Roaring Brook (Lackawanna River)
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Roaring Brook (also known as Roaring Branch Creek or Roaring Creek and historically known as Nay-aug) is a
tributary A tributary, or affluent, is a stream or river that flows into a larger stream or main stem (or parent) river or a lake. A tributary does not flow directly into a sea or ocean. Tributaries and the main stem river drain the surrounding drainage ...
of the
Lackawanna River The Lackawanna River is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map, accessed August 8, 2011 tributary of the Susquehanna River in Northeastern Pennsylvania. It flows through a region of th ...
in
Lackawanna County, Pennsylvania Lackawanna County (; unm, Lèkaohane) is a county in the Commonwealth of Pennsylvania. It is located in Northeastern Pennsylvania and had a population of 215,896 as of the 2020 census. Its county seat and largest city is Scranton. The county ...
, in the United States. It is approximately long and flows through Covington Township, Madison Township,
Moscow Moscow ( , US chiefly ; rus, links=no, Москва, r=Moskva, p=mɐskˈva, a=Москва.ogg) is the capital and largest city of Russia. The city stands on the Moskva River in Central Russia, with a population estimated at 13.0 million ...
, Roaring Brook Township, Elmhurst Township,
Dunmore Dunmore from the ga, Dún Mór, link=no or gd, Dùn Mòr, link=no, meaning "great fort", may refer to: People * Dunmore (surname) * Earl of Dunmore, a title in the Peerage of Scotland, includes a list of earls * Countess of Dunmore (disambiguat ...
, and
Scranton Scranton is a city in the Commonwealth (U.S. state), Commonwealth of Pennsylvania, United States, and the county seat of Lackawanna County, Pennsylvania, Lackawanna County. With a population of 76,328 as of the 2020 United States census, 2020 U ...
. The watershed of the stream has an area of . Its named tributaries include Little Roaring Brook, Rock Bottom Creek, White Oak Run, Van Brunt Creek, Bear Brook, and East Branch Roaring Brook. It has a high level of water quality for much of its length. However, it is affected by abandoned mining land,
stormwater Stormwater, also spelled storm water, is water that originates from precipitation (storm), including heavy rain and meltwater from hail and snow. Stormwater can soak into the soil ( infiltrate) and become groundwater, be stored on depressed la ...
, and other impacts in its lower reaches. Reservoirs in the watershed include the Hollister Reservoir, the Elmhurst Reservoir, and others. The stream also flows through the Nay Aug Gorge and passes over the Nay Aug Falls, which are on the National Register of Geologic Landmarks. It flows through a concrete channel in its lower reaches. The topography of the watershed contains rolling hills in its upper reaches and the mountainous land of the
Moosic Mountains The Moosic Mountains is a mountain range in northeastern Pennsylvania that stretches from Scranton to Mount Pleasant Township, a distance of roughly 32 miles. The high point of the range is in Jefferson Township, at an elevation of above sea ...
in its lower reaches. Land uses in the watershed of Roaring Brook include forested land, agricultural land, and developed land such as high-density residential land and downtown commercial land. Abandoned mine land also occurs in the watershed and wetlands occur in some areas. Major roads in the stream's drainage basin include Interstate 380, Interstate 84, Pennsylvania Route 435, Pennsylvania Route 590, and Pennsylvania Route 690.
Mills Mills is the plural form of mill, but may also refer to: As a name * Mills (surname), a common family name of English or Gaelic origin * Mills (given name) *Mills, a fictional British secret agent in a trilogy by writer Manning O'Brine Places Uni ...
and
forge A forge is a type of hearth used for heating metals, or the workplace (smithy) where such a hearth is located. The forge is used by the smith to heat a piece of metal to a temperature at which it becomes easier to shape by forging, or to th ...
s were built along the stream in the late 1700s and early 1800s. During the 19th century, there was a substantial coal and iron industry in the watershed. Several railroads were also built in the stream's vicinity. Numerous bridges, including the
Harrison Avenue Bridge The Harrison Avenue Bridge was a concrete deck arch bridge carrying Harrison Avenue (unsigned SR 6011) in Scranton, Pennsylvania, United States. History and architectural features Its three spans included an open-spandrel ribbed arch over Roari ...
(which is on the National Register of Historic Places) have been built across the stream as well. Additionally, sites such as the
Scranton Iron Furnaces The Scranton Iron Furnaces is a historic site that preserves the heritage of iron making in the U.S. State of Pennsylvania and is located in Scranton, near the Steamtown National Historic Site. It protects the remains of four stone blast furnac ...
are in its watershed. Roaring Brook is designated as a High-Quality Coldwater Fishery and a Migratory Fishery for part of its length and a Coldwater Fishery and a Migratory Fishery for the other part of its length. It is also
Class A Wild Trout Waters Class A Wild Trout Waters are the highest biomass class given to streams in Pennsylvania by the Pennsylvania Fish and Boat Commission. They are considered to contain the highest-quality naturally reproducing trout populations in Pennsylvania. Th ...
from the Hollister Dam to the Elmhurst Reservoir. Numerous macroinvertebrate taxa have been observed in the stream and boreal forest trees inhabit wetlands in the watershed. A 12-mile (19-kilometer)
rail trail A rail trail is a shared-use path on railway right of way. Rail trails are typically constructed after a railway has been abandoned and the track has been removed, but may also share the right of way with active railways, light rail, or streetcar ...
connecting the Lackawanna River Heritage Trail to the Poconos via the Roaring Brook Corridor has been proposed.


Course

Roaring Brook begins in a small wetland in Covington Township, a few tenths of a mile from the border between Lackawanna County and Wayne County. It flows west for a few tenths of a mile before turning west-northwest for several tenths of a mile. The stream then turns northwest for several tenths of a mile before receiving Lake Run, its first named tributary, from the
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. It then enters the Hollister Reservoir, where it receives the tributary East Branch Roaring Brook from the
right Rights are law, legal, social, or ethics, ethical principles of Liberty, freedom or entitlement; that is, rights are the fundamental normative rules about what is allowed of people or owed to people according to some legal system, social convent ...
. After passing through the reservoir, the stream turns north-northwest. It soon begins flowing along the border between Covington Township and Madison Township and begins to flow alongside
Pennsylvania Route 435 Pennsylvania Route 435 (PA 435) is a state highway located in Monroe, Wayne, and Lackawanna counties in Pennsylvania. The southern terminus is at Interstate 380 (I-380) near Gouldsboro. The northern terminus is at I-84 and I- ...
. The stream enters Moscow and receives the tributary Bear Brook from the right and the tributary Van Brunt Creek from the left. It continues flowing north-northwest and receives the tributary Kellum Creek after several tenths of a mile. Roaring Brook then enters the Elmhurst Reservoir, where it briefly enters Roaring Brook Township before entering Elmhurst Township and receiving the tributary White Oak Run from the right. The stream continues flowing north-northwest, crossing Pennsylvania Route 435 and reentering Roaring Brook Township several tenths of a mile further downstream. It then crosses Interstate 84 and receives the tributary Rock Bottom Creek from the right as its valley becomes much deeper and narrower. It continues flowing north-northwest for more than a mile alongside Pennsylvania Route 435 before turning south-southwest and briefly entering Dunmore before reentering Roaring Brook Township. After several tenths of a mile, the stream turns northwest for a few miles, crossing Interstate 84 and reentering Dunmore. It passes through the Scranton Water Company Reservoir and receives the tributary Little Roaring Brook from the right before turning south and then west. It then turns northwest and crosses
Interstate 81 Interstate 81 (I-81) is a north–south (physically northeast–southwest) Interstate Highway in the eastern part of the United States. Its southern terminus is at I-40 in Dandridge, Tennessee; its northern terminus is on Wellesley Island ...
before turning southwest and passing through the Nay Aug Gorge. The stream turns northwest for several tenths of a mile before turning west-southwest and crossing US Route 11. After a few tenths of a mile, it reaches its confluence with the Lackawanna River. Roaring Brook is approximately long. It joins the Lackawanna River upriver of its mouth.


Tributaries

Roaring Brook has eight named tributaries: Lake Run, East Branch Roaring Brook, Bear Brook, Van Brunt Creek, Kellum Creek, White Oak Run, Rock Bottom Creek, and Little Roaring Brook. Lake Run joins Roaring Brook upstream of its mouth and its watershed has an area of . East Branch Roaring Brook joins Roaring Brook upstream of its mouth and its watershed has an area of . Bear Brook joins Roaring Brook upstream of its mouth and its watershed has an area of . White Oak Run joins Roaring Brook upstream of its mouth and its watershed has an area of . Rock Bottom Creek joins Roaring Brook upstream of its mouth and its watershed has an area of . Little Roaring Brook joins Roaring Brook upstream of its mouth and its watershed has an area of .


Hydrology

Roaring Brook has a high level of
water quality Water quality refers to the chemical, physical, and biological characteristics of water based on the standards of its usage. It is most frequently used by reference to a set of standards against which compliance, generally achieved through tr ...
downstream as far as Cobbs Gap. However, in its lower reaches, it is impacted by urban storm impacts and abandoned mining land.
Silt Silt is granular material of a size between sand and clay and composed mostly of broken grains of quartz. Silt may occur as a soil (often mixed with sand or clay) or as sediment mixed in suspension with water. Silt usually has a floury feel when ...
from the DeNaples Auto Parts property washed into the stream in 1991. There are also
stormwater Stormwater, also spelled storm water, is water that originates from precipitation (storm), including heavy rain and meltwater from hail and snow. Stormwater can soak into the soil ( infiltrate) and become groundwater, be stored on depressed la ...
impacts and
combined sewer overflow A combined sewer is a type of gravity sewer with a system of pipes, tunnels, pump stations etc. to transport sewage and urban runoff together to a sewage treatment plant or disposal site. This means that during rain events, the sewage gets dilute ...
s in its lower reaches. Most of the stormwater flowing into the stream is associated with a combined sewer system in Scranton and Dunmore. Some highways in the watershed contribute stormwater as well. It is also affected by stormwater from the Daleville Shopping area, the village of Elmhurst, the borough of Moscow,
Pennsylvania Route 435 Pennsylvania Route 435 (PA 435) is a state highway located in Monroe, Wayne, and Lackawanna counties in Pennsylvania. The southern terminus is at Interstate 380 (I-380) near Gouldsboro. The northern terminus is at I-84 and I- ...
, Pennsylvania Route 590, and
Pennsylvania Route 690 Pennsylvania Route 690 (PA 690) is a state highway located in Lackawanna County, Pennsylvania, Lackawanna and Wayne County, Pennsylvania, Wayne counties in Pennsylvania. The western terminus is at Pennsylvania Route 502, PA 502 i ...
. There are 12 stormwater detention facilities in the watershed's lower reaches. The concentration of
alkalinity Alkalinity (from ar, القلوي, al-qaly, lit=ashes of the saltwort) is the capacity of water to resist acidification. It should not be confused with basicity, which is an absolute measurement on the pH scale. Alkalinity is the strength of ...
in Roaring Brook between its headwaters and the Hollister Dam is 12 milligrams per liter. From the Hollister Dam to the Elmhurst Reservoir, the alkalinity concentration is 15 milligrams per liter. In the early 1900s, the stream was polluted by waste from coal mines upstream of its mouth. The stream experiences measurable flow loss, reaching up to 20 to 30 percent of its total flow in dry weather. In the 1970s, its
turbidity Turbidity is the cloudiness or haziness of a fluid caused by large numbers of individual particles that are generally invisible to the naked eye, similar to smoke in air. The measurement of turbidity is a key test of water quality. Fluids can ...
ranged from 1 to 35 Jackson Turbidity Units at Scranton. In the 1960s and 1970s, several measurements of the concentration of
manganese Manganese is a chemical element with the symbol Mn and atomic number 25. It is a hard, brittle, silvery metal, often found in minerals in combination with iron. Manganese is a transition metal with a multifaceted array of industrial alloy use ...
in Roaring Brook at Scranton ranged from 0.7 to 21 milligrams per liter and measurements of the
calcium Calcium is a chemical element with the symbol Ca and atomic number 20. As an alkaline earth metal, calcium is a reactive metal that forms a dark oxide-nitride layer when exposed to air. Its physical and chemical properties are most similar to ...
concentration ranged from 0.8 to 31.2 milligrams per liter. The concentration of
sodium Sodium is a chemical element with the symbol Na (from Latin ''natrium'') and atomic number 11. It is a soft, silvery-white, highly reactive metal. Sodium is an alkali metal, being in group 1 of the periodic table. Its only stable iso ...
ranged from 6 to 20 milligrams per liter in two measurements and the
potassium Potassium is the chemical element with the symbol K (from Neo-Latin ''kalium'') and atomic number19. Potassium is a silvery-white metal that is soft enough to be cut with a knife with little force. Potassium metal reacts rapidly with atmosphe ...
concentration ranged from 1 to 3.5 milligrams per liter. Two measurements of the concentration of recoverable
chromium Chromium is a chemical element with the symbol Cr and atomic number 24. It is the first element in group 6. It is a steely-grey, lustrous, hard, and brittle transition metal. Chromium metal is valued for its high corrosion resistance and hardne ...
ranged from less than 20 to 30 micrograms per liter. The concentration of recoverable
copper Copper is a chemical element with the symbol Cu (from la, cuprum) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkis ...
(in unfiltered water only) ranged from 30 to 200 micrograms per liter. The concentration of recoverable
iron Iron () is a chemical element with symbol Fe (from la, ferrum) and atomic number 26. It is a metal that belongs to the first transition series and group 8 of the periodic table. It is, by mass, the most common element on Earth, right in f ...
(in unfiltered water only) ranged from 0 to 444,000 micrograms per liter. The concentration of recoverable
lead Lead is a chemical element with the symbol Pb (from the Latin ) and atomic number 82. It is a heavy metal that is denser than most common materials. Lead is soft and malleable, and also has a relatively low melting point. When freshly cu ...
in the stream's unfiltered waters was found twice to be 50 micrograms per liter. The concentration of recoverable
manganese Manganese is a chemical element with the symbol Mn and atomic number 25. It is a hard, brittle, silvery metal, often found in minerals in combination with iron. Manganese is a transition metal with a multifaceted array of industrial alloy use ...
in the stream's unfiltered waters ranged from 20 to 1600 micrograms per liter. The concentration of recoverable
zinc Zinc is a chemical element with the symbol Zn and atomic number 30. Zinc is a slightly brittle metal at room temperature and has a shiny-greyish appearance when oxidation is removed. It is the first element in group 12 (IIB) of the periodi ...
in the stream's unfiltered waters ranged from 160 to 380 micrograms per liter. Trace amounts of
nickel Nickel is a chemical element with symbol Ni and atomic number 28. It is a silvery-white lustrous metal with a slight golden tinge. Nickel is a hard and ductile transition metal. Pure nickel is chemically reactive but large pieces are slow to ...
and
silver Silver is a chemical element with the Symbol (chemistry), symbol Ag (from the Latin ', derived from the Proto-Indo-European wikt:Reconstruction:Proto-Indo-European/h₂erǵ-, ''h₂erǵ'': "shiny" or "white") and atomic number 47. A soft, whi ...
have been found in the stream. The concentration of recoverable
zinc Zinc is a chemical element with the symbol Zn and atomic number 30. Zinc is a slightly brittle metal at room temperature and has a shiny-greyish appearance when oxidation is removed. It is the first element in group 12 (IIB) of the periodi ...
in the stream's unfiltered waters ranged between 100 and 70,000 micrograms per liter. The concentration of recoverable
mercury Mercury commonly refers to: * Mercury (planet), the nearest planet to the Sun * Mercury (element), a metallic chemical element with the symbol Hg * Mercury (mythology), a Roman god Mercury or The Mercury may also refer to: Companies * Merc ...
in the stream (with unfiltered water) was once found to be less than 0.5 micrograms per liter. In the 1960s and 1970s, several measurements of the concentration of
dissolved oxygen Oxygen saturation (symbol SO2) is a relative measure of the concentration of oxygen that is dissolved or carried in a given medium as a proportion of the maximal concentration that can be dissolved in that medium at the given temperature. It ca ...
in Roaring Brook at Scranton ranged from 10.0 to 12.6 milligrams per liter. The concentration of
hydrogen ion A hydrogen ion is created when a hydrogen atom loses or gains an electron. A positively charged hydrogen ion (or proton) can readily combine with other particles and therefore is only seen isolated when it is in a gaseous state or a nearly particle ...
s in the stream had values ranging from 0.00004 to 0.04022 milligrams per liter. The
carbon dioxide Carbon dioxide (chemical formula ) is a chemical compound made up of molecules that each have one carbon atom covalently double bonded to two oxygen atoms. It is found in the gas state at room temperature. In the air, carbon dioxide is transpar ...
concentration was found to range from 0.3 to 252 milligrams per liter. Between 1928 and 1968, the
bicarbonate In inorganic chemistry, bicarbonate (IUPAC-recommended nomenclature: hydrogencarbonate) is an intermediate form in the deprotonation of carbonic acid. It is a polyatomic anion with the chemical formula . Bicarbonate serves a crucial biochemic ...
concentration ranged from 22 to 141 milligrams per liter during three measurements. Between 1928 and the 1970s, the concentration of
ammonia Ammonia is an inorganic compound of nitrogen and hydrogen with the formula . A stable binary hydride, and the simplest pnictogen hydride, ammonia is a colourless gas with a distinct pungent smell. Biologically, it is a common nitrogenous was ...
was found to range from 0 to 43.1 milligrams per liter and the
nitrate Nitrate is a polyatomic ion A polyatomic ion, also known as a molecular ion, is a covalent bonded set of two or more atoms, or of a metal complex, that can be considered to behave as a single unit and that has a net charge that is not zer ...
concentration ranged from 0.1 to 18 milligrams per liter in three measurements in 1928 and 1968. The
phosphorus Phosphorus is a chemical element with the symbol P and atomic number 15. Elemental phosphorus exists in two major forms, white phosphorus and red phosphorus, but because it is highly reactive, phosphorus is never found as a free element on Ear ...
concentration ranged from 0.040 to 13.6 milligrams per liter in the 1970s and the
phosphate In chemistry, a phosphate is an anion, salt, functional group or ester derived from a phosphoric acid. It most commonly means orthophosphate, a derivative of orthophosphoric acid . The phosphate or orthophosphate ion is derived from phospho ...
concentration ranged between 0 and 0.644 milligrams per liter. The concentration of
fluoride Fluoride (). According to this source, is a possible pronunciation in British English. is an inorganic, monatomic anion of fluorine, with the chemical formula (also written ), whose salts are typically white or colorless. Fluoride salts typ ...
in Roaring Brook at Scranton was once measured to be 0.2 milligrams per liter (in unfiltered water only). The
chloride The chloride ion is the anion (negatively charged ion) Cl−. It is formed when the element chlorine (a halogen) gains an electron or when a compound such as hydrogen chloride is dissolved in water or other polar solvents. Chloride salts ...
concentration ranged from 2 to 214 milligrams per liter during several measurements in the 20th century. The
sulfate The sulfate or sulphate ion is a polyatomic anion with the empirical formula . Salts, acid derivatives, and peroxides of sulfate are widely used in industry. Sulfates occur widely in everyday life. Sulfates are salts of sulfuric acid and many ar ...
concentration ranged from 8 to 4700 milligrams per liter. During two measurements, the
silica Silicon dioxide, also known as silica, is an oxide of silicon with the chemical formula , most commonly found in nature as quartz and in various living organisms. In many parts of the world, silica is the major constituent of sand. Silica is one ...
concentration ranged from 5.20 to 8.30 milligrams per liter. In two measurements in 1968, the
specific conductance Electrical resistivity (also called specific electrical resistance or volume resistivity) is a fundamental property of a material that measures how strongly it resists electric current. A low resistivity indicates a material that readily allow ...
of Roaring Brook at Scranton ranged from 199 to 288 micro-siemens per centimeter at . The pH was measured to range from 4.4 to 8.8 and the
acidity In computer science, ACID ( atomicity, consistency, isolation, durability) is a set of properties of database transactions intended to guarantee data validity despite errors, power failures, and other mishaps. In the context of databases, a sequ ...
concentration ranged from 0 to 260 milligrams per liter in the 1960s and 1970s. The concentration of
suspended solids Suspended solids refers to small solid particles which remain in suspension in water as a colloid or due to motion of the water. Suspended solids can be removed by sedimentation if their size or density is comparatively large, or by filtration. It ...
ranged from 0 to 250 milligrams per liter and the concentration of settleable solids ranged between 0 and 4 milligrams per liter. The concentration of
water hardness Hard water is water that has high mineral content (in contrast with "soft water"). Hard water is formed when water percolates through deposits of limestone, chalk or gypsum, which are largely made up of calcium and magnesium carbonates, bicarbo ...
ranged from 12 to 160 milligrams per liter. The peak annual discharge at the mouth of Roaring Brook has a 10 percent chance of reaching 5260 cubic feet per second. It has a 2 percent chance of reaching 10,500 cubic feet per second and a 1 percent chance of reaching 13,800 cubic feet per second. The peak annual discharge has a 0.2 percent chance of reaching 26,000 cubic feet per second. Upstream of the tributary Little Roaring Brook, the peak annual discharge of Roaring Brook has a 10 percent chance of reaching 4520 cubic feet per second. It has a 2 percent chance of reaching 9100 cubic feet per second and a 1 percent chance of reaching 12,000 cubic feet per second. The peak annual discharge has a 0.2 percent chance of reaching 23,000 cubic feet per second.


Geography, geology, and climate

The elevation near the
mouth In animal anatomy, the mouth, also known as the oral cavity, or in Latin cavum oris, is the opening through which many animals take in food and issue vocal sounds. It is also the cavity lying at the upper end of the alimentary canal, bounded on ...
of Roaring Brook is above
sea level Mean sea level (MSL, often shortened to sea level) is an average surface level of one or more among Earth's coastal bodies of water from which heights such as elevation may be measured. The global MSL is a type of vertical datuma standardised g ...
. The elevation of the stream's
source Source may refer to: Research * Historical document * Historical source * Source (intelligence) or sub source, typically a confidential provider of non open-source intelligence * Source (journalism), a person, publication, publishing institute o ...
is between above sea level. In its lower , the stream's gradient is per mile. Horace Hollister's 1885 ''History of the Lackawanna Valley'' noted that the stream was shallow at that time. According to Hollister, the stream appears to have been much larger in ancient times. His book also described Roaring Brook as being "the noisiest tributary of the Lackawanna". Roaring Brook begins on the
Pocono Plateau Pocono may refer to: Places * Pocono Mountains, a mountainous region in northeastern Pennsylvania * Pocono Creek, a tributary of Brodhead Creek in the Poconos * Pocono Biological Laboratories, a company related to Sanofi pasteur * Pocono Raceway, ...
. It flows through a
water gap A water gap is a gap that flowing water has carved through a mountain range or mountain ridge and that still carries water today. Such gaps that no longer carry water currents are called wind gaps. Water gaps and wind gaps often offer a prac ...
known as Cobbs Gap in the
Moosic Mountains The Moosic Mountains is a mountain range in northeastern Pennsylvania that stretches from Scranton to Mount Pleasant Township, a distance of roughly 32 miles. The high point of the range is in Jefferson Township, at an elevation of above sea ...
and there are numerous waterfalls and rapids along it. A
waterfall A waterfall is a point in a river or stream where water flows over a vertical drop or a series of steep drops. Waterfalls also occur where meltwater drops over the edge of a tabular iceberg or ice shelf. Waterfalls can be formed in several wa ...
known as the Nay Aug Falls is on Roaring Brook and the stream flows through the a gorge or canyon Nay Aug Gorge, which is listed on the National Register of Geologic Landmarks. The waterfall is a cascade with a height of and cuts through a soft
siltstone Siltstone, also known as aleurolite, is a clastic sedimentary rock that is composed mostly of silt. It is a form of mudrock with a low clay mineral content, which can be distinguished from shale by its lack of fissility.Blatt ''et al.'' 1980, p ...
formation and flows over conglomerate. A
spring Spring(s) may refer to: Common uses * Spring (season) Spring, also known as springtime, is one of the four temperate seasons, succeeding winter and preceding summer. There are various technical definitions of spring, but local usage of ...
known as Chico's Spring is in the stream's watershed in Dunmore, as is a feature known as Barneys Ledge. The Madisonville Cliffs and Glen are located in the watershed in Madison Township and Covington Township. Additionally, numerous
pond A pond is an area filled with water, either natural or artificial, that is smaller than a lake. Defining them to be less than in area, less than deep, and with less than 30% emergent vegetation helps in distinguishing their ecology from th ...
s,
reservoir A reservoir (; from French ''réservoir'' ) is an enlarged lake behind a dam. Such a dam may be either artificial, built to store fresh water or it may be a natural formation. Reservoirs can be created in a number of ways, including contro ...
s, and water works are in the watershed. The upper reaches of the watershed of Roaring Brook contain rolling hills. However, the lower reaches are mountainous, with steep, high hills and a narrow valley from Elmhurst downstream to Dunmore. The stream's
channel Channel, channels, channeling, etc., may refer to: Geography * Channel (geography), in physical geography, a landform consisting of the outline (banks) of the path of a narrow body of water. Australia * Channel Country, region of outback Austral ...
is
sinuous Sinuosity, sinuosity index, or sinuosity coefficient of a continuously differentiable curve having at least one inflection point is the ratio of the curvilinear length (along the curve) and the Euclidean distance (straight line) between the ...
, but has retaining walls in its lower reaches. The stream flows past
rock formation A rock formation is an isolated, scenic, or spectacular surface rock outcrop. Rock formations are usually the result of weathering and erosion sculpting the existing rock. The term ''rock formation'' can also refer to specific sediment ...
s consisting of
sandstone Sandstone is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) silicate grains. Sandstones comprise about 20–25% of all sedimentary rocks. Most sandstone is composed of quartz or feldspar (both silicates) ...
,
shale Shale is a fine-grained, clastic sedimentary rock formed from mud that is a mix of flakes of clay minerals (hydrous aluminium phyllosilicates, e.g. kaolin, Al2 Si2 O5( OH)4) and tiny fragments (silt-sized particles) of other minerals, especial ...
, and conglomerate, along with some
coal Coal is a combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams. Coal is mostly carbon with variable amounts of other elements, chiefly hydrogen, sulfur, oxygen, and nitrogen. Coal is formed when dea ...
. However, all of its tributaries begin outside of the coal measures. In the Nay Aug Gorge, the stream flows through conglomerate of the
Pocono Formation The Mississippian Pocono Formation is a mapped bedrock unit in Pennsylvania, Maryland, and West Virginia, in the United States. It is also known as the Pocono Group in Maryland and West Virginia, and the upper part of the Pocono Formation is somet ...
and sandstone of the Llwellyn Formation. A hard white conglomerate known as the Pottsville or Pocono Conglomerate occurs along the stream near the Nay Aug Falls. Erosion by the stream in the Nay Aug Gorge has caused some areas to be undercut. There are also cliffs in the gorge, some over high. Roaring Brook flows through a concrete U-channel from Cedar Avenue to its mouth. Both the manmade and the natural parts of the channel have steep banks, with heights on the order of . An abandoned
water power Hydropower (from el, ὕδωρ, "water"), also known as water power, is the use of falling or fast-running water to produce electricity or to power machines. This is achieved by converting the gravitational potential or kinetic energy of a wa ...
dam known as Step Falls is located on the stream in the Nay Aug Gorge. Much of the stream's channel and
riparian area A riparian zone or riparian area is the interface between land and a river or stream. Riparian is also the proper nomenclature for one of the terrestrial biomes of the Earth. Plant habitats and communities along the river margins and banks ar ...
have been developed for
flood control Flood control methods are used to reduce or prevent the detrimental effects of flood waters."Flood Control", MSN Encarta, 2008 (see below: Further reading). Flood relief methods are used to reduce the effects of flood waters or high water level ...
purposes. The stream is
dam A dam is a barrier that stops or restricts the flow of surface water or underground streams. Reservoirs created by dams not only suppress floods but also provide water for activities such as irrigation, human consumption, industrial use ...
med by the Elmhurst Dam, which is in good condition as of May 1978. Upstream of Nay Aug, the channel of Roaring Brook is mainly natural and ranges in width from . It flows past some steep slopes and rock ledges in this reach. In its lower reaches, the stream flows through 30
pipes Pipe(s), PIPE(S) or piping may refer to: Objects * Pipe (fluid conveyance), a hollow cylinder following certain dimension rules ** Piping, the use of pipes in industry * Smoking pipe ** Tobacco pipe * Half-pipe and quarter pipe, semi-circula ...
with diameters ranging from . A wide gravel and sand bar and some dumped trash occurs along the stream. The average annual rate of precipitation in the watershed of Roaring Brook ranges from . In the 1960s and 1970s, several measurements of the water temperature of the stream ranged from . The temperature near the stream during several measurements in May 2013 ranged from .


Watershed

The watershed of Roaring Brook has an area of . It is in the Lower North Branch Susquehanna drainage basin. The watershed mainly occupies the southeastern part of Lackawanna County. However, a small area of its watershed is in Sterling Township, in Wayne County. Upstream of the tributary Little Roaring Brook, the watershed has an area of . The mouth of the stream is in the
United States Geological Survey The United States Geological Survey (USGS), formerly simply known as the Geological Survey, is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, ...
quadrangle of Scranton. However, its source is in the quadrangle of Sterling. The stream also passes through the quadrangles of Olyphant and Moscow. Roaring Brook is the largest tributary of the Lackawanna River.The watershed of Spring Brook is slightly larger, but Roaring Brook is a few miles longer. It is a third-order stream. Its headwaters are situated immediately to the west of the watershed of the
Lehigh River The Lehigh River is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map, accessed April 1, 2011 tributary of the Delaware River in eastern Pennsylvania. The river flows in a generally southward pat ...
.
Forest A forest is an area of land dominated by trees. Hundreds of definitions of forest are used throughout the world, incorporating factors such as tree density, tree height, land use, legal standing, and ecological function. The United Nations' ...
ed land comprises 70 percent of the watershed's upper reaches. 20 percent is
agricultural Agriculture or farming is the practice of cultivating Plant, plants and livestock. Agriculture was the key development in the rise of Sedentism, sedentary human civilization, whereby farming of Domestication, domesticated species created food ...
land and 10 percent is developed. Some abandoned mine land occurs in the watershed as well. Other land uses include high-density residential land and downtown commercial land. Major roads in the watershed include Interstate 380, Interstate 84, Pennsylvania Route 435, Pennsylvania Route 590, and Pennsylvania Route 690. South Washington Avenue is located near the stream's mouth. The
University of Scranton The University of Scranton is a private Jesuit university in Scranton, Pennsylvania. It was founded in 1888 by William O'Hara, the first Bishop of Scranton, as St. Thomas College. In 1938, the college was elevated to university status and took t ...
is located near the stream.
Wetland A wetland is a distinct ecosystem that is flooded or saturated by water, either permanently (for years or decades) or seasonally (for weeks or months). Flooding results in oxygen-free (anoxic) processes prevailing, especially in the soils. The ...
s in the watershed of Roaring Brook include the Freytown and Hollister swamps, which are located near the stream's headwaters. Between its headwaters and the Hollister Dam, the entire length of Roaring Brook is on private land. From the Hollister Dam to the Elmhurst Reservoir, 86 percent of its length is on private land. The remaining 14 percent is on private land that is open to access. Roaring Brook is one of the sources of
flooding A flood is an overflow of water ( or rarely other fluids) that submerges land that is usually dry. In the sense of "flowing water", the word may also be applied to the inflow of the tide. Floods are an area of study of the discipline hydrolog ...
in Dunmore and Elmhurst Township.


History

Roaring Brook was entered into the
Geographic Names Information System The Geographic Names Information System (GNIS) is a database of name and locative information about more than two million physical and cultural features throughout the United States and its territories, Antarctica, and the associated states of ...
on August 2, 1979. Its identifier in the Geographic Names Information System is 1199947. The stream is also known as Roaring Creek or Roaring Branch Creek. The former variant name appears in United States Geological Survey topographical maps while the latter appears in Israel C. White's 1881 book ''The geology of Susquehanna County and Wayne County, Pennsylvania''. The stream was historically known as ''Nay-aug''. Nay-aug is a name derived from a Native American language meaning "roaring". The ancient Native American village of Capoose used to be within a mile of the mouth of Roaring Brook. An Indian war path used to cross the stream near what is now Scranton. The Slocum family constructed a
gristmill A gristmill (also: grist mill, corn mill, flour mill, feed mill or feedmill) grinds cereal grain into flour and Wheat middlings, middlings. The term can refer to either the Mill (grinding), grinding mechanism or the building that holds it. Grist i ...
on the stream in 1780 and Philip Abbott constructed a gristmill on the stream in 1788. Ebenezer Slocum and Benjamin Slocum built a forge along the stream in 1799 or 1800.
Rolling mill In metalworking, rolling is a metal forming process in which metal stock is passed through one or more pairs of rolls to reduce the thickness, to make the thickness uniform, and/or to impart a desired mechanical property. The concept is simil ...
s also operated along it in the 19th century. The first bridge in Madison Township was constructed over the stream in 1830 by Nathaniel Carter. A Mr. Rupert constructed the first
sawmill A sawmill (saw mill, saw-mill) or lumber mill is a facility where logs are cut into lumber. Modern sawmills use a motorized saw to cut logs lengthwise to make long pieces, and crosswise to length depending on standard or custom sizes (dimensi ...
in Moscow on Roaring Brook in 1831. An iron works industry known as the Slocum Brothers Mill was constructed on Roaring Brook upstream of its mouth in 1838. It struggled at first, but by 1846 managed to get a contract to produce iron T rails for the
New York and Lake Erie Railroad The New York & Lake Erie is a class III railroad operating in Western New York. The NYLE was formed in 1978 to operate a portion of former Erie trackage that Conrail no longer wanted. Today, the railroad operates between Gowanda to Conewango ...
. The furnaces of the Lackawanna Coal and Iron Company once stood near the stream. A sawmill was constructed over the stream in Covington Township in 1840 and the first gristmill in that township was built on Roaring Brook in the northeastern part of that township in 1864. The first bridge over the stream was built in 1859. In 1870, the Scranton family constructed a mansion on the stream. In the early 1900s, the main industries in the watershed of Roaring Brook included
agriculture Agriculture or farming is the practice of cultivating plants and livestock. Agriculture was the key development in the rise of sedentary human civilization, whereby farming of domesticated species created food surpluses that enabled people to ...
,
brick A brick is a type of block used to build walls, pavements and other elements in masonry construction. Properly, the term ''brick'' denotes a block composed of dried clay, but is now also used informally to denote other chemically cured cons ...
making, and
coal mining Coal mining is the process of extracting coal from the ground. Coal is valued for its energy content and since the 1880s has been widely used to generate electricity. Steel and cement industries use coal as a fuel for extraction of iron from ...
. Around this time, the
Delaware, Lackawanna and Western Railroad The Delaware, Lackawanna and Western Railroad (also known as the DL&W or Lackawanna Railroad) was a U.S. Class 1 railroad that connected Buffalo, New York, and Hoboken, New Jersey (and by ferry with New York City), a distance of . Incorporated in ...
followed the stream throughout much of its length and the
Erie Railroad The Erie Railroad was a railroad that operated in the northeastern United States, originally connecting New York City — more specifically Jersey City, New Jersey, where Erie's Pavonia Terminal, long demolished, used to stand — with Lake Erie ...
followed the stream from Elmhurst to its mouth. The former was created by an 1852 merger of the Cobbs Gap and Delaware Railroad and the Lackawanna and Western Railroad, which were previously in the stream's watershed. The
main stem In hydrology, a mainstem (or trunk) is "the primary downstream segment of a river, as contrasted to its tributaries". Water enters the mainstem from the river's drainage basin, the land area through which the mainstem and its tributaries flow.. A ...
was used as a
water supply Water supply is the provision of water by public utilities, commercial organisations, community endeavors or by individuals, usually via a system of pumps and pipes. Public water supply systems are crucial to properly functioning societies. Thes ...
for Scranton by the Scranton Gas and Water Company. It was also used as an industrial water supply by the Spencer Coal Company. The watershed continues to supply water to the Lackawanna Valley in the 21st century. In the early 1900s, major communities in the watershed included Scranton, Dunmore, Moscow, and Elmhurst. At the time, their populations were 129,867, 17,615, 650, and 379, respectively. A steel truss bridge with a length of was constructed over Roaring Brook in 1907 and is closed. A concrete arch bridge with a length of was built over the stream in 1917 and another bridge of the same type, but with a length of , was constructed in 1935. A steel girder and floorbeam system bridge with a length of was also constructed over the stream in that year and was repaired in 2006. A concrete culvert bridge with a length of was built across the stream in 1948 and three prestressed box beam or girders bridges carrying Ash Street, State Route 2005/Market Street, and State Route 3023/Cedar Ave were built in 1958. Another bridge of that type, with a length of , was built over the creek in 1961. A bridge carrying US Route 11 over the creek was built in 1969, as was a prestressed box beam or girders bridge. Their lengths are and , respectively. A seven-span bridge carrying Interstate 84 over Roaring Brook was constructed in 1974. In 1979, a two-span prestressed box beam or girders bridge with a length of was constructed across the stream. I 1996 two ten-span bridges carrying Interstate 81 over the stream were built in Dunmore. The last major flood in Dunmore occurred during
Hurricane Diane Hurricane Diane was the first Atlantic hurricane to cause more than an estimated $1 billion in damage (in 1955 dollars, which would be $ today), including direct costs and the loss of business and personal revenue. It formed on August  ...
in 1955. In this flood, floodwaters from Roaring Brook and another nearby stream damaged large areas in the lower-lying parts of Dunmore. The Pennsylvania Gas and Water Company's distribution system was severely damaged by the flood and a railroad car repair facility in the borough was so badly damaged that it was permanently abandoned. In 1960, the
United States Army Corps of Engineers , colors = , anniversaries = 16 June (Organization Day) , battles = , battles_label = Wars , website = , commander1 = ...
channelized of Roaring Brook. The stream is on the
Pennsylvania Department of Environmental Protection The Pennsylvania Department of Environmental Protection (DEP) is the agency in the U.S. state of Pennsylvania responsible for protecting and preserving the land, air, water, and public health through enforcement of the state's environmental laws. ...
Bureau of Abandoned Mine Restoration's priority list for restoration. The stream is described in the Lackawanna River Watershed Conservation Plan as being "significant natural and cultural resources". The stream has been studied several times. It was studied for the
Pennsylvania Fish and Boat Commission The Pennsylvania Fish and Boat Commission is an independent state agency responsible for the regulation of all fishing and boating in the state of Pennsylvania within the United States of America. Unlike many U.S. states, Pennsylvania has a separ ...
by Daniels in 1979, Copeland in 1990, and Moase in 1996. In 1985, Rider and Blacksmith studied the stream for the Pennsylvania Department of Environmental Protection. In the early 2000s, Popps and McGurl studied the stream for the Lackawanna River Corridor Association. Large tracts of land in the watershed were once owned by the Pennsylvania Gas and Water Company, but later came to be owned by the Theta Corporation. There are numerous historic sites in the watershed of Roaring Brook. These include the
Scranton Iron Furnaces The Scranton Iron Furnaces is a historic site that preserves the heritage of iron making in the U.S. State of Pennsylvania and is located in Scranton, near the Steamtown National Historic Site. It protects the remains of four stone blast furnac ...
(a state historic site) in Scranton, the Erie Arch in Dunmore, a Pennsylvania Coal Company building in Dunmore, the Pennsylvania Gravity Railroad in Dunmore and other locations, and the Mill Street Tubs and the Nay Aug tubs in Dunmore. Additionally, the
Harrison Avenue Bridge The Harrison Avenue Bridge was a concrete deck arch bridge carrying Harrison Avenue (unsigned SR 6011) in Scranton, Pennsylvania, United States. History and architectural features Its three spans included an open-spandrel ribbed arch over Roari ...
, which crosses Roaring Brook in Scranton, is on the
National Register of Historic Places The National Register of Historic Places (NRHP) is the United States federal government's official list of districts, sites, buildings, structures and objects deemed worthy of preservation for their historical significance or "great artistic v ...
and the
Historic American Buildings Survey Heritage Documentation Programs (HDP) is a division of the U.S. National Park Service (NPS) responsible for administering the Historic American Buildings Survey (HABS), Historic American Engineering Record (HAER), and Historic American Landscapes ...
. The bridge is "a symbol of the city's cranton'sprogressive era in the early 20th century".


Biology

Wild
trout Trout are species of freshwater fish belonging to the genera '' Oncorhynchus'', ''Salmo'' and ''Salvelinus'', all of the subfamily Salmoninae of the family Salmonidae. The word ''trout'' is also used as part of the name of some non-salmoni ...
naturally reproduce in Roaring Brook from its headwaters downstream to its mouth. The stream's drainage basin is designated as a High-Quality Coldwater Fishery and a Migratory Fishery from its headwaters downstream to the Elmhurst Reservoir. From the Elmhurst Reservoir downstream to its mouth, it is a Coldwater Fishery and a Migratory Fishery. The stream is also considered by the
Pennsylvania Fish and Boat Commission The Pennsylvania Fish and Boat Commission is an independent state agency responsible for the regulation of all fishing and boating in the state of Pennsylvania within the United States of America. Unlike many U.S. states, Pennsylvania has a separ ...
to be Class A Wild Trout Waters for both
brook trout The brook trout (''Salvelinus fontinalis'') is a species of freshwater fish in the char genus ''Salvelinus'' of the salmon family Salmonidae. It is native to Eastern North America in the United States and Canada, but has been introduced elsewhere ...
and
brown trout The brown trout (''Salmo trutta'') is a European species of salmonid fish that has been widely introduced into suitable environments globally. It includes purely freshwater populations, referred to as the riverine ecotype, ''Salmo trutta'' morph ...
from its headwaters to the Hollister Dam, a distance of . From the Hollister Dam to the Elmhurst Reservoir (a distance of ), it is Class A Wild Trout Waters for brook trout. The tributary Lake Run is also Class A Wild Trout Waters for brook trout and brown trout and the tributary Kellum Creek is Class A Wild Trout Waters for brook trout. Upstream of the Hollister Reservoir, Roaring Brook meets the criteria for an Exceptional Value designation.
Wolves The wolf (''Canis lupus''; plural, : wolves), also known as the gray wolf or grey wolf, is a large Canis, canine native to Eurasia and North America. More than thirty subspecies of Canis lupus, subspecies of ''Canis lupus'' have been reco ...
,
bear Bears are carnivoran mammals of the family Ursidae. They are classified as caniforms, or doglike carnivorans. Although only eight species of bears are extant, they are widespread, appearing in a wide variety of habitats throughout the Nor ...
s,
wildcat The wildcat is a species complex comprising two small wild cat species: the European wildcat (''Felis silvestris'') and the African wildcat (''F. lybica''). The European wildcat inhabits forests in Europe, Anatolia and the Caucasus, while the ...
s, and
panther Panther may refer to: Large cats *Pantherinae, the cat subfamily that contains the genera ''Panthera'' and ''Neofelis'' **'' Panthera'', the cat genus that contains tigers, lions, jaguars and leopards. *** Jaguar (''Panthera onca''), found in So ...
s historically inhabited the area in the vicinity of Roaring Brook. Numerous
macroinvertebrate Invertebrates are a paraphyletic group of animals that neither possess nor develop a vertebral column (commonly known as a ''backbone'' or ''spine''), derived from the notochord. This is a grouping including all animals apart from the chordate s ...
taxa have been observed in Roaring Brook upstream of the Hollister Reservoir, including 16 genera from the orders Ephemeroptera,
Plecoptera Plecoptera is an order of insects, commonly known as stoneflies. Some 3,500 species are described worldwide, with new species still being discovered. Stoneflies are found worldwide, except Antarctica. Stoneflies are believed to be one of the mo ...
, and
Trichoptera The caddisflies, or order Trichoptera, are a group of insects with aquatic larvae and terrestrial adults. There are approximately 14,500 described species, most of which can be divided into the suborders Integripalpia and Annulipalpia on the b ...
. In a 212-individual sample, 2 individuals from the family ''
Baetidae Baetidae is a family of mayfly, mayflies with about 1000 described species in 110 genera distributed worldwide. These are among the smallest of mayflies, adults rarely exceeding 10 mm in length excluding the two long slender tails and someti ...
'', 25 individuals from the family ''
Ephemerellidae Ephemerellidae are known as the spiny crawler mayflies. They are a family of the order Ephemeroptera. There are eight genera consisting of a total 90 species (Merritt & Cummins). They are distributed throughout North America as well as the UK. T ...
'', 35 from the family ''
Heptageniidae The Heptageniidae (synonym: Ecdyonuridae) are a family of mayflies with over 500 described species mainly distributed in the Holarctic, Oriental, and Afrotropical regions, and also present in the Central American Tropics and extreme northern Sou ...
'', 2 from the family ''
Leptophlebiidae Leptophlebiidae is a family belonging to the Ephemeropterans that are commonly known as the prong-gilled mayflies or leptophlebiids. It is the only family in the superfamily Leptophlebioidea. There are around 131 genera and 640 described specie ...
'', 1 from the family '' Leuctridae'', and 11 from the family ''
Perlidae The Perlidae are a family of stoneflies, with more than 50 genera and 1,100 described species. The majority of the Perlidae are found in eastern North America, but they occur worldwide except for Antarctica and parts of Africa. Their lifecycle ...
'' were observed. Additionally, the sample included 5 individuals from the family ''
Glossosomatidae The Glossosomatidae are a family of the class Insecta and order Trichoptera.The family contains 23 genera in three subfamilies. In the US alone, there are 76 spp. in 6 different genera.Merritt, RW, Cummins, KW, Berg MB. (2008). An Introduction to ...
'', 61 from the family ''
Hydropsychidae The Hydropsychidae are a family-level taxon consisting of net-spinning caddisflies. Hydropsychids are common among much of the world's streams, and a few species occupy the shorelines of freshwater lakes. Larvae of the hydropsychids construct ...
'', 5 from the family ''
Philopotamidae Philopotamidae is a family of insects in the order Trichoptera, the caddisflies. They are known commonly as the finger-net caddisflies.Polycentropodidae'', 4 from the family ''
Rhyacophilidae The Rhyacophilidae are a family in the insect order of Trichoptera The caddisflies, or order Trichoptera, are a group of insects with aquatic larvae and terrestrial adults. There are approximately 14,500 described species, most of which can ...
'', and 2 from the family '' Uenoidae''. Additionally, there was 1 individual from the family ''
Elmidae Elmidae, commonly known as riffle beetles, is a family (biology), family of beetles in the superfamily Byrrhoidea described by John Curtis (entomologist), John Curtis in 1830. Both adults and larvae are usually aquatic, living under rocks in fas ...
'', 5 from the family ''
Psephenidae Water-penny beetles are a family (the Psephenidae) of 272 species (in 35 genera) of aquatic beetles found on all continents except Antarctica, in both tropical and temperate areas. The young, which live in water, resemble tiny pennies. The larv ...
'', 3 from the family ''
Corydalidae The family Corydalidae contains the Megaloptera, megalopterous insects known as dobsonflies and fishflies. Making up about one dozen genera,See references in Haaramo (2008) they occur primarily throughout the Northern Hemisphere, both temperate a ...
'', 1 from the family ''
Aeshnidae The Aeshnidae, also called aeshnids, hawkers, or darners, is a family of dragonflies. The family includes the largest dragonflies found in North America and Europe Europe is a large peninsula conventionally considered a continent in its o ...
'', 42 from the family ''
Chironomidae The Chironomidae (informally known as chironomids, nonbiting midges, or lake flies) comprise a family of nematoceran flies with a global distribution. They are closely related to the Ceratopogonidae, Simuliidae, and Thaumaleidae. Many species ...
'', 5 from the family ''
Tipulidae Crane fly is a common name referring to any member of the insect family (biology), family Tipulidae. Cylindrotominae, Limoniinae, and Pediciinae have been ranked as subfamilies of Tipulidae by most authors, though occasionally elevated to family ...
'', and 1 from the family ''
Cambaridae The Cambaridae are the largest of the four families of freshwater crayfish, with over 400 Species. Most of the species in the family are native the United States east of the Great Divide and Mexico, but fewer range north to Canada, and south to ...
''.
Boreal forest Taiga (; rus, тайга́, p=tɐjˈɡa; relates to Mongolic and Turkic languages), generally referred to in North America as a boreal forest or snow forest, is a biome characterized by coniferous forests consisting mostly of pines, spruces, ...
trees such as
black spruce ''Picea mariana'', the black spruce, is a North American species of spruce tree in the pine family. It is widespread across Canada, found in all 10 provinces and all 3 territories. It is the official tree of the province of Newfoundland and Labra ...
,
paper birch ''Betula papyrifera'' (paper birch, also known as (American) white birch and canoe birch) is a short-lived species of birch native to northern North America. Paper birch is named for the tree's thin white bark, which often peels in paper like ...
, and
tamarack ''Larix laricina'', commonly known as the tamarack, hackmatack, eastern larch, black larch, red larch, or American larch, is a species of larch native to Canada, from eastern Yukon and Inuvik, Northwest Territories east to Newfoundland, and als ...
inhabit
wetland A wetland is a distinct ecosystem that is flooded or saturated by water, either permanently (for years or decades) or seasonally (for weeks or months). Flooding results in oxygen-free (anoxic) processes prevailing, especially in the soils. The ...
s in the watershed of Roaring Brook. Plants such as mountain laurel,
leather leaf ''Chamaedaphne calyculata'', known commonly as leatherleaf or cassandra, is a perennial dwarf shrub in the plant family Ericaceae and the only species in the genus ''Chamaedaphne''. It is commonly seen in cold, acidic bogs and forms large, spread ...
,
pitcher plant Pitcher plants are several different carnivorous plants which have modified leaves known as pitfall traps—a prey-trapping mechanism featuring a deep cavity filled with digestive liquid. The traps of what are considered to be "true" pitcher p ...
,
rhododendron ''Rhododendron'' (; from Ancient Greek ''rhódon'' "rose" and ''déndron'' "tree") is a very large genus of about 1,024 species of woody plants in the heath family (Ericaceae). They can be either evergreen or deciduous. Most species are nati ...
,
huckleberry Huckleberry is a name used in North America for several plants in the family Ericaceae, in two closely related genera: ''Vaccinium'' and ''Gaylussacia''. The huckleberry is the state fruit of Idaho. Nomenclature The name 'huckleberry' is a Nort ...
, and
lady's slipper Cypripedioideae is a subfamily of orchids commonly known as lady's slipper orchids, lady slipper orchids or slipper orchids. Cypripedioideae includes the genera ''Cypripedium, Mexipedium, Paphiopedilum, Phragmipedium'' and ''Selenipedium''. They ...
inhabit bogs in these wetlands.
Old-growth forest An old-growth forestalso termed primary forest, virgin forest, late seral forest, primeval forest, or first-growth forestis a forest that has attained great age without significant disturbance, and thereby exhibits unique ecological featur ...
s containing
oak An oak is a tree or shrub in the genus ''Quercus'' (; Latin "oak tree") of the beech family, Fagaceae. There are approximately 500 extant species of oaks. The common name "oak" also appears in the names of species in related genera, notably ''L ...
,
pine A pine is any conifer tree or shrub in the genus ''Pinus'' () of the family Pinaceae. ''Pinus'' is the sole genus in the subfamily Pinoideae. The World Flora Online created by the Royal Botanic Gardens, Kew and Missouri Botanical Garden accep ...
, and hemlock trees are also present in the Nay Aug Gorge. Upstream of Ridge Row, the stream's riparian buffer is wooded with some rock outcrops. Upstream of Nay Aug, the riparian canopy is mostly intact. Some hemlock trees in the Nay Aug Gorge have been affected by hemlock wooly adelgid. The modified
Hilsenhoff Biotic Index The Hilsenhoff Biotic Index (HBI) is a quantitative method of evaluating the abundance of arthropod fauna in stream ecosystems as a measurement of estimating water quality based on the predetermined pollution tolerances of the observed taxa. This bi ...
value of Roaring Brook upstream of the Hollister Reservoir is 3.25 and the modified EPT Index value is 12. The total taxa richness is 26. Downstream of the reservoir, the modified Hilsenhoff Biotic Index value is 3.1 and the modified EPT Index value is 17. The total taxa richness is 26.


Recreation

In the early 2000s, the Lackawanna River Watershed Conservation Plan recommended constructing a greenway and connecting trail along Roaring Brook. Planned trails in the greenway include the North Pocono rail trail and a link to the Nay Aug Park. The conservation plan recommended linking such a trail to the Lackawanna River Heritage Trail. A proposed pedestrian loop trail would have a footbridge over the stream.
Tourism Tourism is travel for pleasure or business; also the theory and practice of touring (disambiguation), touring, the business of attracting, accommodating, and entertaining tourists, and the business of operating tour (disambiguation), tours. Th ...
opportunities in the watershed of Roaring Brook include the Steamtown excursion line, the Lackawanna Trolley line. A
city park An urban park or metropolitan park, also known as a municipal park (North America) or a public park, public open space, or municipal gardens ( UK), is a park in cities and other incorporated places that offer recreation and green space to resi ...
known as Oakmont Park is in the vicinity of the stream. There are extensive areas of asphalt in the park, but adding
green infrastructure Green infrastructure or blue-green infrastructure refers to a network that provides the “ingredients” for solving urban and climatic challenges by building with nature.Hiltrud Pötz & Pierre Bleuze (2011). Urban green-blue grids for sustainab ...
has been proposed. A 142-acre public park known as the
Nay Aug Park Nay Aug Park is the largest park in Scranton, Pennsylvania, United States. An amusement park on the site closed in the 1990s, but a small amusement area still operates near the swimming pool complex. The park also houses the Nay Aug Gorge, the Ev ...
is also in the watershed. It was founded and 1893 and was popular until the 1950s, when the area entered an economic decline. The park once had a wooden
roller coaster A roller coaster, or rollercoaster, is a type of amusement ride that employs a form of elevated railroad track designed with tight turns, steep slopes, and sometimes inversions. Passengers ride along the track in open cars, and the rides are o ...
and a small zoo, the latter of which was reopened in 2003. There is a ball field at the mouth of the stream.


See also

* Stafford Meadow Brook, next tributary of the Lackawanna River going downriver * Meadow Brook (Lackawanna River), next tributary of the Lackawanna River going upriver *
List of rivers of Pennsylvania This is a list of streams and rivers in the U.S. state of Pennsylvania. By drainage basin This list is arranged by drainage basin, with respective tributaries indented under each larger stream's name. Delaware Bay Chesapeake Bay *''E ...
*
List of tributaries of the Lackawanna River The Lackawanna River is a long river flowing into the Susquehanna River with 65 named tributaries, of which 33 are direct tributaries. The river flows through Susquehanna, Lackawanna, and Luzerne Counties in Pennsylvania. The shortest tribut ...


Notes


References

{{Authority control Rivers of Lackawanna County, Pennsylvania Tributaries of the Lackawanna River Rivers of Pennsylvania