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Wallace Run (Bald Eagle Creek Tributary)
Wallace Run is a tributary of Bald Eagle Creek in Centre County, Pennsylvania, in the United States. It is long and is a low-alkalinity stream. The stream flows through Union Township and Boggs Township in Centre County. Most of the watershed is in Boggs Township. The North Branch of Wallace Run is one tributary of the stream. The watershed has an area of . Oaks, maples, ash trees, birches, hemlocks, and rhododendrons all exist in the upper reaches of the stream, which is mostly forested. The lower reaches of the stream are mostly developed. Course Wallace Run begins in a valley in the Pennsylvania State Game Lands Number 163 in western Union Township. The headwaters are situated on the southern side of the Allegheny Plateau. Foxy Hollow is to the south of the headwaters and Bear Knob is to the east. The stream flows northeast past Dry Hollow and picks up Rock Cabin Run on the left. The stream continues northeast, passing Grindstone Gap on the right and picking up Birch Lick Ru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bald Eagle Creek (West Branch Susquehanna River)
Bald Eagle Creek is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map, accessed August 8, 2011 tributary of the West Branch Susquehanna River mostly in Centre County, Pennsylvania, in the United States. Bald Eagle Creek runs through the Bald Eagle Valley at the foot of the Bald Eagle Mountain ridge to Lock Haven. A shorter Bald Eagle Creek runs south in the valley from the same headlands near the Blair County/Centre County line, terminating in the Little Juniata River in Tyrone. The main line of the Nittany and Bald Eagle Railroad short line runs along the full length of both Bald Eagle creeks. Interstate 80 crosses the creek between Snow Shoe and Bellefonte, and U.S. Route 322 crosses between Port Matilda and State College. Much of the Nittany Valley drains to the creek through water gaps in the Bald Eagle Mountain ridge. Located along the creek in Unionville is the Fisher Farm site, a significant archaeological site.Ste ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conglomerate (geology)
Conglomerate () is a clastic sedimentary rock that is composed of a substantial fraction of rounded to subangular gravel-size clasts. A conglomerate typically contains a matrix of finer-grained sediments, such as sand, silt, or clay, which fills the interstices between the clasts. The clasts and matrix are typically cemented by calcium carbonate, iron oxide, silica, or hardened clay. Conglomerates form by the consolidation and lithification of gravel. They can be found in sedimentary rock sequences of all ages but probably make up less than 1 percent by weight of all sedimentary rocks. In terms of origin and depositional mechanisms, they are closely related to sandstones and exhibit many of the same types of sedimentary structures, e.g., tabular and trough cross-bedding and graded bedding.Boggs, S. (2006) ''Principles of Sedimentology and Stratigraphy.'', 2nd ed. Prentice Hall, New York. 662 pp. Friedman, G.M. (2003) ''Classification of sediments and sedimentary rocks.'' In G ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Swimming Hole
A swimming hole is a place in a river, stream, creek, spring, or similar natural body of water, which is large enough and deep enough for a person to swim in. Common usage usually refers to fresh, moving water and thus not to oceans or lakes. In the UK swimming at natural swimming holes has a long history and has recently become known as "wild swimming", especially since the publication of bestselling books on the subject by Kate Rew and Daniel Start. In southern Australia, a compendium of swimming holes was first characterised by Brad Neal in his 2004 publication of the first edition of the Guide to Freshwater Swimming Holes in Victoria, Australia. Nude swimming is a well-established tradition at some more remote swimming holes and is an attraction for many natural swimming fans, but in many parts of the world remains an illegal activity. History In Europe, as the nineteenth century dawned, a new era of contemporary artists were rediscovering the appeal of the swimming ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fire Road
A firebreak or double track (also called a fire line, fuel break, fireroad and firetrail in Australia) is a gap in vegetation or other combustible material that acts as a barrier to slow or stop the progress of a bushfire or wildfire. A firebreak may occur naturally where there is a lack of vegetation or "fuel", such as a river, lake or canyon. Firebreaks may also be man-made, and many of these also serve as roads, such as a logging road, four-wheel drive trail, secondary road, or a highway. Overview In the construction of a firebreak, the primary goal is to remove deadwood and undergrowth down to mineral soil. Various methods may be used to accomplish this initially and to maintain this condition. Ideally, the firebreak will be constructed and maintained according to the established practices of sustainable forestry and fire protection engineering, also known as best management practices (BMP). The general goals are to maximize the effectiveness of the firebreak at slowing th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Civilian Conservation Corps
The Civilian Conservation Corps (CCC) was a voluntary government work relief program that ran from 1933 to 1942 in the United States for unemployed, unmarried men ages 18–25 and eventually expanded to ages 17–28. The CCC was a major part of President Franklin D. Roosevelt's New Deal that supplied manual labor jobs related to the conservation and development of natural resources in rural lands owned by federal, state, and local governments. The CCC was designed to supply jobs for young men and to relieve families who had difficulty finding jobs during the Great Depression in the United States Robert Fechner was the first director of this agency, succeeded by James McEntee following Fechner's death. The largest enrollment at any one time was 300,000. Through the course of its nine years in operation, three million young men took part in the CCC, which provided them with shelter, clothing, and food, together with a wage of $30 (equivalent to $1000 in 2021) per month ($25 of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 subphylum Vertebrata. Familiar examples of invertebrates include arthropods, mollusks, annelids, echinoderms and cnidarians. The majority of animal species are invertebrates; one estimate puts the figure at 97%. Many invertebrate taxa have a greater number and variety of species than the entire subphylum of Vertebrata. Invertebrates vary widely in size, from 50 μm (0.002 in) rotifers to the 9–10 m (30–33 ft) colossal squid. Some so-called invertebrates, such as the Tunicata and Cephalochordata, are more closely related to vertebrates than to other invertebrates. This makes the invertebrates paraphyletic, so the term has little meaning in taxonomy. Etymology The word "invertebrate" comes from the Latin word ''vertebra'', whic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 separate Game Commission. Its mission is: to protect, conserve, and enhance the Commonwealth's aquatic resources and provide fishing and boating opportunities. Created by law signed on March 23, 1866 by Governor Andrew Curtin, its original main purpose was to restore fish migrations of American shad within the rivers. Today, its scope manages boat launches, waterways, fish hatcheries, and other properties used for recreational fishing and boating. It also regulates the accessibility through dams on major waterways via fish ladders. Ten members make up the Board of Commissioners who oversee all operations, serving 8-year terms without pay. Among others, the Commission employs waterway conservation officers and biologists, while also utilizin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grade (slope)
The grade (also called slope, incline, gradient, mainfall, pitch or rise) of a physical feature, landform or constructed line refers to the tangent of the angle of that surface to the horizontal. It is a special case of the slope, where zero indicates horizontality. A larger number indicates higher or steeper degree of "tilt". Often slope is calculated as a ratio of "rise" to "run", or as a fraction ("rise over run") in which ''run'' is the horizontal distance (not the distance along the slope) and ''rise'' is the vertical distance. Slopes of existing physical features such as canyons and hillsides, stream and river banks and beds are often described as grades, but typically grades are used for human-made surfaces such as roads, landscape grading, roof pitches, railroads, aqueducts, and pedestrian or bicycle routes. The grade may refer to the longitudinal slope or the perpendicular cross slope. Nomenclature There are several ways to express slope: # as an ''angle'' of inc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Narrow-gauge Railway
A narrow-gauge railway (narrow-gauge railroad in the US) is a railway with a track gauge narrower than standard-gauge railway, standard . Most narrow-gauge railways are between and . Since narrow-gauge railways are usually built with Minimum railway curve radius, tighter curves, smaller structure gauges, and lighter rails, they can be less costly to build, equip, and operate than standard- or broad-gauge railways (particularly in mountainous or difficult terrain). Lower-cost narrow-gauge railways are often used in mountainous terrain, where engineering savings can be substantial. Lower-cost narrow-gauge railways are often built to serve industries as well as sparsely populated communities where the traffic potential would not justify the cost of a standard- or broad-gauge line. Narrow-gauge railways have specialised use in mines and other environments where a small structure gauge necessitates a small loading gauge. In some countries, narrow gauge is the standard; Japan, Indone ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sunday School
A Sunday school is an educational institution, usually (but not always) Christian in character. Other religions including Buddhism, Islam, and Judaism have also organised Sunday schools in their temples and mosques, particularly in the West. Sunday school classes usually precede a Sunday church service and are used to provide catechesis to Christians, especially children and teenagers, and sometimes adults as well. Churches of many Christian denominations have classrooms attached to the church used for this purpose. Many Sunday school classes operate on a set curriculum, with some teaching attendees a catechism. Members often receive certificates and awards for participation, as well as attendance. Sunday school classes may provide a light breakfast. On days when Holy Communion is being celebrated, however, some Christian denominations encourage fasting before receiving the Eucharistic elements. Early history Sunday schools were first set up in the 18th century in England to pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Discharge (hydrology)
In hydrology, discharge is the volumetric flow rate of water that is transported through a given cross-sectional area. It includes any suspended solids (e.g. sediment), dissolved chemicals (e.g. CaCO3(aq)), or biologic material (e.g. diatoms) in addition to the water itself. Terms may vary between disciplines. For example, a fluvial hydrologist studying natural river systems may define discharge as streamflow, whereas an engineer operating a reservoir system may equate it with outflow, contrasted with inflow. Theory and calculation A discharge is a measure of the quantity of any fluid flow over unit time. The quantity may be either volume or mass. Thus the water discharge of a tap (faucet) can be measured with a measuring jug and a stopwatch. Here the discharge might be 1 litre per 15 seconds, equivalent to 67 ml/second or 4 litres/minute. This is an average measure. For measuring the discharge of a river we need a different method and the most common is the 'area-velocity' method. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Levee
A levee (), dike (American English), dyke (English in the Commonwealth of Nations, Commonwealth English), embankment, floodbank, or stop bank is a structure that is usually soil, earthen and that often runs parallel (geometry), parallel to the course of a river in its floodplain or along low-lying coastlines. The purpose of a levee is to keep the course of rivers from changing and to protect against flooding of the area adjoining the river or coast. Levees can be naturally occurring ridge structures that form next to the bank of a river, or be an artificially constructed fill dirt, fill or wall that regulates water levels. Ancient civilizations in the Indus Valley civilisation, Indus Valley, ancient Egypt, Mesopotamia and China all built levees. Today, levees can be found around the world, and failures of levees due to erosion or other causes can be major disasters. Etymology Speakers of American English (notably in the Midwestern United States, Midwest and Deep South) u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
