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Black River (Saucon Creek)
Black River (also known as Black Creek or Black River Creek) is a tributary of Saucon Creek in Lehigh and Northampton counties in the US state of Pennsylvania. It is approximately long and flows through Upper Saucon and Salisbury townships in Lehigh County and Lower Saucon Township and Bethlehem in Northampton County. The watershed of the river has an area of . It is designated as a Coldwater Fishery and a Migratory Fishery and contains wild trout. The river is a very small limestone stream and flows in the vicinity of Lehigh University's Saucon Fields. Course The Black River begins on a hill in Upper Saucon Township, Lehigh County. It flows north-northeast for a few tenths of a mile, then continues north-northeast for several tenths of a mile as the border between Salisbury Township and Lower Saucon Township. It passes through an unnamed pond and then turns east for several tenths of a mile, entering Lower Saucon Township, Northampton County. It then heads in a southeasterly d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 pattern from The Poconos in Northeastern Pennsylvania through Allentown and much of the Lehigh Valley before enjoining the Delaware River in Easton. Part of the Lehigh River and a number of its tributaries are designated Pennsylvania Scenic Rivers by the state's Department of Conservation and Natural Resources. The river's name "Lehigh" is an anglicisation of the Lenape name for the river, ''Lechewuekink'', which means "where there are forks". Both Lehigh County and Lehigh Valley are named for the river. According to an environmental report from a Pennsylvania nonprofit research center, the Lehigh River watershed is ranked second nationally in the volume of toxic substances released into it in 2020. The study mirrors a previous report b ... [...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] |
Hellertown, Pennsylvania
Hellertown is a borough in Northampton County, Pennsylvania. Its population was 6,132 at the 2020 census. Hellertown is part of the Lehigh Valley metropolitan area, which had a population of 861,899 and was the 68th most populous metropolitan area in the U.S. as of 2020. The borough is home to Lost River Caverns, a natural limestone cavern. Geography Hellertown is located at (40.584099, -75.338139). According to the U.S. Census Bureau, the borough has a total area of , all land. Government and politics Legislators *State Representative Robert L. Freeman, Democrat, 136th district *State Senator Lisa Boscola, Democrat, 18th district *US Representative Susan Wild, Democrat, 7th district Transportation Pennsylvania Route 412 Pennsylvania Route 412 (PA 412) is a north–south state route located in Northampton and Bucks counties in southeastern Pennsylvania. Its southern terminus is at PA 611 in the Nockamixon Township community of Harrow. Its northern termin ... runs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quadrangle (geography)
A "quadrangle" is a topographic map produced by the United States Geological Survey (USGS) covering the United States. The maps are usually named after local physiographic features. The shorthand "quad" is also used, especially with the name of the map; for example, "the Ranger Creek, Texas quad". From approximately 1947-1992, the USGS produced the 7.5 minute series, with each map covering an area one-quarter of the older 15-minute quad series, which it replaced. A 7.5 minute quadrangle map covers an area of . Both map series were produced via photogrammetric analysis of aerial photography using stereoplotters supplemented by field surveys. These maps employ the 1927 North American Datum (NAD27); conversion or a change in settings is necessary when using a GPS which by default employ the WGS84 geodetic datum. Beginning in 2009, the USGS made available digital versions of 7.5 minute quadrangle maps based on GIS data that use the NAD83 datum, which is typically within one meter of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drainage Basin
A drainage basin is an area of land where all flowing surface water converges to a single point, such as a river mouth, or flows into another body of water, such as a lake or ocean. A basin is separated from adjacent basins by a perimeter, the '' drainage divide'', made up of a succession of elevated features, such as ridges and hills. A basin may consist of smaller basins that merge at river confluences, forming a hierarchical pattern. Other terms for a drainage basin are catchment area, catchment basin, drainage area, river basin, water basin, and impluvium. In North America, they are commonly called a watershed, though in other English-speaking places, "watershed" is used only in its original sense, that of a drainage divide. In a closed drainage basin, or endorheic basin, the water converges to a single point inside the basin, known as a sink, which may be a permanent lake, a dry lake, or a point where surface water is lost underground. Drainage basins are similar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 land surface in ponds and puddles, evaporate back into the atmosphere, or contribute to surface runoff. Most runoff is conveyed directly as surface water to nearby streams, rivers or other large water bodies (wetlands, lakes and oceans) without treatment. In natural landscapes, such as forests, soil absorbs much of the stormwater. Plants also reduce stormwater by improving infiltration, intercepting precipitation as it falls, and by taking up water through their roots. In developed environments, such as cities, unmanaged stormwater can create two major issues: one related to the volume and timing of runoff (flooding) and the other related to potential contaminants the water is carrying (water pollution). In addition to the pollutants carr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stackpole Books
Stackpole Books is a trade publishing company in Mechanicsburg, Pennsylvania. It was founded by E. J. Stackpole Jr. in Harrisburg, Pennsylvania, in 1930 and was moved to its current headquarters in 1993. Stackpole publishes nonfiction books in the areas of crafts, outdoors, regional and travel, military history, and military reference. The current CEO is M. David Detweiler, and the Publisher and Editorial Director is Judith Schnell. History The publishing company that became Stackpole Books has its origins with the Harrisburg newspaper ''Evening Telegraph'', which was founded in the early 19th century. In 1901, controlling interest in the Telegraph Press was acquired by E. J. Stackpole Sr. The business was carried on by Stackpole's son, Edward James Stackpole Jr., a decorated general in World War I who received the Distinguished Service Cross, the Silver Star, and three Purple Hearts. In 1930, the National Service Publishing Company of Washington, D.C., which had been established ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silver Creek (Saucon Creek)
Silver Creek is a tributary of Saucon Creek in Northampton County, Pennsylvania. It is approximately long and flows through Lower Saucon Township and Hellertown. The watershed of the creek has an area of . The creek is a very small stream that is urban in its lower reaches. However, it is not designated as an impaired waterbody and is inhabited by trout. The creek has been a major source of flooding in Hellertown. Course Silver Creek begins to the east of a hill known as Swoveberg. It flows north-northwest and then turns west for several tenths of a mile, heading into a valley between Swoveberg, Kirchberg, and Focht Hill and then flows west-southwest for more than a mile before turning west-northwest for a few tenths of a mile and reaching the border of Hellertown, where it flows north along the border for a short distance before turning west into Hellertown. The creek then flows southwest and west-southwest for several tenths of a mile before crossing Pennsylvania Route 412 and r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
River Source
The headwaters of a river or stream is the farthest place in that river or stream from its estuary or downstream confluence with another river, as measured along the course of the river. It is also known as a river's source. Definition The United States Geological Survey (USGS) states that a river's "length may be considered to be the distance from the mouth to the most distant headwater source (irrespective of stream name), or from the mouth to the headwaters of the stream commonly known as the source stream". As an example of the second definition above, the USGS at times considers the Missouri River as a tributary of the Mississippi River. But it also follows the first definition above (along with virtually all other geographic authorities and publications) in using the combined Missouri—lower Mississippi length figure in lists of lengths of rivers around the world. Most rivers have numerous tributaries and change names often; it is customary to regard the longest ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 the Marshall Islands, Federated States of Micronesia, and Palau. It is a type of gazetteer. It was developed by the United States Geological Survey (USGS) in cooperation with the United States Board on Geographic Names (BGN) to promote the standardization of feature names. Data were collected in two phases. Although a third phase was considered, which would have handled name changes where local usages differed from maps, it was never begun. The database is part of a system that includes topographic map names and bibliographic references. The names of books and historic maps that confirm the feature or place name are cited. Variant names, alternatives to official federal names for a feature, are also recorded. Each feature receives a per ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 geodetic datumthat is used, for example, as a chart datum in cartography and marine navigation, or, in aviation, as the standard sea level at which atmospheric pressure is measured to calibrate altitude and, consequently, aircraft flight levels. A common and relatively straightforward mean sea-level standard is instead the midpoint between a mean low and mean high tide at a particular location. Sea levels can be affected by many factors and are known to have varied greatly over geological time scales. Current sea level rise is mainly caused by human-induced climate change. When temperatures rise, Glacier, mountain glaciers and the Ice sheet, polar ice caps melt, increasing the amount of water in water bodies. Because most of human settlem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
River Mouth
A river mouth is where a river flows into a larger body of water, such as another river, a lake/reservoir, a bay/gulf, a sea, or an ocean. At the river mouth, sediments are often deposited due to the slowing of the current reducing the carrying capacity of the water. The water from a river can enter the receiving body in a variety of different ways. The motion of a river is influenced by the relative density of the river compared to the receiving water, the rotation of the earth, and any ambient motion in the receiving water, such as tides or seiches. If the river water has a higher density than the surface of the receiving water, the river water will plunge below the surface. The river water will then either form an underflow or an interflow within the lake. However, if the river water is lighter than the receiving water, as is typically the case when fresh river water flows into the sea, the river water will float along the surface of the receiving water as an overflow. Alon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
