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Deer Creek (Maryland)
Deer Creek is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map , accessed August 8, 2011 river in Maryland and Pennsylvania that flows through the scenic areas of Harford County and empties into the Susquehanna River, roughly halfway between the Interstate 95 bridge and Conowingo Dam. Its watershed area is .Deer Creek Watershed Restoration Action Strategy, Harford County Dept. of Planning and Zoning, 200, accessed June 13, 2012 Its watershed area in MD (excluding water) is , with 3% impervious surface in 1994.Deer Creek, MD Surf your watershed, Watershed profile accessed June 13, 2012 It serves as a divider between the agricultural and urban/suburban areas of Harford County. Deer Creek rises in Shrewsbury, Pennsylvania, Shrewsbury in York County, Pennsylvania, and flows southeast, soon entering Maryland. It cuts across the northeastern corner of Baltimore County and into Harford County, where it runs through Rocks State Park, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maryland
Maryland ( ) is a state in the Mid-Atlantic region of the United States. It shares borders with Virginia, West Virginia, and the District of Columbia to its south and west; Pennsylvania to its north; and Delaware and the Atlantic Ocean to its east. Baltimore is the largest city in the state, and the capital is Annapolis. Among its occasional nicknames are '' Old Line State'', the ''Free State'', and the '' Chesapeake Bay State''. It is named after Henrietta Maria, the French-born queen of England, Scotland, and Ireland, who was known then in England as Mary. Before its coastline was explored by Europeans in the 16th century, Maryland was inhabited by several groups of Native Americans – mostly by Algonquian peoples and, to a lesser degree, Iroquoian and Siouan. As one of the original Thirteen Colonies of England, Maryland was founded by George Calvert, 1st Baron Baltimore, a Catholic convert"George Calvert and Cecilius Calvert, Barons Baltimore" William Hand Browne, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bel Air, Maryland
The town of Bel Air is the county seat of Harford County, Maryland. According to the 2020 United States census, the population of the town was 10,661. History Bel Air's identity has gone through several incarnations since 1780. Aquilla Scott, who had inherited land known as "Scott's Improvement Enlarged," planned the town on a portion that he called "Scott's Old Fields." Four years later, the town had expanded as local politicians, merchants, and innkeepers purchased lots from Scott, and the county commissioners decided to change its name to the more appealing "Belle Aire." In his deeds, Scott dropped one letter, renaming the town, "Bell Aire." Around 1798, court records dropped two more letters, and "Bel Air" was born. During this period, Bel Air began to rise in prominence. In 1782, just two years after its founding, it became Harford's county seat, and Daniel Scott (Aquilla's son) started building a courthouse on Main Street. Although the town limits in the late 18th century ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rivers Of Harford County, Maryland
A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river. In some cases, a river flows into the ground and becomes dry at the end of its course without reaching another body of water. Small rivers can be referred to using names such as creek, brook, rivulet, and rill. There are no official definitions for the generic term river as applied to geographic features, although in some countries or communities a stream is defined by its size. Many names for small rivers are specific to geographic location; examples are "run" in some parts of the United States, "burn" in Scotland and northeast England, and "beck" in northern England. Sometimes a river is defined as being larger than a creek, but not always: the language is vague. Rivers are part of the water cycle. Water generally collects in a river from precipitation through a drainage basin from surface runoff and other sources such as groundwater recharge, springs, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shrewsbury Township, York County, Pennsylvania
Shrewsbury Township is a township in York County, Pennsylvania, United States. The population was 6,651 at the 2020 census. History The Fissel's School, Bridge 634, Northern Central Railway, Bridge 182+42, Northern Central Railway, and Stone Arch Road Bridge, Stewartstown Railroad are listed on the National Register of Historic Places. Geography According to the United States Census Bureau, the township has a total area of , of which 0.03% is water. The township is located in southern York County adjacent to the Maryland-Pennsylvania border and along Interstate 83, between York to the north and Baltimore to the south. Shrewsbury Township surrounds the boroughs of Shrewsbury, Glen Rock, Railroad, and New Freedom. Demographics At the 2000 census there were 5,947 people, 2,157 households, and 1,729 families living in the township. The population density was . There were 2,206 housing units at an average density of . The racial makeup of the township was 98.52% White, 0 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hopewell Township, York County, Pennsylvania
Hopewell Township is a township in York County, Pennsylvania, United States. The population was 5,267 at the 2020 census. It is served by the South Eastern School District, which provides public education. History Prior to 1885, Hopewell Township included present-day Hopewell Township, East Hopewell Township, and North Hopewell Township; thus, the original township extended as far north as that of York.https://ancestortracks.com/York%20County/YorkCo.townships(smaller).jpg The Deer Creek Bridge, Stewartstown Railroad, Ridge Road Bridge, Stewartstown Railroad, and Valley Road Bridge, Stewartstown Railroad are listed on the National Register of Historic Places. Geography According to the United States Census Bureau, the township has a total area of , all land. The township completely surrounds the borough of Stewartstown. Demographics As of the census of 2000, there were 5,062 people, 1,766 households, and 1,464 families living in the township. The population density w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stewartstown Railroad
The Stewartstown Railroad is a heritage railroad in Stewartstown, Pennsylvania. Chartered in 1884 by local interests in the Stewartstown area and opened in 1885, the Stewartstown Railroad survives today in very much original condition and retains its original corporate charter. The railroad was organized by a group of local citizens in 1884 to connect Stewartstown and its agricultural base with the Northern Central Railway's Harrisburg–Baltimore route at nearby New Freedom. The route posed many obstacles, including steep grades and sharp curves, and took nearly a year to complete, opening in 1885. In the early years, there were six trains each day, carrying passengers and agricultural products. The New Park & Fawn Grove Railroad opened in 1906, running for between Fawn Grove and the eastern terminus of the Stewartstown Railroad in Stewartstown. Efforts in 1906, 1909, and 1924 to extend the New Park & Fawn Grove from Fawn Grove to slate and marble quarries in Delta were never ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deer Creek Bridge, Stewartstown Railroad
Deer Creek Bridge, Railroad was a historic railroad bridge in Hopewell Township and Shrewsbury Township, York County, Pennsylvania. It was built about 1895, and measures and overall. The girder bridge was built by the Stewartstown Railroad. The bridge crosses Deer Creek. ''Note:'' This includes It was added to 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 ... in 1995. References {{NRHP bridges Railroad bridges on the National Register of Historic Places in Pennsylvania Bridges completed in 1895 Bridges in York County, Pennsylvania National Register of Historic Places in York County, Pennsylvania Girder bridges in the United States ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vertebrate
Vertebrates () comprise all animal taxa within the subphylum Vertebrata () ( chordates with backbones), including all mammals, birds, reptiles, amphibians, and fish. Vertebrates represent the overwhelming majority of the phylum Chordata, with currently about 69,963 species described. Vertebrates comprise such groups as the following: * jawless fish, which include hagfish and lampreys * jawed vertebrates, which include: ** cartilaginous fish (sharks, rays, and ratfish) ** bony vertebrates, which include: *** ray-fins (the majority of living bony fish) *** lobe-fins, which include: **** coelacanths and lungfish **** tetrapods (limbed vertebrates) Extant vertebrates range in size from the frog species ''Paedophryne amauensis'', at as little as , to the blue whale, at up to . Vertebrates make up less than five percent of all described animal species; the rest are invertebrates, which lack vertebral columns. The vertebrates traditionally include the hagfish, which do no ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemism
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can be also be referred to as an ''endemism'' or in scientific literature as an ''endemite''. For example '' Cytisus aeolicus'' is an endemite of the Italian flora. '' Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a non-indigenous species from South America belonging to a different genus. The extreme opposite of an endemic species is one with a cosmopolitan distribution, having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maryland Darter
The Maryland darter (''Etheostoma sellare'') is a species of freshwater ray-finned fish, a darter from the subfamily Etheostomatinae, part of the family Percidae, which also contains the perches, ruffes and pikeperches. It is considered one of the rarest freshwater fish species in the world, due in part to its incredibly limited geographic range and difficulty of detection. The last sighting of one was in 1988. The Maryland darter is named after the only state in which it is known to occur. The species was long known only by two specimens until being "re-discovered" in 1962. From 1965 into the 1980s, the species was believed to have been confined to a single riffle in Deer Creek. Possible explanations for the decline of the species center around widespread habitat degradation and reduction in water quality resulting from increasing rates of urbanization within the watershed. While the IUCN has declared the species extinct, the United States Fish and Wildlife Service has not, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Migration
Fish migration is mass relocation by fish from one area or body of water to another. Many types of fish migrate on a regular basis, on time scales ranging from daily to annually or longer, and over distances ranging from a few metres to thousands of kilometres. Such migrations are usually done for better feeding or to reproduce, but in other cases the reasons are unclear. Fish migrations involve movements of schools of fish on a scale and duration larger than those arising during normal daily activities. Some particular types of migration are ''anadromous'', in which adult fish live in the sea and migrate into fresh water to spawn; and ''catadromous'', in which adult fish live in fresh water and migrate into salt water to spawn. Marine forage fish often make large migrations between their spawning, feeding and nursery grounds. Movements are associated with ocean currents and with the availability of food in different areas at different times of year. The migratory movements m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Ladder
A fish ladder, also known as a fishway, fish pass, fish steps, or fish cannon is a structure on or around artificial and natural barriers (such as dams, locks and waterfalls) to facilitate diadromous fishes' natural migration as well as movements of potamodromous species. Most fishways enable fish to pass around the barriers by swimming and leaping up a series of relatively low steps (hence the term ''ladder'') into the waters on the other side. The velocity of water falling over the steps has to be great enough to attract the fish to the ladder, but it cannot be so great that it washes fish back downstream or exhausts them to the point of inability to continue their journey upriver. History Written reports of rough fishways date to 17th-century France, where bundles of branches were used to make steps in steep channels to bypass obstructions. A pool and weir salmon ladder was built around 1830 by James Smith, a Scottish engineer on the River Teith, near Deanston, Perthshire ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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