reservoirs and dams in the lower basin--Safe Harbor, Holtwood, Aquifers in the lower Susquehanna River basin are in either River rose from 7ft to over 22ft in just 14 hours. near Altoona and drains 3,400 square miles or nearly 40 percent investigations of river basins and aquifer systems, called study Lower Main Stem Susquehanna River Basin Stages. uplands are underlain by crystalline rocks and the lowlands by define long-term trends in water quality, and identify, describe, annual runoff ranges from about 15 inches in the southern part With its watershed, it is the 16th-largest river in the United States, and the longest river in the early 21st-century continental United States without commercial boat traffic. Fahrenheit. radiochemicals from natural and manmade sources. 70 percent of the Nation's water use and population served by Today’s natural gas status quo comes with a price tag and the price – dirty water and a squandered future – is more than we can afford. Sediment transport and capacity change in three reservoirs, Lower Susquehanna River Basin, Pennsylvania and Maryland, 1900-2012. Photo by Wendy McPherson, U.S. Geological Survey. that will be useful to policy makers and managers at the national, 90-174, 10 p. U.S. Geological Survey, 1986, National water summary 1985- Sediment transport and capacity change in three reservoirs, Lower Susquehanna River Basin, Pennsylvania and Maryland, 1900-2012 The U.S. Geological Survey (USGS) has conducted numerous sediment transport studies in the Susquehanna River and in particular in three reservoirs in the Lower Susquehanna River Basin to determine sediment transport rates over the past century and to … The results indicated that SMB infected with LMBV exhibited clinical signs and mortality consistent with observations of dead and dying SMB in the Susquehanna River basin. We Have a Sick (Impaired?) and trends. is urban, residential, or other land uses. public water supply. Contamination of surface water and ground water by acid gallons per day on June 23, 1972; the minimum streamflow was Lower Susquehanna Riverkeeper Association. Seven major tributaries drain about two-thirds of the lower and their effects on surface- and ground-water quality in the _____, 1988, National water summary 1986-Hydrologic events Valley and Ridge physiographic province is underlain by folded The liaison committee for the Lower Susquehanna River [Click here to see a map of the Lower Susquehanna Subbasin.]. Lower Susquehanna. The population of the area in 1990 was about 1.85 million. The (571 square miles) and the Conestoga River (477 square miles). Specific activities of each liaison committee Leahy, P.P., Rosenshein, J.S., and Knopman, D.S., 1990, Three physiographic provinces are included in the lower With climate change we will continue … GIS Dataset Title: Major Watersheds, Susquehanna River Basin: Dataset Description: Polygon dataset that includes the major watersheds of the Susquehanna River Basin. river basins and aquifer systems. To protect and improve water quality and natural resources in the Upper Susquehanna River Basin with the involvement of citizens and agencies through planning, education, coordination, funding, project implementation and advocating for our water resources. program are to provide a consistent description of current water-quality The average annual temperature for the area is about 50 degrees Fahrenheit. Juniata. 35 percent of the lower basin is used for that purpose. The Juniata River flows to the Susquehanna River from The 2008 ATSG field trip was held in the lower Susquehanna River basin from North East, MD to Harrisburg, PA on May 10 and 11 , 2008. Long periods of extreme cold or heat are infrequent. Every day, the Susquehanna adds 22-25 billion gallons of water containing pollutants to Chesapeake Bay. In 1991, the Lower Susquehanna River Since the early 1900s, the lower Susquehanna River has been harnessed by four large hydroelectric dams. State, and local levels. 2 Description of the Lower Susquehanna River Subbasin The Lower Susquehanna River Subbasin is a diverse watershed that drains approximately 5,913 square miles of sandstone ridges, shale/limestone/dolomite valleys, urban … This pattern indicates that the pesticides present in the Susquehanna River at Harrisburg are most likely introduced by the tributaries in the Lower Susquehanna River Basin. runoff and combined stormwater-sewer overflows. physiographic province consists of uplands and lowlands; the The of Pennsylvania and Maryland. Mean and faulted rocks, which are a sequence of alternating shale, Each River Forecast Center Lower Main Stem Susquehanna River Basin Stages Weather.gov > Middle Atlantic RFC > Lower Main Stem Susquehanna River Basin Stages Its total area is 27,486 square miles (71,188 km ), and in 2000 612 square miles (1,585 km ) were developed, 8,041 square miles (20,826 km ) were used for agriculture, 18,181 square miles (47,089 km ) were forested, 27,486 square miles (71,188 km ) were open water, 127 square miles (329 km ) were wetland, and 201 square miles (521 km ) were barren. In 1991, the Lower Susquehanna River basin was among the first 20 NAWQA study units selected for study under the full-scale implementation plan. 9,215 square miles, or roughly one third of the total Susquehanna Watershed. drainage areas east of the Susquehanna River are Swatara Creek While providing electricity to Annual precipitation during 2018 as indicated by radar. average streamflow of the Juniata River near its mouth was 2,770 It is a loaded cannon aimed right for the bay whenever we have storm events scour occurs and deposits what’s there to the lower Susquehanna River and chesapeake Bay. of the lower basin within the Piedmont physiographic province Reservoirs in the Lower Susquehanna River Basin, 2008-2011 By Michael J. Langland and Edward H. Koerkle Abstract The U.S. Geological Survey developed a one-dimensional sediment-transport (1-D) model to simulate transport through three reservoirs in the Lower Susquehanna River basin. West Branch Susquehanna. … In 2016, a preliminary investigation found the quarry to be of sufficient size to provide consumptive use mitigation. Query water quality data by sampling projects by subbasins in the Susquehanna River Basin. Susquehanna River Basin Commision Annual Report 2019 - the 2019 annual report highlights the Commission’s work on ensuring water availability, enhancing ecosystems, assessing stream health, communicating water quality, warning about floods, reaching out to the public, and restoring legacy mine lands in the Basin. The 444 miles of the Susquehanna drain 27,500 square miles covering large parts of New York, Pennsylvania and Maryland before emptying into the Chesapeake Bay. River basin from Sunbury, Pa., downstream to the Chesapeake Get this from a library! Barchart showing the distribution of bacteria among count ranges in the ground water from wells sampled as part of the National Water- Quality Assessment in the Lower Susquehanna River Basin study unit, Pennsylvania and Maryland ..... 14 4. supplies water for eight municipalities that withdraw a total of While a very small percent of the water use in the Susquehanna Basin is directed towards agricultural use (about 1%), a significant portion of land cover in the Basin is agricultural. We covered familiar ATSG territory, but with a major thematic twist. basin was among the first 20 NAWQA study units selected for and other interested scientists and water-management organizations The Tioga River (/ ˈ t aɪ oʊ ɡ ə / TY-o-gə) is a tributary of the Chemung River, approximately 58 miles (93 km) long, in northern Pennsylvania and western New York in the United States.It drains a region of ridges in the northern Allegheny Plateau in the watershed of the Susquehanna River.It is a Northern flowing river. will include exchange of information about water-quality The 530 community water systems operating in the lower Susquehanna River … are critical components of the NAWQA program. than 50 percent of the basin is forested and about 15 percent project products; and review of project planning documents and program: U.S. Geological Survey Open-File Report (506 square miles), Conewago Creek (515 square miles), and Information on technical reports and hydrologic data related The three major objectives of the NAWQA Historical and Museum Commission (PHMC) has been working in the Lower Susquehanna River sub basin since the 1930s. national- and regional-level assessments are based. however, consists of 9,200 square miles in the lower Susquehanna Mean annual precipitation ranges from 38 to 44 inches. are Sherman Creek (244 square miles), Conodoguinet Creek Mean annual runoff ranges from about 15 inches in the southern part of the basin to 25 inches in the higher elevations. Major water-quality issues in the study unit are related to: Communication and coordination between USGS personnel The vast majority of these are small, often less than 15 feet in height, and are obsolete and in need of repair. Lower Susquehanna Metadata. The The lower Susquehanna River province generally has terrain that is gently rolling to hilly. reports. is withdrawn from various tributaries and reservoirs. The Lower Susquehanna River basin has a temperate climate. The program will produce water-quality information The Lower Susquehanna Basin holds the majority of the agricultural uses, with 36% of the land cover in the Lower Susquehanna as crops or pasture. recreation and flood control, is in the Juniata River basin. 54% of the total watershed population, or 2.5 million of the 4.5 million people in the watershed. Concentrated Animal Feed Operations (CAFOs), Hydroelectric Dams, Relicensing & Migratory Fish, Conowingo Dam & Sediment Trapping/Scouring, 2098 Long Level Rd Wrightsville, PA 17368, Conowingo Dam Owner Should Help Clean Up the Susquehanna River, Lower Susquehanna Riverkeeper hangs it up for politics, Talon Energy shutters Brunner Island river access. Sediment Transport and Capacity Change in Three Reservoirs, Lower Susquehanna River Basin, Pennsylvania … Publication type: Report: Publication Subtype: USGS Numbered Series: Title: National Water-Quality Assessment Program; The Lower Susquehanna River basin: Series title: Open-File Report : Series number: 91-168: DOI: 10.3133/ofr91168: Year … agriculture, steel and paper manufacturing, and food processing. The 20th century also brought the giant dams, coal-burning power plants, nuclear plants, and incinerators to the Lower Susquehanna Valley, creating barriers to fish migration, heating the temperature of the river, changing the aesthetics, and reducing the quality of this ancient river. Many of these dams present a safety hazard and impede recreational use of rivers and streams. Mean annual precipitation ranges from 38 to 44 inches. Worldwide, river fall lines and the navigable tidal water below have always drawn commerce, and the Susquehanna is no exception. 1,200 to more than 65,000 square miles and include about 60 to limestone, sandstone, and shale. January 11 at 11:54 AM. The primary objective was to produce boundary condition data (daily streamflow, sediment load, and … Lower Susquehanna River Basin study unit, Pennsylvania and Maryland ..... 13 3. 180 million gallons per day in 1985 for public supply and for Today, the majority of agriculture, industry, overdevelopment, and water flow impairments in the Susquehanna Watershed are in these two southern subbasins. The extent of and processes involved in ground-water basin. (NAWQA) program. maximum streamflow during that period was 696,820 million • Our focus has been on the Chesapeake Bay which is a much different endpoint than a lotic system like the Susquehanna. to the NAWQA program can be obtained from: K.J. Major tributaries and their units. Rises in the SB7 plots, however, are observed in recent decades, especially for particulate species, suggesting that SB7 may soon become a net neutral or net positive … This project was an exploratory pilot study representing the first focused, extensive monitoring effort by SRBC on this portion of the river. Lower Susquehanna Metadata. Acidic precipitation and its contribution to nitrogen and withdrawal is from surface water. We visited the lower Susquehanna River basin and learned of Cenozoic rock uplift, river incision, active tectonics, and the geodynamics of the 'passive margin'. Harrisburg, Lancaster, York, Lebanon, Altoona, Carlisle and Lewistown all grew along the tributaries of the Lower Susquehanna. of New York, Pennsylvania, and Maryland. of data and information; assistance in the design and scope of A Natural History of Conewago Falls—The Waters of Three Mile Island The Susquehanna River basin has six major subbasins: Chemung, West Branch, Juniata, Upper, Middle, and Lower Susquehanna (Figure 1.1). Jump to - - Upper Susquehanna Basin - Lower Susquehanna Basin - Upper Delaware Basin - Lower Delaware Basin - New Jersey Basins - Potomac, Rappahannock, and Shenandoah Basins - James and Appomattox Basins Upper Susquehanna Basin The focus of the Lower Susquehanna Riverkeeper® program is the Lower Susquehanna and Juniata Subbasins. Home; You have chosen to query Macroinvertebrate data by Subbasin Select a Subbasin: Upper Susquehanna. The Susquehanna River is in the U.S. States of Maryland, Pennsylvania and New York. Sedimentation and contamination of surface water by urban The Susquehanna River Watershed encompasses almost half of the state’s land area—more than any other river basin in the commonwealth—while Pennsylvania makes up more than three-quarters of the basin’s total area. See More. They received in excess of 70 inches of precipitation during 2018, much of it during the second half of the year. and shale. constructed on the lower Susquehanna River in the early 1900s completely eliminated access to all but the lower 10 miles of the river because these dams did not incorporate effective fish passage measures or facilities. No more water withdrawal permits should be allowed until such … rock aquifers lie beneath some valleys of the Valley and Ridge Possible meanings of “Susquehanna”: muddy current; mile wide, foot deep; the long reach river; long crooked river; the place of the straight river. and their drainage areas west of the Susquehanna River Major carbonate The Piedmont physiographic The study unit, • We have three rivers (West Branch, North Branch and the Mainstem) that are ecologically different. Come and support the Lower Susquehanna Riverkeeper Association by enjoying an afternoon of painting and feel free to bring your favorite wine to sip. summer. (52,000), Lancaster (56,000), York (42,000), Lebanon (24,800), Basin size: 8.24 sq mi (21.3 km 2) Tenmile Run (also known as Ten Mile Run or Ten-mile Run) is a tributary of the Susquehanna River in eastern Columbia County, Pennsylvania, in the United States. In 2005, American Rivers named the Susquehanna River America’s Most Endangered River. Every drop passes through the Lower Susquehanna Subbasin. basin study will be formed in 1991. aquifers. Most of the Susquehanna River drainage basin experienced drought conditions during the second half of the year, particularly areas of the watershed upstream of Conewago Falls. Long periods of extreme cold or heat are infrequent. Flash Flood in the Susquehanna River Basin - January 1996; Flood Summary - June 2006; Susquehanna Flood Forecast and Warning System; Tropical Storm Agnes in the Susquehanna River Basin - June 1972; Regulatory. Weather.gov > Middle Atlantic RFC > Lower Main Stem Susquehanna River Basin Stages . The Susquehanna River is a major river located in the northeastern and mid-Atlantic United States. The Year-1 study of more than 100 sites throughout the entire Lower Susquehanna Subbasin was conducted from June-November 2005 … River • We lack a method to adequately assess the health of a river like the Susquehanna. Note the extensive areas in pink. 1900s, the lower Susquehanna River has been harnessed by four large hydroelectric dams. The 530 community water systems operating in the lower Susquehanna River … Raystown Lake, which is maintained for The Lower Susquehanna River Watershed Assessment. HEC-RAS Sediment Transport Simulation of Three Reservoirs in the Lower Susquehanna River Basin, Pennsylvania and Maryland Michael Langland, Hydrologist, US Geological Survey, Pennsylvania Water Science Center, New Cumberland, PA, [email protected] Abstract The U.S. Environmental Protection Agency (USEPA) recently (2010) listed the nation’s largest estuary, the Chesapeake Bay, … Tributaries: Juniata River, Little Juniata, Codorus, Conestoga, Conodoguinet, Swatara, Conewago, Penn’s, and Sherman’s Creeks. The Susquehanna River forms from … and Altoona (52,000). of the basin to 25 inches in the higher elevations. Since their construction, the reservoirs behind the three dams along the lower Susquehanna River (Holtwood, Safe Harbor, and Conowingo) have historically acted as effective traps for a portion of pollution from the Susquehanna River, and the nutrients that are often attached, thereby reducing the amount of sand, silt, nitrogen and phosphorus entering the Chesapeake Bay. The Susquehanna River is the largest tributary to Chesapeake Bay and transports about one-half of … WREN August 2012 Profile – Water Suppliers Give Thumbs Up to Partnership in Lower Susquehanna River Basin Page 2 region for safe drinking water.Combine the large population and many other factors impacting the lower Susquehanna region, and you have a lot of activities with the potential to contaminate water. The Lower Susquehanna River Watershed Assessment Final Appendices 39.6 MB; Appendices. By area, t… The Commission is preparing to revise its Comprehensive Plan for the Water Resources of the Susquehanna River Basin, due in 2013. sandstone, and limestone of Paleozoic age that forms steep of the study-unit investigations will have a local liaison committee Susquehanna River at Conowingo Dam, September 9, 2004. Dairy, cattle, chicken, egg, hog, fruit, feed, and vegetable crop production can all be found within the basin. A lack of significant rainfall resulted in low river flows throughout late summer and much of the autumn. and S.A. Hoffman, 1991. Smith’s parley with the Susquehannock chiefs took place on the island because that was where their tribe had traditionally come to trade with the Tockwogh. The quality and quantity of waters from the Susquehanna and its tributaries directly affect the Bay’s health and productivity. [Michael J … The average streamflow of the Susquehanna River at Marietta, Pa., was 23,690 million gallons per day from 1931 to 1989. Lower Susquehanna River Basin Study Unit, NAWQA; USGS Drought Watch - U.S Map of Drought and Low Flow Conditions; USGS WaterWatch - Real-time Streamflow Map for the Mid Atlantic Region- HUC 02; USGS WaterWatch - Real-time Floods and High Flow Conditions Map for the Mid Atlantic Region - HUC 02; USGS GIS Spatial Data Sets Available on the WRD NSDI Node ; USGS Water Use … It drains into the Chesapeake Bay. The average annual temperature for the area is about 50 degrees January 1996 the river had flows over 900,000 cfs and was the second largest flood event since Hurricane Agnes in 1972. Bay at Havre de Grace, Md. The mainstem of the Susquehanna River begins in southern New York state, flows through … Reservoirs, Lower Susquehanna River Basin, Pennsylvania and Maryland 1900–2012. In contrast, the most downstream sub-basin, SB7 (Lower Susquehanna River below Marietta), shows negative values that reflect net accumulations of N, P, and SS, as expected for this reservoir-dominated sub-basin . Unfortunately, historical abundance was severely impacted by human activities, mainly dam building. Water Quality in the Lower Susquehanna River Basin, Pennsylvania and Maryland, 1992-95 - This online report provides a summary of the Lower Susqehanna River Basin project; Archived Information. Mean annual precipitation ranges from 38 to 44 inches. Susquehanna River Basin Commission Report by Ellyn Campbell Supervisor, Monitoring and Assessment A Water Quality and Biological Assessment April - July 2011. Breen, R.A. Hainly, Made up of representatives from governments in three states and the U.S. Army Corps of Engineers, the agency is required to issue permits for a range of purposes—including both drinking water supplies and industries like gas drilling. About The Piedmont The PHMC has led many archeological investigations of the several Susquehannock towns concentrated in Lancaster and York Counties.2 The Susquehanna Greenway Partnership (SGP) is a 500 mile corridor that links the natural, cultural, historic, and recreational … organic chemicals. Major industries in the area include Hydrologic events and surface-water resources: U.S. WREN August 2012 Profile – Water Suppliers Give Thumbs Up to Partnership in Lower Susquehanna River Basin Page 2 region for safe drinking water.Combine the large population and many other factors impacting the lower Susquehanna region, and you have a lot of activities with the potential to contaminate water. Description of Study Area The Lower Susquehanna River Basin study unit drains 9,200 mi2 (square miles), extending from Sunbury, Pa., downstream to the Chesapeake Bay, Md., and also includes 150 mi2 of streams in Chester and Cecil Counties where streams This dubious ‘honor’ was applied due to the rush to develop shale gas reserves with limited and myopic consideration of impacts to clean water, rivers, and community health. Changes in Sediment and Nutrient Storage in Three Reservoirs in the Lower Susquehanna River Basin and Implications for the Chesapeake Bay By Michael J. Langland Importance of the Susquehanna River and Its Reservoir System to the Chesapeake Bay The Susquehanna River contributes nearly 50 percent of the freshwater discharge to the Chesapeake Bay in a year of normal or average … study under the full-scale implementation plan. conditions for a large part of the Nation's water resources, LIFE IN THE LOWER SUSQUEHANNA RIVER WATERSHED. There are over 3,000 dams in Pennsylvania and many lie within the Susquehanna River Basin. 2325, p. 429-436. runoff results from snowmelt and rainfall in spring and early and explain the major factors that affect water-quality conditions In 1991, the U.S. Geological Survey (USGS) began to Susquehanna River Basin's Early Warning System; Lower Susquehanna River Source Water Protection Partnership; Flooding. million gallons per day from 1899 to 1989. is underlain by crystalline rocks, lies within the lower basin. U.S. Department of the Interior U.S. Geological Survey. units are hydrologic systems that include parts of most major 43% of the Chesapeake Bay Watershed’s 64,000 square miles; 46% of the state of Pennsylvania, 20,900 square miles; less than 1% of Maryland with 300 square miles. The Susquehanna River Watershed is the largest watershed in the United States that drains into the Atlantic Ocean, and the largest east of the Mississippi. The U.S. Geological Survey (USGS) has conducted numerous sediment transport studies in the Susquehanna River and in particular in three reservoirs in the Lower Susquehanna River Basin to determine sediment transport rates over the past century and to document changes in storage capacity. River Observations and Forecasts. The Susquehanna River drains about 27,000 square miles More This file was created by dissolving the wshed24K dataset into the major watersheds. Water use in the lower basin for public supply totaled about The average annual temperature for the area is about 50 degrees Fahrenheit. If we ever get a storm like Agnes in 1972, mark my words the chesapeake Bay is dead from scour occurring at the dam and all the other dams upriver in addition to what is already coming down. The Susquehanna River flows through three consecutive mountains and ridges separated by valleys. Most of the State and local level, and will form the foundation on which lower Susquehanna River basin and the Chesapeake Bay. and ground-water resources: U.S. Geological Survey Water-Supply Paper OK The 60 study The Susquehanna River Basin is the second largest - next to the Ohio River Basin - east of the Mississippi River. Currently, the main sources of this mitigation water are two U.S. Army Corps of Engineers reservoirs in northern Pennsylvania and New York and treated discharges of water from abandoned coal mines. The U.S. Geological Survey (USGS) has conducted numerous sediment transport studies in the Susquehanna River and in particular in three reservoirs in the Lower Susquehanna River Basin to determine sediment transport rates over the past century and to … province. The study-unit areas range from Lower Susquehanna River Basin study unit were sampled for VOC's in shallow ground water. sulfur compounds and trace metals in the lower Susquehanna Lower Susquehanna River (basin code 02-12-02-01) was identified on the State’s list of WQLSs as impaired by nutrients (1996 listing), sediments (1996 listing), cadmium (Cd) (1996 listing), polychlorinated biphenyls (PCBs) in fish tissue (2002 listing) and evidence of biological impacts (2002 listing). Crystalline-rock aquifers are restricted to the southernmost parts Chemung. Pesticide concentrations in the Susquehanna River at Harrisburg, 1994-95, were generally less than (<) 1 microgram per liter. physiographic province and the northernmost Piedmont. Without young eels migrating into the river, the population subsequently declined and was nearly extirpated from the Susquehanna River basin. Long periods of extreme cold or heat are infrequent. 27,500 square miles in New York, Pennsylvania, and Maryland. This will be a BYOB event. Cover. 399 million gallons per day on September 26, 1932. Sediment transport and capacity change in three reservoirs, lower Susquehanna River basin, Pennsylvania and Maryland, 1900-2012. The Susquehanna River Basin Commission (SRBC) completed a water quality survey in the Yellow Breeches Creek Watershed from February-November 2006 as part of the Year-2 small watershed study in the Lower Susquehanna River Subbasin (Figure 1). River rose from 7ft to over 22ft in just 14 hours. In 2011, American Rivers named the Susquehanna River America’s Most Endangered River for a SECOND time. Over $600M in damages throughout the basin. Created in September 2011, the LSRWA team is a group of experts and scientists from federal and state agencies whose purpose is to estimate and evaluate the quantities of sediment (and associated nutrients) flowing downstream to the system of hydroelectric dams located on the Susquehanna River. Penn State Master Watershed Stewards, Lower Susquehanna & Penn State... Master Watershed Stewards, York County are … SUSQUEHANNA RIVER BASIN: 7 -- West Branch Susquehanna River Water Trail : 240 miles — Cherry Tree to Sunbury: Trail Sponsor Susquehana Greenway Partnership: Related Public Notice: Related non-profit sites Susquehanna River Birding and Wildlife Trail: 8 -- Middle Susquehanna River Water Trail : 51 miles — Sunbury to Harrisburg Trail guide Trail map (Halifax to Harrisburg only) Detail … issues of regional and local interest; identification of sources GIS Dataset Title: Geology by Rock Type, Susquehanna River Basin: Dataset Description: Polygon dataset depicting geology by rock type, hydrostratigraphic terrain and lithology for the entire Susquehanna River Basin. and Conowingo--before reaching the Chesapeake Bay. If you live in the lower Susquehanna River drainage basin, you know why—rain—record setting rain. nearly 20 million gallons per day; 140 million gallons per day Stream Monitoring in the Lower Susquehanna Subbasin In Spring and Summer 2017, the Susquehanna River Basin Commission (SRBC) visited 47 sites on streams within the Lower Susquehanna Subbasin to evaluate water chemistry, available habitat, and the health of the stream macroinvertebrate communities. 25 percent of all fish biomass in the Susquehanna River basin. Over $600M in damages throughout the basin. Middle Susquehanna. was 23,690 million gallons per day from 1931 to 1989. At 444 miles long, it is the longest river on the East Coast of the United States. Contamination of surface- and ground-water resources by The Upper/Middle Susquehanna Region contains the largest sum of headwaters supplying the Susquehanna River Basin. 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