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Problem The ground-water flow system underlying the Manhasset Neck Peninsula, which provides potable water to the local population, consists of a complex assemblage of Pleistocene- and Cretaceous-age sediments that form five aquifers and at least two confining units. Recent hydrogeologic mapping in Manhasset Neck indicates significant glacial erosion of the Magothy aquifer, Raritan Clay, and Lloyd aquifer, and several gaps in the confining units that overlie the North Shore and Lloyd aquifers. Five areas of salt-water intrusion have been delineated, two of which are considered active. Several public-supply wells on the Manhasset Neck Peninsula have been shut down in the past as a result of saltwater intrusion....
Categories: Data, Project; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Complete, Completed, Cooperative Water Program, GW Model, GW Model, All tags...
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Problem - The entire Tug Hill glacial aquifer is a 47-mile-long, crescent-shaped mixture of glacial deposits of predominantly sand and gravel on the western side of the Tug Hill Plateau in Jefferson, Oswego, and Oneida Counties in north central New York. The Tug Hill aquifer can be divided into three parts (northern, central, and southern) based on geohydrological setting, depositional history, and type of glacial deposits (fig. 1). In this study, the name “Tug Hill glacial aquifer” refers only to the 29-mi-long northern and central parts of the Tug Hill aquifer. (The southern part was not included in this investigation.) For this study, the division between the northern and central parts of the aquifer was placed...
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Problem - The New York State Departments of Environmental Conservation (NYSDEC) and Health (NYSDOH) are concerned about Problem - The New York State Departments of Environmental Conservation (NYSDEC) and Health (NYSDOH) are concerned about ground-water contamination in the carbonate-bedrock aquifers, especially relating to the inadvertent introduction of volatile organic compounds (VOCs) and manure to these aquifers. Groundwater can flow very quickly with minimal filtration or adsorption through solution-widened fractures in carbonate-bedrock aquifers. Therefore, large amounts of water and associated contaminants can move long distances, sometimes in short periods of time, and affect large areas. If these underground...
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Problem – Flooding is an annual problem along Egypt Creek in Dryden. Increased runoff from expanding development, sediment clogged channels, and undersized culverts that cannot convey increased flows contribute to the problem. Flood maps for extreme floods are available through the effective FEMA flood insurance study (FEMA, 1978), but these maps, which became effective in 1979, are considered no longer valid by the Village of Dryden owing to development in the basin, which presumably has increased runoff and, in at least one instance, encroached on the floodplain. In addition, similar data for lower, intermediate, and higher floods are non-existent. Emergency responders and the public would benefit from a series...
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Background Every day, the New York City Department of Environmental Protection (DEP) supplies more than one billion gallons of drinking water to more than nine million people. To do this, the DEP maintains an extensive network of reservoirs and aqueducts. A major part of this system, the West of Hudson (WOH) network, in the Delaware and Hudson River drainages, includes six reservoirs (fig. 1) – Ashokan, Cannonsville, Neversink, Pepacton, Rondout, and Schoharie – which were constructed from the early 1900s to the 1960s and have an estimated combined storage capacity of more than 460 billion gallons. Problem and Objective The daily and seasonal management of the WOH reservoirs by DEP depends on accurate bathymetric...
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Problem Long Island’s sole-source aquifer system, which includes the Lloyd, Magothy, Jameco, and upper glacial aquifers, supplies groundwater to over 2.8 million people. As a coastal aquifer system, it is susceptible to saltwater intrusion. Past pumpage and sewering (fig. 1) resulted in increased salinity in most aquifers in all counties (Buxton and Shernoff, 1999; Misut and others, 2004; Misut and Aphale, 2014). Simulation of drought has predicted increasing salinity in the lower part of the glacial aquifer of the North Fork of Suffolk County (Misut and others, 2004). In addition, simulation of future well pumpage in Queens County by the U.S. Geological Survey (USGS) has predicted increasing salinity in the Magothy...
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Introduction The City of Oneonta and surrounding area is the major population center in Otsego County, N.Y. and home to two colleges (SUNY Oneonta and Hartwick College). The public water supply draws on both surface-water and groundwater sources and serves 15,954 people in the City of Oneonta and parts of the surrounding Town of Oneonta (City of Oneonta, 2013). The remaining population uses domestic wells for water supply. The City is located in a section of Susquehanna River valley that includes confluences with three other major valleys: those of Charlotte Creek, Schenevus Creek, and Otego Creek. The study area covers 112 mi2 and includes the lower 2 to 5 miles of each of these valleys. The valley-fill deposits...
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Introduction Public-water systems at Springville and Yorkshire/Delavan, N.Y. along Cattaraugus Creek draw from local groundwater resources and serve about 5,500 people (U.S. EPA SDWIS database). The remainder of the population obtains water from domestic wells, many of them completed in glacial aquifers. A Cattaraugus Creek tributary valley (Buttermilk Creek) to the south is the site of the West Valley low-level radioactive waste burial site (part of the Western New York Nuclear Service Center). Numerous investigations of glacial geology and hydrogeology have been performed at this site (for example, Prudic and Randall (1977), LaFleur (1980), and Prudic (1986)) and glacial mapping has included the surrounding area...
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Background Since 1980 the U.S. Geological Survey has conducted a Detailed Aquifer Mapping Program in upstate New York, first in cooperation with the New York State Department of Health (NYSDOH), and later in cooperation with the New York State Department of Environmental Conservation (NYSDEC), Division of Water. The objective of this program is to define the hydrogeology of important stratified-drift aquifers in upstate New York, and to present the information as individual sets of maps at a 1:24,000 scale. Each published report from this program describes the hydrogeology of a specific aquifer or section of aquifer, and depicts selected hydrogeologic characteristics. These reports form the foundation of NYSDEC's...
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PROBLEM The valley-fill aquifers in the West Branch Cayuga Inlet and Fish Kill valleys (designated as aquifer 15, fig.1), within the Town of Newfield, were mapped by Miller (2000) and identified as one of 17 unconsolidated aquifers in Tompkins County that need to be studied in more detail. The valley-fill in the West Branch Cayuga Inlet and Fish Kill valleys contain a heterogeneous mix of glacial deposits and recent alluvium under mostly unconfined conditions, but may they be under confined conditions in some places. The valley-fill deposits are sources of water for the Village of Newfield, homeowners, farms, and small businesses in these valleys. The Village of Newfield has recently been searching for another location...
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Problem - Increasing development within the Shenandoah Valley in recent years has placed additional demands on the region’s water resources. The sedimentary rocks in the Valley have been compressed and folded by tectonic forces to form a 5-km deep basin. Ground water, a principal component of the available water supply, flows through fractures in the sedimentary and crystalline rocks that underlie the Valley. Bedding fractures in the rocks are angled downward along the dip of the folds, allowing ground water to penetrate deeply below land surface—fresh water is obtained from wells over 800 ft deep in the Valley. Objectives - Develop a ground-water-flow model to simulate movement of ground water and estimate the...
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Introduction Detailed mapping of the glacial aquifer within the Ramapo River and Woodbury Creek Valley in Eastern Orange County is the latest study in the cooperative Detailed Aquifer Mapping Program between the US Geological Survey (USGS) and the New York State Department of Environmental Conservation (NYSDEC). The aim of the program is to map glacial aquifers in New York State at a scale of 1:24,000. This information is used by NYSDEC Division of Water and others for delineation of groundwater contributing areas, assessing potential threats to aquifers from both point and non-point sources, responding to contamination from spills or leaks from underground storage facilities, and providing information to...
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Problem Nutrients and sediment are generated by and removed from agricultural and urban areas, transported in streams, and ultimately delivered to the Great Lakes. The nutrients stimulate excessive algal growth and potentially cause noxious blooms and hypoxia. Sediment increases turbidity near stream mouths and, when deposited, can smother bottom-dwelling animals, drive fish from affected areas, and decrease water depth in navigation channels. An understanding of the hydrologic and water-quality processes that generate these loads will assist water-resources managers in making informed decisions regarding prevention or mitigation of these problems. A precipitation-runoff watershed model is a tool, which can...
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Problem - USGS regional framework characterizations have been used effectively in many studies. However, lack of framework accuracy, particularly at smaller scales, continues to cause problems that may involve: (1) sizing of pumps and other aspects of wellfield design and maintenance, (2) projection of local-scale water-level changes, and (3) projection of interactions with other hydrologic stresses. The objective of this study is to improve framework representations by implementing continuous-recording observation wells at SCWA wellfields, in concert with the SCWA record of pumping and other regional USGS data. As necessary, the implications of framework revisions on such topics as safe aquifer yield, source-area...
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Background The proposed study will examine any existing data from the monitoring wells, weather station, and flow through the storm sewer system (supplied by Buffalo Sewer Authority) to determine the dynamics of the system during storm events. Further analysis using all available information is needed to fully understand the relationship of events to the implementation of Green Infrastructure stormwater-control measure effectiveness. Questions to be addressed include: How do pipe flows and groundwater levels respond to storms? Can the data be used to quantify water-budget components at the site? To what extent can the effect of the Green Infrastructure in reducing stormwater volumes and peaks be quantified? Based...
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Problem The City of Ithaca, Tompkins County, N.Y., is in the process of developing a flood management plan for the streams that flow through the City. Flooding in the City is an annual problem caused by a variety of distinct and sometimes interconnected reasons. Flooding often is a result of snowmelt and rain during the winter and spring. Slow ice-melt and breakup can lead to ice jams and subsequent flooding. Flash floods are produced by summer thunderstorms. All of these flood types are compounded by two factors: the storm-sewer system in the City and the elevation of Cayuga Lake. The storm sewers drain to the nearby streams at points below the tops of the streambanks. Because the streamward ends of the storm sewers...
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Background / Problem Hurricane Irene Figure 1 shows the declared counties for Hurricane Irene (FEMA) Five to ten inches of rain from Hurricane Irene produced widespread moderate to major flooding throughout eastern New York August 28-30. Highest rainfall totals occurred in the Catskill Mountains of southeastern New York where over 18-inches of rain was reported at Maplecrest, NY. Record water-surface elevations and streamflows were recorded at 60 USGS streamgages and 2 lake/reservoirs. Provisional recurrence intervals of peak flows exceeded the 100-yr flood (1 percent annual chance flood) at 25 USGS streamgages. Provisional recurrence intervals of peak flows exceeded the 500-yr flood (0.2 percent annual chance...
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Problem Statement More than nine million people rely on the New York City Water-Supply System for their daily-drinking water needs. Approximately 40 percent of this water comes from the Schoharie and Ashokan Reservoirs (fig. 1). This water is transported from the Catskill Area to New York City through Esopus Creek and a series of man-made tunnels and aqueducts built starting in the early 1900s (fig. 1). The U.S. Geological Survey (USGS) has been measuring streamflow continuously in the Upper and Lower Esopus Creeks for many decades. Specifically, streamflow has been measured in the Upper Esopus Creek at Coldbrook (station number 01362500) for about 80 years and in the Lower Esopus Creek at Mount Marion (station...
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Problem - Several supply wells in Oswego County were evaluated by the USGS in 1999 by using stable oxygen and hydrogen isotopes and chlorofluorocarbon (CFC) age dating techniques. For two municipal well sites (the Villages of Sandy Creek and Lacona, and the Village of Pulaski) that tap a shallow, unconfined aquifer (typically 20-50 ft thick) there were significant discrepancies between ground-water recharge ages determined by chemical data and those determined by ground-water-flow models developed by independent studies. The significant discrepancies between the times of travel of ground water as determined by numerical ground-water-flow modeling and geochemical dating techniques in Oswego County need to be understood...
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Background The Shinnecock Nation is located on the south fork of eastern Long Island adjacent to the town of Southampton to the east, and the hamlet of Shinnecock Hills to the west, in Suffolk County, NY. Shinnecock Nation tribal lands encompass approximately 1.2 square miles and are bounded to the east and west by tidal creeks, and to the south by Shinnecock Bay. The Shinnecock Nation has a population of 662 residents who live in 256 housing units (U.S. Census, 2016). The Shinnecock Nation became the 565th federally recognized Tribe by the United States government in October 2010. (Shinnecock Nation, 2014). Shinnecock Nation tribal lands are situated in a coastal environment where bay and wetland health are...
Categories: Data, Project; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Contaminants, Emerging, Contaminants, Emerging, Contaminants, Microbial, Contaminants, Microbial, Contaminants, Natural, All tags...


map background search result map search result map Hydrogeologic Recharge Settings of the Carbonate-Bedrock Aquifer in Genesee County, Western New York Ground-water-flow model of the Shenandoah Valley, Virginia and West Virginia Detailed Aquifer Mapping in the Greene-Kattelville area of New York Hydrologic Assessment of the Shallow Groundwater-Flow System Beneath the Shinnecock Nation Tribal Lands, Suffolk County, New York Bathymetry of New York City's West of Hudson Reservoirs Technical Pump-Test Evaluation of Suffolk County Aquifers Simulation of Streamflow and Water Quality by a Precipitation-Runoff Model of the Tonawanda Creek Basin in Western New York Detailed Aquifer Mapping in Eastern Orange County –The Ramapo River –Woodbury Creek Valley Estimated Non-reservoir Streamflows of Esopus Creek at Coldbrook and Mount Marion, New York Geohydrology of the Valley-Fill Aquifer in the West Branch Cayuga Inlet and Fish Kill Valleys, Town of Newfield, Tompkins County, New York Floods of 2011 in New York Development of a Ground-Water Flow Model for the Manhasset Neck Peninsula, Nassau County, New York Hydrogeology of Two Areas of the Tug Hill Glacial-drift Aquifer, Oswego County, New York Geohydrology and Water Quality of the Northern and Central Parts of the Tug Hill Glacial Aquifer, Jefferson and Oswego Counties, North Central New York Flood-inundation mapping of Egypt Creek, Dryden, Tompkins County Flood-Inundation Maps for Four Stream Reaches, Ithaca, Tompkins County, New York Delineation of the Hydrogeologic Framework and Saltwater-Freshwater Interface and Determination of Water-Supply Sustainability of Long Island, New York Assessment of stormwater control measures at the Niagara River Greenway Project, Buffalo, New York Detailed Aquifer Mapping of the Oneonta Area Otsego and Delaware Counties, New York DETAILED AQUIFER MAPPING OF THE SPRINGVILLE, N.Y. AREA Erie, Cattaraugus, and Wyoming Counties, New York Simulation of Streamflow and Water Quality by a Precipitation-Runoff Model of the Tonawanda Creek Basin in Western New York Assessment of stormwater control measures at the Niagara River Greenway Project, Buffalo, New York Flood-Inundation Maps for Four Stream Reaches, Ithaca, Tompkins County, New York Flood-inundation mapping of Egypt Creek, Dryden, Tompkins County Geohydrology of the Valley-Fill Aquifer in the West Branch Cayuga Inlet and Fish Kill Valleys, Town of Newfield, Tompkins County, New York Development of a Ground-Water Flow Model for the Manhasset Neck Peninsula, Nassau County, New York Detailed Aquifer Mapping of the Oneonta Area Otsego and Delaware Counties, New York Detailed Aquifer Mapping in the Greene-Kattelville area of New York DETAILED AQUIFER MAPPING OF THE SPRINGVILLE, N.Y. AREA Erie, Cattaraugus, and Wyoming Counties, New York Detailed Aquifer Mapping in Eastern Orange County –The Ramapo River –Woodbury Creek Valley Hydrogeologic Recharge Settings of the Carbonate-Bedrock Aquifer in Genesee County, Western New York Estimated Non-reservoir Streamflows of Esopus Creek at Coldbrook and Mount Marion, New York Geohydrology and Water Quality of the Northern and Central Parts of the Tug Hill Glacial Aquifer, Jefferson and Oswego Counties, North Central New York Hydrogeology of Two Areas of the Tug Hill Glacial-drift Aquifer, Oswego County, New York Bathymetry of New York City's West of Hudson Reservoirs Technical Pump-Test Evaluation of Suffolk County Aquifers Delineation of the Hydrogeologic Framework and Saltwater-Freshwater Interface and Determination of Water-Supply Sustainability of Long Island, New York Ground-water-flow model of the Shenandoah Valley, Virginia and West Virginia Floods of 2011 in New York