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This map layer contains the shallowest principal aquifers of the conterminous United States, Hawaii, Puerto Rico, and the U.S. Virgin Islands, portrayed as polygons. The map layer was developed as part of the effort to produce the maps published at 1:2,500,000 in the printed series "Ground Water Atlas of the United States". The published maps contain base and cultural features not included in these data. This is a replacement for the July 1998 map layer called Principal Aquifers of the 48 Conterminous United States.
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This data set represents the extent of the alluvial and glacial aquifers north of the southern-most line of glaciation. Aquifers are shown in the States of Maine, Vermont, New Hampshire, Connecticut, Massachusetts, Rhode Island, New Jersey, New York, Pennsylvania, Ohio, Indiana, Michigan, Wisconsin, Illinois, Minnesota, Iowa, Missouri, Kansas, Nebraska, South Dakota, North Dakota, and Montana. These data delineate the areal extent of the alluvial and glacial aquifers as defined in The Ground Water Atlas of The United States (GWA).
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This map layer shows the locations of wells maintained by the U.S. Geological Survey (USGS) that are used to monitor the effects of droughts and other climate variability on ground-water levels. The Ground-Water Climate Response Network consists of a national network of about 140 wells monitored as part of the Ground-Water Resources Program. It is supplemented by more than 200 wells monitored as part of the Cooperative Water Program that meet the same network criteria, which are: open to a single, known hydrogeologic unit; known well construction that allows good water-level measurements; located in unconfined aquifers or near-surface confined aquifers that respond to climatic fluctuations; minimally affected by...
Categories: Web Site; Tags: Alabama, Alaska, Arizona, Arkansas, California, All tags...
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This image shows national-scale patterns of naturally occurring arsenic in potable ground-water resources of the continental United States. The image was generated from the most recent arsenic measurement available for each of 31,350 wells and springs across the United States. Over 20,000 of the water samples were collected by the U.S. Geological Survey between 1973 and 2001. The remainder of the samples were collected by State agencies and analyzed by comparable laboratory techniques. The data set shows a moving 75th percentile, which can also be described as the maximum arsenic concentration found in 75% of samples within a moving 50 km radius (the median size of a U.S. county). In other words, for any given 50-km-radius...
Water rights in the State of Kansas are complex and dynamic entities that permit their owners the privilege of appropriating water for beneficial use. The amount of information collected on water rights is extensive and increases each year. The Kansas Department of Agriculture, Division of Water Resources (KDA-DWR), currently maintains an Oracle-based RDBMS called the Water Rights Information System (WRIS). The WRIS contains over 70 relational tables that store data on points of diversion (e.g. ground-water wells and surface water intakes), place of use, authorized quantity and rate allocations, historic reported water usage, and a host of other parameters. The ability to extract out information from the WRIS data...


    map background search result map search result map Aquifers of Alluvial and Glacial Origin Principal Aquifers of the 48 Conterminous United States, Hawaii, Puerto Rico, and the U.S. Virgin Islands Ground-Water Climate Response Network Arsenic in Ground Water of the United States Kansas Department of Agriculture, Division of Water Resources (DWR) and Kansas Geological Survey (KGS) Water Information Management and Analysis System (WIMAS) Kansas Department of Agriculture, Division of Water Resources (DWR) and Kansas Geological Survey (KGS) Water Information Management and Analysis System (WIMAS) Aquifers of Alluvial and Glacial Origin Principal Aquifers of the 48 Conterminous United States, Hawaii, Puerto Rico, and the U.S. Virgin Islands Ground-Water Climate Response Network Arsenic in Ground Water of the United States