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  2. Multilevel groundwater monitoring systems - Wikipedia

    en.wikipedia.org/wiki/Multilevel_groundwater...

    The Solinst Waterloo Multilevel groundwater monitoring system is a modular MLS designed to collect groundwater data from multiple depths within a single borehole via a series of monitoring ports positioned at specific intervals along 2-inch ID Schedule 80 PVC casing. The various monitoring ports can be connected to a combination of: sampling ...

  3. List of GIS data sources - Wikipedia

    en.wikipedia.org/wiki/List_of_GIS_data_sources

    United States Department of the Interior National Park Service NPScape is a landscape dynamics monitoring project that provides landscape-level data, tools, and evaluations for natural resource management, planning, and interpretation. [11] Government ArcGIS server addresses: Curated list of 3,500+ ArcGIS server addresses from federal to local.

  4. Hydrologic unit system (United States) - Wikipedia

    en.wikipedia.org/wiki/Hydrologic_unit_system...

    Therefore, older data using "cataloging units" may differ from newer, higher resolution data using "subbasins". [5] Top-level 2-digit region hydrologic unit boundaries: 01 New England, 02 Mid Atlantic, 03 South Atlantic Gulf, 04 Great Lakes, 05 Ohio, 06 Tennessee, 07 Upper Mississippi, 08 Lower Mississippi, 09 Souris-Red-Rainy, 10 Missouri, 11 ...

  5. Geographic Names Information System - Wikipedia

    en.wikipedia.org/wiki/Geographic_Names...

    The logo of the United States Geological Survey (USGS) The Geographic Names Information System (GNIS) is a database of name and location information about more than two million physical and cultural features throughout the United States and its territories; as well as the associated states of the Marshall Islands, Federated States of Micronesia, and Palau; and Antarctica.

  6. Borrego Valley groundwater basin - Wikipedia

    en.wikipedia.org/wiki/Borrego_Valley_Groundwater...

    An analysis on historic water quality data from the Borrego Valley Groundwater Basin performed by the U.S. Geological Survey concluded that total dissolved solids (TDS) and nitrate in the upper level of the aquifer exceeded the water-quality thresholds for each given substance (500mg/L and 10 mg/L respectively). [6]

  7. United States Geological Survey - Wikipedia

    en.wikipedia.org/wiki/United_States_Geological...

    The USGS Coastal and Marine Science Center (formerly the USGS Center for Coastal Geology) has three sites, one for the Atlantic Ocean (located in Woods Hole, Massachusetts), one for the Pacific Ocean (located in Santa Cruz, California) and one for the Gulf of Mexico (located on the University of South Florida's St. Petersburg campus). The goal ...

  8. Center for Earth Resources Observation and Science

    en.wikipedia.org/wiki/Center_for_Earth_Resources...

    The Center for Earth Resources Observation and Science (EROS) is a United States Geological Survey data management, systems development, and research field center It serves as the national archive of remotely sensed images of the Earth's land surface acquired by civilian satellites and aircraft.

  9. Groundwater model - Wikipedia

    en.wikipedia.org/wiki/Groundwater_model

    The applicability of a groundwater model to a real situation depends on the accuracy of the input data and the parameters. Determination of these requires considerable study, like collection of hydrological data (rainfall, evapotranspiration, irrigation, drainage) and determination of the parameters mentioned before including pumping tests. As ...