Data

Estimated Use of Water in the United States County-Level Data for 2015

water-use estimates for 2015, aggregated to county levels

MD-DE-DC Groundwater Capabilities

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Hydrologic data collection, processing, analysis, dissemination, and archiving are major parts of the MD-DE-DC Water Science Center program. Much of the data are available on a near-real-time basis by satellite telemetry.

The data collected and the techniques used by USGS scientists should conform to or reference national and international standards and protocols...

MD Water Data

Explore real-time streamflow, groundwater, and water-quality conditions and access data for Maryland with our new interactive map application. This application offers data displays on multiple device platforms with various basemap options.

See MD Summary

DE Water Data

Explore real-time streamflow, groundwater, and water-quality conditions and access data for Delaware with our new interactive map application. This application offers data displays on multiple device platforms with various basemap options.

See DE Summary

DC Water Data

Explore real-time streamflow, groundwater, and water-quality conditions and access data for DC with our new interactive map application. This application offers data displays on multiple device platforms with various basemap options.

See DC Summary

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October 20, 2017

itrogen and phosphorus from fertilizer and manure in the Chesapeake Bay watershed, 1950-2012

This dataset contains four tables of estimates of the yearly sum of nitrogen and phosphorus inputs from fertilizer applications and from manure applications in selected watersheds in Chesapeake Bay drainage basin from 1950 to 2012. For the fertilizer data, county-level loads were used from three published sources. Data from 1950 to 1985 are from Alexander and Smith (1990). Data for the year 1986 a

Chesapeake Bay Activities, Maryland-Delaware-D.C. Water Science Center

September 25, 2017

Animal Best Management Practice by Chesapeake Bay Watershed Region From 1985 to 2014

This metadata record covers 18 comma delimited files that support the USGS Scientific Investigations Report Manure and Fertilizer Inputs to Land in the Chesapeake Bay Watershed, 1950-2014 by Jennifer Keisman, Olivia Devereux, Andrew LaMotte, and Andrew Sekellick. The data were created by running scenarios through the Chesapeake Bay Program Partnership Phase 5.3.2 Watershed Model for years between

Chesapeake Bay Activities, Maryland-Delaware-D.C. Water Science Center

February 14, 2017

Bootstrap-estimated land-to-water coefficients from the CBTN_v4 SPARROW model

This file contains 200 sets of bootstrap-estimated land-to-water coefficients from the CBTN_v4 SPARROW model, which is documented in USGS Scientific Investigations Report 2011-5167. The coefficients were produced as part of CBTN_v4 model calibration to provide information about the uncertainty in model estimates.

Maryland-Delaware-D.C. Water Science Center

Surface-Water Data for Delaware

Real-time, daily, peak-flow, field measurements, and statistics of current and historical data that describe stream levels, streamflow (discharge), reservoir and lake levels, surface-water quality, and rainfall in Maryland.

Maryland-Delaware-D.C. Water Science Center

Groundwater Data for Delaware

Data from wells, springs, and other groundwater sources in Delaware; well location data includes information such as latitude and longitude, well depth, and aquifer. Groundwater level data are collected and stored as either discrete field-water-level measurements or as continuous time-series data from automated recorders.

Maryland-Delaware-D.C. Water Science Center

Water Quality Data for Maryland

Chemical, physical, and biological properties of water, sediment from Maryland, Delaware, and Washington DC sources. Water-quality data are collected as either discrete field measurements or as continuous time-series data from automated recorders that continuously record physical and chemical characteristics including pH, specific conductance, temperature, and dissolved oxygen.

Maryland-Delaware-D.C. Water Science Center

Groundwater Data for Maryland

Data from wells, springs, and other groundwater sources in Maryland; well location data includes information such as latitude and longitude, well depth, and aquifer. Groundwater level data are collected and stored as either discrete field-water-level measurements or as continuous time-series data from automated recorders.

Maryland-Delaware-D.C. Water Science Center

Surface-Water Data for Maryland

Maryland-Delaware-D.C. Water Science Center

August 8, 2016

County Boundaries for Selected Items from the Census of Agriculture, 1950-2012 (COA_STCOFIPS)

This polygon shapefile provides county or county-equivalent boundaries for the conterminous United States and was created specifically for use with the data tables published as Selected Items from the Census of Agriculture for the Conterminous United States, 1950-2012 (LaMotte, 2015). This data layer is a modified version of Historic Counties for the 2000 Census of Population and Housing produced

Maryland-Delaware-D.C. Water Science Center

June 24, 2016

Annual Winter-Spring Nitrogen Loadings for the Susquehanna and Potomac Rivers, 1985 to 2016

Stations Analyzed are 01578310 - SUSQUEHANNA RIVER AT CONOWINGO, MD and 01646580 - POTOMAC RIVER AT CHAIN BRIDGE NEAR WASHINGTON, DC. Spring nitrogen loads as measured at the Susquehanna River at Conowingo Maryland and Potomac River at Washington, D.C. have been determined to be an effective indicator of summer anoxic and hypoxic volume in Chesapeake Bay. The U.S. Geological Survey (USGS) provide

Maryland-Delaware-D.C. Water Science Center

May 18, 2016

Thickness of the Surficial Aquifer, Delmarva Peninsula, Maryland and Delaware

This map is a digital map of the thickness of the surficial unconfined aquifer and was produced to improve understanding of the hydrologic system and the potential for transport of soluble nutrients and other chemicals from groundwater to streams in the Maryland and Delaware portions of the Delmarva Peninsula. The map is intended to be used in conjunction with other environmental coverages (such

Maryland-Delaware-D.C. Water Science Center