29 datasets found
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Federal
Detailed geologic mapping geodatabase for the Blue Ridge Parkway in Virginia with station point photographs
Department of the Interior —
The US Geological Survey, in cooperation with the National Park Service, mapped 35 7.5-minute quadrangles, within a 2-mile-wide+ corridor centered on the Parkway,... -
Federal
Nutrient contributions from point sources, combined sewer overflows, and wastewater treatment plants for selected Chesapeake Bay watersheds
Department of the Interior —
The dataset contains estimates for total nitrogen and total phosphorus loads from point sources, combined sewer overflows, wastewater treatment plants that discharge... -
Federal
Chesapeake Bay non-tidal network shapefiles for selected watershed boundaries
Department of the Interior —
This metadata report documents a shapefile of watershed boundaries for 84 selected United States Geological Survey (USGS) water quality stations that are part of the... -
Federal
Thickness of Quaternary seismic stratigraphic units offshore of the Delmarva Peninsula, including Maryland and Virginia state waters
Department of the Interior —
Geologic structure and isopach maps were constructed by interpreting over 19.890 trackline kilometers of co-located multichannel boomer, sparker and chirp seismic... -
Federal
Reservoir storage for selected Chesapeake Bay watersheds
Department of the Interior —
This dataset contains values of normal reservoir storage in units of acre-feet per km2, for three time periods: 1992, 2002, and 2012. Values are derived from a... -
Federal
Shapefiles of hydrogeologic unit extents and top-surface altitude contours used in the revised hydrogeologic framework for the Virginia Coastal Plain Southwest of the James River
Department of the Interior —
A revision to the hydrogeologic framework of the Virginia coastal plain southwest of the James River was developed by USGS during 2019-2021. This revision includes... -
Federal
Static soils, climate, hydrologic, topographic, and geographic characteristics for selected Chesapeake Bay watersheds
Department of the Interior —
This dataset contains values of soils, climate, hydrologic, topographic, and other geographic characteristics such as drainage area. These are considered "static"... -
Federal
Nitrogen and phosphorus from fertilizer and manure for selected Chesapeake Bay watersheds
Department of the Interior —
This dataset contains estimates of the yearly sum of total nitrogen and total phosphorus (hereafter referred to as nitrogen and phosphorus) inputs from fertilizer... -
Federal
Percent impervious surface for selected Chesapeake Bay watersheds
Department of the Interior —
This dataset contains watershed means of estimated percent impervious surfaces for three time periods: 1992, 2002, and 2012. Estimates are based on coefficients... -
Federal
Seasonal precipitation for selected Chesapeake Bay watersheds
Department of the Interior —
This dataset provides estimates of annual and seasonal precipitation for selected Chesapeake Bay watersheds. Season 1 is November-February; season 2 is March-June;... -
Federal
Nitrogen flux estimates in support of Chesapeake Bay Hypoxia and Anoxia forecasts, 1985-2023
Department of the Interior —
Data release includes the U.S. Geological Survey (USGS) estimate of spring nitrogen fluxes summed from nine tributaries to the Chesapeake Bay from 1985 to 2023. Data... -
Federal
Percent of land in agricultural production and developed for selected Chesapeake Bay watersheds
Department of the Interior —
Land-use estimates of agricultural and developed land for the period 1985-2012 for selected Chesapeake Bay watersheds. -
Federal
Annual spring nitrogen fluxes for nine Chesapeake Bay tributary monitoring sites, 1985 to 2020
Department of the Interior —
Data release includes the U.S. Geological Survey (USGS) estimate of spring nitrogen fluxes from nine tributaries to the Chesapeake Bay from 1985 to 2020. Data are... -
Federal
Alkenone temperature estimates from the Miocene and Pliocene of SE Virginia, 2024 field work
Department of the Interior —
Alkenone samples collected during September 2023 from the Farm Road, Rushmere and Pipsico localities on the James River in SE Virginia. -
Federal
Annual estimated effect of best management practice implementation on water quality in the Chesapeake Bay watershed from 1985 to 2014
Department of the Interior —
This metadata record documents a comma-delimited table representing scenario output from the Chesapeake Bay Program Phase 5.3.2 Watershed Model. The annual effect of... -
Federal
Nitrogen flux estimates in support of Chesapeake Bay Hypoxia and Anoxia forecasts, 1985-2021
Department of the Interior —
Data release includes the U.S. Geological Survey (USGS) estimate of spring nitrogen fluxes summed from nine tributaries to the Chesapeake Bay from 1985 to 2021. Data... -
Federal
Estimated effect of best management practice implementation on water quality in the Chesapeake Bay watershed from 1985 to 2014
Department of the Interior —
This metadata record documents 2 comma delimited tables representing output from the Chesapeake Bay Program Phase 5.3.2 Watershed Model. The effect of best management... -
Federal
Implementation of conservation tillage and cover crops in the Chesapeake Bay watershed, 1985 to 2012
Department of the Interior —
Conservation tillage practices and cover crops are used throughout the Chesapeake Bay watershed to reduce soil loss and improve water quality. Implementation of these... -
Federal
Depth to Quaternary regional unconformities offshore of the Delmarva Peninsula, including Maryland and Virginia state waters
Department of the Interior —
Geologic structure and isopach maps were constructed by interpreting over 19,890 trackline kilometers of co-located multichannel boomer, sparker and chirp seismic... -
Federal
Best management practice implementation in the Chesapeake Bay watershed from 1985 to 2014
Department of the Interior —
This metadata record documents 3 sets of comma delimited tables representing the amount of reported best management practice (BMP) implementation within the...
29 datasets found