Found 39 datasets matching filters.
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This dataset contains estimates of the yearly sum of total nitrogen and total phosphorus (hereafter referred to as nitrogen and phosphorus) inputs from fertilizer applications and from manure...
Search relevance: 1.00 | Views last month: 17 | Published on: 2026-03-03 -
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 modifications to existing...
Search relevance: 1.00 | Views last month: 3 | Published on: 2026-03-03 -
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, from BLRI (Blue Ridge Parkway)...
Search relevance: 1.00 | Views last month: 3 | Published on: 2026-03-03 -
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 slightly-modified version of the...
Search relevance: 1.00 | Views last month: 3 | Published on: 2026-03-03 -
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 Chesapeake Bay non-tidal network (NTN).
Search relevance: 1.00 | Views last month: 3 | Published on: 2026-03-03 -
This dataset provides estimates of annual and seasonal precipitation for selected Chesapeake Bay watersheds. Season 1 is November-February; season 2 is March-June; and season 3 is July-October.
Search relevance: 1.00 | Views last month: 1 | Published on: 2026-03-03 -
The Chesapeake Bay Estuary is the largest estuary in the United States and provides habitats for diverse wildlife and aquatic species, protects communities against flooding, reduces pollution to...
Search relevance: 1.00 | Views last month: 1 | Published on: 2026-03-03 -
This dataset contains watershed means of estimated percent impervious surfaces for three time periods: 1992, 2002, and 2012. Estimates are based on coefficients derived from comparing land use of...
Search relevance: 1.00 | Views last month: 1 | Published on: 2026-03-03 -
This dataset contains values of the Palmer Hydrological Drought Index (PHDI) for annual and seasonal periods from 1985-2012. Values are derived from data based on National Climatic Data Center...
Search relevance: 1.00 | Views last month: 1 | Published on: 2026-03-03 -
U.S. Geological Survey (USGS) and Virginia Institute of Marine Science (VIMS) scientists conducted field data collection efforts during the week of April 8th - 14th, 2018, using a combination of...
Search relevance: 1.00 | Views last month: 1 | Published on: 2026-03-03 -
U.S. Geological Survey (USGS) and Virginia Institute of Marine Science (VIMS) scientists conducted field data collection efforts during June 11th - 16th, 2020, using a combination of remote...
Search relevance: 1.00 | Views last month: 1 | Published on: 2026-03-03 -
Geologic structure and isopach maps were constructed by interpreting over 19,890 trackline kilometers of co-located multichannel boomer, sparker and chirp seismic reflection profiles from the...
Search relevance: 1.00 | Views last month: 0 | Published on: 2026-03-03 -
Land-use estimates of agricultural and developed land for the period 1985-2012 for selected Chesapeake Bay watersheds.
Search relevance: 1.00 | Views last month: 0 | Published on: 2026-03-03 -
The dataset contains estimates for total nitrogen and total phosphorus loads from point sources, combined sewer overflows, wastewater treatment plants that discharge to surface water for selected...
Search relevance: 1.00 | Views last month: 0 | Published on: 2026-03-03 -
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 2024. Data are presented as the sum from...
Search relevance: 1.00 | Views last month: 0 | Published on: 2026-03-03 -
These data provide an accurate high-resolution shoreline compiled from imagery of JAMES RIVER, JAMESTOWN ISLAND TO DANCING POINT, VA . This vector shoreline data is based on an office...
Search relevance: 1.00 | Views last month: 0 | Published on: 2026-01-23 -
Alkenone samples collected during September 2023 from the Farm Road, Rushmere and Pipsico localities on the James River in SE Virginia.
Search relevance: 1.00 | Views last month: 0 | Published on: 2026-03-03 -
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 best management practices...
Search relevance: 1.00 | Views last month: 0 | Published on: 2026-03-03 -
These unprojected (geographic coordinates) 3-Zone Average Annual Salinity Digital Geographies are based on analysis of long-term salinity data for 147 estuaries of the contiguous United States....
Search relevance: 1.00 | Views last month: 0 | Published on: 2026-02-28 -
These data were automated to provide an accurate high-resolution historical shoreline of James River, Southeast Richmond, Virginia suitable as a geographic information system (GIS) data layer. ...
Search relevance: 1.00 | Views last month: 0 | Published on: 2026-01-23
