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Federal
USGS Water-Quality Data for the Nation - National Water Information System (NWIS) recent views
Department of the Interior —
The USGS compiles online access to water-resources data collected at approximately 1.5 million sites in all 50 States, the District of Columbia, Puerto Rico, the... -
Federal
USGS Surface-Water Data for the Nation - National Water Information System (NWIS) recent views
Department of the Interior —
The USGS compiles online access to water-resources data collected at approximately 1.5 million sites in all 50 States, the District of Columbia, Puerto Rico, the... -
Federal
Groundwater depletion in the United States (1900-2008) recent views
Department of the Interior —
A natural consequence of groundwater withdrawals is the removal of water from subsurface storage, but the overall rates and magnitude of groundwater depletion in the... -
Federal
USGS Water Use Data for the Nation - National Water Information System (NWIS) recent views
Department of the Interior —
The U.S. Geological Survey's National Water-Use Information Program is responsible for compiling and disseminating the nation's water-use data. The USGS works in... -
Federal
USGS Groundwater Data for the Nation - National Water Information System (NWIS) recent views
Department of the Interior —
The USGS compiles online access to water-resources data collected at approximately 1.5 million sites in all 50 States, the District of Columbia, Puerto Rico, the... -
Federal
Stable hydrogen and oxygen isotopic compositions of precipitation samples from selected Delaware, Maryland, New Jersey, New York, and Pennsylvania National Atmospheric Deposition Program (NADP) sites recent views
Department of the Interior —
The stable hydrogen (delta 2H) and oxygen (delta 18O) isotopic compositions of more than 6,400 weekly composite samples of precipitation from nine National... -
State
MD iMAP: Maryland Waterbodies - Rivers and Streams (Detailed) recent views
State of Maryland —
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. Line features of rivers and streams (detailed shape) in Maryland. Last... -
State
MD iMAP: Maryland Floodplain - Effective FEMA Floodplain recent views
State of Maryland —
This is a MD iMAP hosted service. Find more information at http://imap.maryland.gov. The Effective Floodplain layer represents the official regulatory floodplain as... -
Federal
Discharge measurements, air temperature, water temperature, and gage height data for select stream monitoring locations across Delmarva Peninsula (2022) recent views
Department of the Interior —
As part of a larger study examining stream conditions and the effect of Best Management Practices in the Chesapeake Bay watershed, thirty small streams on the... -
Federal
Compilation of multi-agency water temperature observations for streams within the Chesapeake Bay watershed recent views
Department of the Interior —
This data release collates stream water temperature observations across the Chesapeake Bay watershed from the USGS National Water Information System (NWIS), Water... -
State
MD iMAP: Maryland Watersheds - Federal Watersheds (HUC 11) recent views
State of Maryland —
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. Hydrologic unit boundaries define the aerial extent of surface water... -
State
MD iMAP: Maryland Wetlands - Wetlands Polygon (Special State Concern) recent views
State of Maryland —
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. In Maryland certain wetlands with rare - threatened - endangered species or... -
State
MD iMAP: Maryland Gauges - Stream Gauge Locations recent views
State of Maryland —
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. AHPS Shapefile - Observations - a shapefile of river and lake observeration... -
State
MD iMAP: Maryland Wetlands - Wetlands Linear (Department of Natural Resources) recent views
State of Maryland —
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. The Maryland Department of Natural resources began updating the National... -
State
MD iMAP: Maryland Shoreline Changes - Transects recent views
State of Maryland —
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. To quantify rates of change (erosion or accretion) along coastal and... -
State
MD iMAP: Maryland Wetlands - Wetlands Polygon (Department of Natural Resources) recent views
State of Maryland —
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. The Maryland Department of Natural resources began updating the National... -
State
MD iMAP: Maryland Wetlands - Wetlands Linear (Special State Concern) recent views
State of Maryland —
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. In Maryland certain wetlands with rare - threatened - endangered species or... -
State
MD iMAP: Maryland Watersheds - 8 Digit Watersheds recent views
State of Maryland —
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. This file (SWSUB8) is a statewide digital watershed file. It depicts the... -
State
MD iMAP: Maryland Blue Infrastructure - Blue Infrastructure Watersheds recent views
State of Maryland —
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. A subset of watersheds created for the Blue Infrastructure Project (BI)... -
Federal
Inundation predictions for vernal pools of the northeastern United States at various seasonal time points under various weather and climate scenarios recent views
Department of the Interior —
This data release includes data-processing scripts, data products, and associated metadata for a study to model the hydrology of several hundred vernal pools (i.e.,...