Maryland-Delaware-D.C. Water Science Center

Data and Tools

Filter Total Items: 183
Date published: July 31, 2020

True color aerial imagery from unmanned aerial systems (UAS) flights: Potomac River in Point of Rocks, Maryland on October 24, 2019

These digital images were taken over an area of the Potomac River in Point of Rocks, Maryland using 3DR Solo unmanned aircraft systems (UAS) on October 24, 2019. These images were collected for the purpose of evaluating UAS assessment of river habitat data such as water depth, substrate type, and water clarity. Each UAS was equipped with a Ricoh GRII digital camera for natural color p

Date published: July 31, 2020

Ground control points collected during unmanned aerial systems (UAS) flights: Potomac River in Brunswick Maryland on October 22, 2019

Low-altitude aerial images were taken over an area of the Potomac River in Brunswick, Maryland using 3DR Solo unmanned aircraft systems (UAS) on October 22, 2019. The imagery was collected for the purpose of evaluating UAS assessment of river habitat data such as water depth, substrate type, and water clarity. Some photographs contain black and white targets used as ground control poi

Date published: June 30, 2020

Passive seismic data collected along headwater stream corridors in Shenandoah National Park in 2016 - 2020

In July 2016, July 2019, and March 2020, 318 seismic recordings were acquired at locations within Shenandoah National Park, Virginia, using MOHO Tromino Model TEP-3C three-component seismometers to assess depth to bedrock using the HVSR method. This method requires a measurement of estimate of shear wave velocity, which depends on the regolith sediment composition and density, for

Date published: June 23, 2020

Mean annual no flow, climate and watershed properties for 540 non-perennial USGS gages in the contiguous U.S.

This dataset contains mean-annual metrics quantifying intermittent streamflow, climate, topography, land cover and geology for 540 USGS GAGES-2 watersheds experiencing non-perennial flow.

Date published: June 23, 2020

Annual low flow, climate and watershed properties for 325 USGS gages in and near the Delaware River Basin

This dataset contains annual metrics quantifying low streamflows, climate, topography, land cover and geology for 325 USGS GAGES-2 watersheds within the Delaware River Basin boundary or with watershed centroids within a 25-mile buffer of the Delaware River Basin boundary.

Date published: March 9, 2020

Sub-annual streamflow responses to rainfall and snowmelt inputs in snow-dominated watersheds of the western U.S.

The data presented here contain quasi-event hydrologic response characteristics for quickflow response intervals (QRIs) calculated at 57 USGS GAGES-II reference watersheds in the western US. Each row in the attached csv contains characteristics for an individual QRI at one site. QRI characteristics include duration, antecedent flow, input, input rate,peak flow, potential evapotransp

Date published: March 6, 2020

Contiguous US and Global streamflow gages measuring zero flow

We report the site number and locations of 5798 streamflow gages displaying zero flow for at least one day in their daily records. 4891 of these gages are from the GRDC network, and 906 are USGS gages in the contiguous US. Additionally, provisional data for two USGS gages 1) Rio Puerco near Bernardo, NM (USGS site: 08353000) and 2) Agua Fria River Near Mayer, AZ (USGS site:

Date published: February 19, 2020

Discharge and sediment data for selected tributaries to the Anacostia River, Washington, District of Columbia, 2003-18

Data release consists of five comma delimited text files containing discharge and sediment data for five gaged tributaries to the Anacostia River in Washington, District of Columbia. Data were collected from 2003 through 2018.

Date published: February 18, 2020

Raw Pin Data from Rod Surface-Elevation Table (rSET) Measurements and Water Level Data at Specified Locations along Monks and Swaderick Creeks, Aberdeen Proving Ground, Maryland, 2018-2019

This metadata record contains a shapefile of site locations and 3 tables used to assess wetland elevation change over time and the long-term effects of sea-level rise to vulnerable tidal wetlands along the Edgewood peninsula of Aberdeen Proving Ground, Maryland. Included in the dataset are raw pin measurements of wetland sediment elevation and water levels measured for selected sites along...

Date published: January 10, 2020

Poultry Feeding Operations on the Delaware, Maryland, and Virginia Peninsula from 2016 to 2017

Data release contains two shapefiles related to poultry houses on the Delmarva Peninsula (Delaware, Eastern Shore Maryland and, Eastern Shore Virginia). One dataset is a polygon shapefile representing 6013 poultry houses identified using 2016 and 2017 aerial imagery from the U.S. Department of Agricultures National Aerial Imagery Program (NAIP). The second dataset is a point shapefi

Date published: January 6, 2020

SPARROW model inputs and simulated streamflow, nutrient and suspended-sediment loads in streams of the Northeastern United States, 2012 Base Year

The U.S. Geological Survey's (USGS) SPAtially Referenced Regression On Watershed attributes (SPARROW) model was used to aid in the interpretation of monitoring data and simulate streamflow and water-quality conditions in streams across the Northeast Region of the United States. SPARROW is a hybrid empirical/process-based mass balance model that can be used to estimate the major source

Date published: November 4, 2019

Discrete and high-frequency chloride (Cl) and specific conductance (SC) data sets and Cl-SC regression equations used for analysis of 93 USGS water quality monitoring stations in the eastern United States

High frequency estimated chloride (Cl) and observed specific conductance (SC) data sets, along with response variables derived from those data sets, were used in an analysis to quantify the extent to which deicer applications in winter affect water quality in 93 U.S. Geological Survey water quality monitoring stations across the eastern United States. The analysis was documented in th