Maryland-Delaware-D.C. Water Science Center

Data and Tools

Filter Total Items: 203
Date published: April 19, 2021

Visible and near-infrared spectroscopy for sediment samples collected across North-eastern U.S.

This data record contains a CSV file with spectral reflectance (420-2114 nm) for sediment samples collected from each of four source locations (cropland, stream bank, glaciolacustrine, and street dust) located across sites in the Northwestern US during prior studies. Data were collected in a laboratory setting using Spectrecology USB4000-VIS-NIR and NIRQuest512-2.2 spectrometers.

Date published: April 14, 2021

SPARROW model input datasets and predictions of nitrogen loads in streams of the Chesapeake Bay watershed

This data release contains mean-annual total nitrogen (TN) loads predicted by a SPARROW model for individual stream and shoreline reaches in the Chesapeake watershed as defined by NHDPlus, a 1:100,000 scale representation of stream hydrography built upon the National Hydrography Dataset (NHD) (Horizon Systems, 2010).

Date published: February 10, 2021

Data for Specific Gage Analysis on the Patapsco River, 2010-2017

The U.S. Geological Survey, in collaboration with American Rivers and other partners, conducted a monitoring program beginning in 2010 to track river response to a series of dam removals on the Patapsco River intended to restore anadromous fish habitat in the watershed.

Date published: January 21, 2021

Ephemeral channel heads and digital elevation models used to extract stream networks in Clarksburg, MD

This dataset describes the location of channel heads survyed in two headwater watersheds in Clarksburg, Montgomery County, Maryland, and the digital elevation models derived from light detection and ranging (lidar) covering the two watersheds. The digital elevation models were used to derive topographic attributes used to delineate drainage networks that were then assessed for accuracy using...

Date published: December 2, 2020

Water bodies within 500 meters of poultry feeding operations on the Delmarva Peninsula in 2016 and 2017.

Data release contains 1710 polygons representing small bodies of water within 500 meters of poultry feeding operations on the Delmarva Peninsula. Ponds were identified using the USDA's National Agriculture Imagery Program's 2016 and 2017 products. Poultry feeding operations were described in location by Soroka and Duren (2020).

Date published: November 24, 2020

Annual spring nitrogen fluxes for nine Chesapeake Bay tributary monitoring sites, 1985 to 2020

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 presented from tributaries within the USGS River Input Monitoring (RIM) network identified by site numbers: 01491000, 01578310, 01594440, 01646580, 01668000, 01673000, 01674500, 02035000, 02041650. Periods of

Date published: November 12, 2020

Contiguous U.S. annual snow persistence and trends from 2001-2020

Snow persistence (SP) or the snow cover index (SCI), is the fraction of time that snow is present on the ground for a defined period. Cloud covered index (CCI) is the fraction of time that there is no data, cloud, or sensor saturation for the same period. SP and CCI were calculated on a pixel by pixel basis using MODIS/Terra Snow Cover 8-Day L3 Global 500m Grid, Collection 6

Date published: September 15, 2020

Low-streamflow and precipitation trends for 183 U.S. Geological Survey streamgages in the Chesapeake Bay Watershed.

This data release contains low-streamflow trend results from 183 U.S. Geological Survey (USGS) streamgages and precipitation trend results from gaged watersheds within the Chesapeake Bay Watershed. Data include streamgage identification number, trend slopes and significance for several low-streamflow and precipitation metrics.

Date published: September 1, 2020

Groundwater Quality and Plume Boundaries for Select Contaminants of Concern at Badger Army Ammunition Plant, Wisconsin (2000 – 2018)

This dataset describes concentrations of select contaminants in groundwater, collected at monitoring wells in the vicinity of the Badger Army Ammunition Plant in Sauk County, Wisconsin, between 2000 - 2018. The data were used to assess trends in contaminant concentrations over time, delineate plume boundaries at various time intervals, and assess the overall monitoring network at the Ba

Date published: September 1, 2020

Analytical Results for Ground Water Quality Monitoring Wells Around Badger Army Ammunition Plant, Wisconsin, 2000-2018

This dataset describes concentrations of select contaminants in groundwater, collected at monitoring wells in the vicinity of the Badger Army Ammunition Plant in Sauk County, Wisconsin, between 2000 - 2018. The original water quality data were compiled by the U.S. Army Environmental Command (AEC) and SpecPro Professional Services and provided to the U.S. Geological Survey (USGS). A

Date published: September 1, 2020

2,4-DNT Plume Boundaries

This dataset describes plume boundary extents for 2,4-dinitrotoluene (2,4-DNT) in the vicinity of the Badger Army Ammunition Plant in Sauk County, Wisconsin for various time intervals between 2000 - 2018.