In cooperation with the Federal Emergency Management Agency, the Pennsylvania Department of Transportation, the Pennsylvania Department of Environmental Protection, and the Susquehanna River Basin Commission, the U.S. Geological Survey (USGS) calculated over 20 different basin characteristics as part of preparing the Pennsylvania StreamStats 2020 application. These datasets are raster representations of various environmental, geological, and land use attributes within the Pennsylvania StreamStats 2020 study area, and will be served in the Pennsylvania StreamStats 2020 application to describe delineated watersheds. The StreamStats application provides access to spatial analytical tools that are useful for water-resources planning and management, and for engineering and design purposes. The map-based user interface can be used to delineate drainage areas, get basin characteristics and estimates of flow statistics, and more.

The U.S. Geological Survey (USGS), in cooperation with the New Jersey Department of Environmental Protection (NJDEP), calculated several basin characteristics as part of the updated New Jersey StreamStats 2022 application (U.S. Geological Survey, 2022). These datasets are raster representations of various environmental, geological, and land use attributes within the New Jersey StreamStats 2022 study area; they are applied in the New Jersey 2022 application to describe delineated watersheds. This update features improvements in base elevation resolution from 10 meters to 10 feet and stream centerline hydrography from 1:24,000 to 1:2,400, as well as resampling of previously existing datasets to match the 10-foot resolution. The sixteen 8-digit Watershed Boundary Dataset Hydrologic Unit Codes (HUCs) represented by these datasets are 02020007, 02030103, 02030104, 02030105, 02040101, 02040102, 02040103, 02040104, 02040105, 02040106, 02040201, 02040202, 02040203, 02040206, 02040301, and 02040302 (U.S. Geological Survey, 2016). The StreamStats application provides access to spatial analytical tools that are useful for water-resources planning and management, as well as engineering and design purposes. The map-based user interface can be used to delineate drainage areas, determine basin characteristics and estimate flow statistics, including instantaneous flood discharge, monthly flow-duration, and monthly low-flow frequency statistics for ungaged streams. References cited: U.S. Geological Survey, 2016, National Hydrography: U.S. Geological Survey, accessed February 7, 2022, at https://www.usgs.gov/national-hydrography. U.S. Geological Survey, 2022, StreamStats v4.6.2: U.S. Geological Survey, accessed February 7, 2022, at https://streamstats.usgs.gov/ss/.

In cooperation with the South Carolina Department of Transportation, the U.S. Geological Survey calculated four land cover basin characteristics rasters as part of preparing the South Carolina StreamStats 2021 application. These datasets are raster representations of impervious surface, developed, forested, and storage land cover attributes within the South Carolina StreamStats 2021 study area, and will be served in the South Carolina StreamStats 2021 application to describe delineated watersheds. The StreamStats application provides access to spatial analytical tools that are useful for water-resources planning and management, and for engineering and design purposes. The map-based user interface can be used to delineate watershed areas, get basin characteristics and estimates of flow statistics, and more.

In cooperation with the South Carolina Department of Transportation, the U.S. Geological Survey calculated four land cover basin characteristics rasters from the National Land Cover Database (NLCD) 2019 as part of updating the South Carolina StreamStats application. These datasets are raster representations of impervious surface, developed, forested, and storage land cover attributes within the South Carolina StreamStats study area, and will be served in the South Carolina StreamStats application to describe delineated watersheds. The StreamStats application provides access to spatial analytical tools that are useful for water-resources planning and management, and for engineering and design purposes. The map-based user interface can be used to delineate watershed areas, get basin characteristics and estimates of flow statistics, and more.

This dataset was produced in by the Delaware Geological survey in cooperation with the US Geological Survey and Delaware Department of Transportation for the purpose of calculating stream gage basin characteristics in preparation for the Delaware 2020 StreamStats application. These datasets are raster representations of various environmental, geological, and land use attributes within the Delaware StreamStats 2020 study area, and will be served in the Delaware StreamStats 2020 application to describe delineated watersheds. The StreamStats application provides access to spatial analytical tools that are useful for water-resources planning and management, and for engineering and design purposes. The map-based user interface can be used to delineate drainage areas, get basin characteristics and estimates of flow statistics, and more.

This dataset was produced in by the Delaware Geological survey in cooperation with the US Geological Survey and Delaware Department of Transportation for the purpose of delineating gage basins and performing hydrologic analysis in the Delaware 2020 StreamStats application. These datasets are raster representations of the fundamental dataset layers necessary for the functionality of StreamStats application within the Delaware StreamStats 2020 study area. The StreamStats application provides access to spatial analytical tools that are useful for water-resources planning and management, and for engineering and design purposes. The map-based user interface can be used to delineate drainage areas, get basin characteristics and estimates of flow statistics, and more. The datasets include a study area defined by all HUC12 watersheds flowing into or out of the state of Delaware, which includes portions of HUC08 watersheds 02040202, 02040205, 02040207, 02040303, 02060002, 02060005, 02080109, 02080110, and 02080111.

U. S. Geological Survey (USGS) scientists completed a data collection campaign from the 26th of July to the 13th of August in 2021, using various methods to record geomorphic and habitat indicators throughout streams in the Shenandoah Valley. Field methods included GNSS surveys, gravelometer-based pebble count readings, visual assessments, and riparian analyses. This metadata record contains all recorded observations from the campaign as well as numerous summary metrics to be used in model development. Those "model-ready" data can be found in Summary_Metrics_Deliverable.csv in the parent item, while the two child items containing recorded in-channel observations and recorded survey data. Attached to this release is a data dictionary containing general information about Summary_Metrics_Deliverable.csv. This information can be found in the Summary_Metrics_Dictionary.csv file. The various data collected in this data release fall into the following categories describing both reach average and heterogeneity: - Study Information - Internal site ID - Riparian Statistics - Monarch Presence - Riparian assessment score - Riparian canopy cover - Active floodplain width - Bank Statistics - Bank erosion rates - Bank vegetation - Modified BEHI score - Total to bankfull ratio - Bank angle - Total bank height - Legacy sediment depth - In-Channel Statistics - Wetted width - Bankfull width - Bankfull height - Pebble count - Average - Heterogeneity metrics - Embeddedness - Average - Heterogeneity metrics - Fine sediment depth - Average - Heterogeneity metrics - Water depth - Average - Heterogeneity metrics - Flow type - Average - Heterogeneity metrics - In-channel canopy cover - Vegetation coverage - Average - Heterogeneity metrics - Fish habitat coverage - Average - Heterogeneity metrics - Woody debris - Survey Metrics - Thalweg sinuosity - Longitudinal roughness - Water surface slope - Cross section - Bankfull area - Total channel area - Total to bankfull area ratio - Cross sectional roughness - Wetted perimeter Additionally, the following child items can be found attached to this data release: - Recorded Field Observations: All unsummarized data collected by field team members from the Habitat Assessment field teams. - Recorded Survey Data: All coordinate data from surveying campaign collected by Habitat Assessment field teams. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

In cooperation with the Puerto Rico Environmental Quality Board, the U.S. Geological Survey (USGS) calculated over 40 different basin characteristics as part of preparing the Puerto Rico StreamStats application. These data were used to update the peak flow and low flow regression equations for Puerto Rico. These datasets are raster representations of various environmental, geological, and land use attributes within the Puerto Rico StreamStats 2020 study area, and will be served in the Puerto Rico StreamStats 2020 application to describe delineated watersheds. The StreamStats application provides access to spatial analytical tools that are useful for water-resources planning and management, and for engineering and design purposes. The map-based user interface can be used to delineate drainage areas, retrieve basin characteristics and estimates of flow statistics, and more.

This child page contains the drainage basin characteristics that were computed for each drainage basin and considered to be potential explanatory variables in multiple regression analysis in the 2025 VA-WV flood-frequency analysis. The six tables are grouped by source datasets and include: 1) Table_9_L3_Ecoregions.txt: Contains area and percent of Level III ecoregions from the Environmental Protection Agency within each basin 2) Table_10_L4_Ecoregions.txt:Contains area and percent of Level IV ecoregions from the Environmental Protection Agency within each basin 3) Table_11_Land_Cover_2019.txt: Contains area and percent of land cover classes from the 2019 National Land Cover Dataset within each basin 4) Table_12_Miscellaneous.txt: Contains miscellaneous information about selected geographic, geometric, and geologic properties of each basin 5) Table_13_Physiography.txt: Contains area and percent of physiographic provinces from Fenneman and Johnson, 1946 within each basin 6) Table_14_Precipitation.txt: Contains the mean annual precipitation from PRISM and the mean precipitation at selected recurrence intervals from NOAA Atlas 14 for each basin 7) Table_15_BC_Evaluation.txt: A subset of 121 of these basin characteristics were evaluated using correlation and scatterplot matrices and results are summarized 8) Table_17_Drainage_Basin_Areas_within_Regions.txt: Contains the total area and percentage of area of each hydrologic regression region within each streamgage drainage basin The associated child page titled "Drainage basin polygons and outlet points for 1050 selected streamgages in and near Virginia and West Virginia, 2025" contains geospatial layers of drainage outlet points and drainage basin boundaries that were generated in this study. These shapefiles can be merged with the basin characteristics files using the Station_ID field.