This dataset consists of hydrologically enforced digital elevation model rasters for each 4-digit Hydrologic Unit Code (HUC) area in Maine (0101, 0102, 0103, 0104, 0105, and 0106). The cell size of each raster is 10 meters, and the elevation values are expressed in centimeters. The elevation rasters may be used along with the accompanying data layers in this release to delineate watersheds within the HUC-4 areas.

This dataset consists of flow direction rasters for each 4-digit Hydrologic Unit Code (HUC) area in Maine (0101, 0102, 0103, 0104, 0105, and 0106). The cell size of each raster is 10 meters, and the eight integer values indicate the predicted direction of flow based on direction of steepest drop. The flow direction rasters may be used along with the accompanying data layers in this data release to delineate watersheds within the HUC-4 areas.

This streamgage boundary layers dataset consists of 512 USGS streamgage point locations and polygons delineated to show their drainage areas. The drainage areas were delineated from the streamgage points functioning as pour points, in addition to the Flow Accumulation Raster for Maine StreamStats and Flow Direction Raster for Maine StreamStats in from this data release.

This dataset consists of stream definition threshold rasters for each 4-digit Hydrologic Unit Code (HUC) area in Maine (0101, 0102, 0103, 0104, 0105, and 0106). The stream definition threshold rasters are a guide for delineation in StreamStats and represent where flow would tend to accumulate.

The U.S. Geological Survey (USGS), in cooperation with the Louisiana Department of Transportation, prepared hydro-conditioned geographic information systems (GIS) layers for use in the Louisiana StreamStats application. These data were used within peak flow and low flow regression equations for Louisiana. This dataset consists of flow accumulation rasters for each 8-digit Hydrologic Unit Code (HUC) area in Louisiana, one of the layer types needed to delineate watersheds within the HUC-8 areas, merged into a single dataset. The 54 HUCs represented by this dataset are 03180004, 03180005, 08030100, 08040202, 08040205, 08040206, 08040207, 08040301, 08040302, 08040303, 08040304, 08040305, 08040306, 08050001, 08050002, 08050003, 08060100, 08070100, 08070201, 08070202, 08070203, 08070204, 08070205, 08070300, 08080101, 08080102, 08080103, 08080201, 08080202, 08080203, 08080204, 08080205, 08080206, 08090100, 08090201, 08090202, 08090203, 08090301, 08090302, 11140201, 11140202, 11140203, 11140204, 11140205, 11140206, 11140207, 11140208, 11140209, 11140304, 11140306, 12010002, 12010004, 12010005, and 12040201.

The U.S. Geological Survey (USGS), in cooperation with the Puerto Rico Environmental Quality Board, has compiled a series of geospatial datasets for Puerto Rico to be implemented into the USGS StreamStats application (https://streamstats.usgs.gov/ss/). These geospatial datasets, along with basin characteristics datasets for Puerto Rico published as a separate USGS data release (https://doi.org/10.5066/P9HK9SSQ), were used to delineate watersheds and develop the peak-flow and low-flow regression equations used by StreamStats. The geospatial dataset described herein are the rasters of flow accumulation, which is the number of pixels upstream of a given pixel. Data are partitioned into four TIFF files, one for each of the four 8-digit Hydrologic Unit Code (HUC) areas for Puerto Rico: 21010002, 21010003, 21010004, and 21010005.

The U.S. Geological Survey (USGS), in cooperation with the Louisiana Department of Transportation, prepared hydro-conditioned geographic information systems (GIS) layers for use in the Louisiana StreamStats application. These data were used within peak flow and low flow regression equations for Louisiana. This dataset consists of digital elevation model rasters for each 8-digit Hydrologic Unit Code (HUC) area in Louisiana, one of the layer types needed to delineate watersheds within the HUC-8 areas, merged into a single dataset. LA_fac10.tif raster is the log base 10 tranformation of the flow accumulation raster LA.fac.tif. LA_fac10.tif raster should be displayed above La_fac.tif in the drawing order to illuminate the flow accumulation streamflow paths within Louisiana.The 54 HUCs represented by this dataset are 03180004, 03180005, 08030100, 08040202, 08040205, 08040206, 08040207, 08040301, 08040302, 08040303, 08040304, 08040305, 08040306, 08050001, 08050002, 08050003, 08060100, 08070100, 08070201, 08070202, 08070203, 08070204, 08070205, 08070300, 08080101, 08080102, 08080103, 08080201, 08080202, 08080203, 08080204, 08080205, 08080206, 08090100, 08090201, 08090202, 08090203, 08090301, 08090302, 11140201, 11140202, 11140203, 11140204, 11140205, 11140206, 11140207, 11140208, 11140209, 11140304, 11140306, 12010002, 12010004, 12010005, and 12040201.

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.

The U.S. Geological Survey (USGS), in cooperation with the Louisiana Department of Transportation, prepared hydro-conditioned geographic information systems (GIS) layers for use in the Louisiana StreamStats application. These data were used within peak flow and low flow regression equations for Louisiana. This dataset consists of stream definition 900 cell threshold rasters for each 8-digit Hydrologic Unit Code (HUC) area in Louisiana, one of the layer types needed to delineate watersheds within the HUC-8 areas, merged into a single dataset.. The 54 HUCs represented by this dataset are 03180004, 03180005, 08030100, 08040202, 08040205, 08040206, 08040207, 08040301, 08040302, 08040303, 08040304, 08040305, 08040306, 08050001, 08050002, 08050003, 08060100, 08070100, 08070201, 08070202, 08070203, 08070204, 08070205, 08070300, 08080101, 08080102, 08080103, 08080201, 08080202, 08080203, 08080204, 08080205, 08080206, 08090100, 08090201, 08090202, 08090203, 08090301, 08090302, 11140201, 11140202, 11140203, 11140204, 11140205, 11140206, 11140207, 11140208, 11140209, 11140304, 11140306, 12010002, 12010004, 12010005, and 12040201.