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Federal
1:2,000,000-scale Hydrologic Units of the United States (OLDER)
Department of the Interior —
This data set has been superseded by huc2m. This file contains hydrologic unit boundaries and codes for the conterminous United States along with Alaska, Hawaii,... -
Federal
1:250,000-scale Hydrologic Units of the United States
Department of the Interior —
The Geographic Information Retrieval and Analysis System (GIRAS) was developed in the mid 70s to put into digital form a number of data layers which were of interest... -
Federal
Digital Hydrologic Cataloging-Unit Boundaries for the Powder River, Wyoming, at 1:24,000 Scale
Department of the Interior —
This data set contains hydrologic cataloging-unit boundaries for selected units within the Powder River drainage basin of Wyoming. The hydrologic unit boundaries were... -
Federal
Data-Driven Drought Prediction Project Spatial Processing Units: Select U.S. Geological Stream Gage Basins
Department of the Interior —
This dataset represents 9,097 basin boundaries (rdews_gages.shp) of select U.S. Geological Survey's (USGS) active and historical stream gages derived from the... -
Federal
Environmental Settings Protocol - Landscape Dynamics HUC12 Areas of Analysis (AOAs) (2018)
Department of the Interior —
** Dataset containing HUC12 watershed boundaries that are within or intersect the boundary of a standard park AOA. ** The Watershed Boundary Dataset (WBD) is a... -
Federal
Wetlands and Watershed Nutrients: Dataset for Manuscript
U.S. Environmental Protection Agency —
The dataset includes information to make Figure 4 within the manuscript. This dataset is associated with the following publication: Golden, H., A. Rajib, C. Lane, J.... -
Federal
Raw data used in study
U.S. Environmental Protection Agency —
This file contains land cover and water chemistry data. This dataset is associated with the following publication: Smucker, N.J., A. Kuhn , M.A. Charpentier, C.J.... -
Federal
Nooksack River Basin N budget
U.S. Environmental Protection Agency —
Information used to construct a nitrogen budget for the Nooksack River Watershed. The data includes the following four tables: Table 1: Annual N Fluxes in the... -
Federal
Data for UMRB Wetland Flowpath TN/TP Manuscript
U.S. Environmental Protection Agency —
The dataset includes information to make Figures 2 through 6 of the manuscript. -
Federal
Hydrologic landscape groundwater modeling input parameters and results
U.S. Environmental Protection Agency —
The files and data included in this archive allow readers to inspect and reproduce the model results reported in Neff et al. (2020). Please refer to the included... -
Federal
Revision of National Index of Watershed Integrity
U.S. Environmental Protection Agency —
Datasets contain original and revised Index of Watershed Integrity (IWI) and Index of Catchment Integrity (ICI), as well as sub-components that were used to develop... -
Federal
NLCD & EnviroAtlas %IC for selected metropolitan areas
U.S. Environmental Protection Agency —
Several files of percentage impervious cover (%IC) from 30-m and 1-m data. The individual files contain %IC for different spatial support units. This dataset is... -
Federal
LMR watershed temporal DNA metabarcoding 2016 study
U.S. Environmental Protection Agency —
LMR watershed temporal DNA metabarcoding 2016 study. This dataset is associated with the following publication: Smucker, N., E. Pilgrim, H. Wu, C. Nietch, J. Darling,... -
Federal
MODELING BIOLOGICAL INDICATORS ACROSS SPACE AND TIME AT A NATIONAL SCALE
U.S. Environmental Protection Agency —
Represents spatial predictions of biological condition at unsampled streams and lakes across the counterminous US. Also includes spatial predictions channel... -
Federal
Use of Nitrogen and Carbon Stable Isotopes in Filter Feeding Bivalves and Surficial Sediment for Assessing Aquatic Condition in Lakes and Estuaries - DATA
U.S. Environmental Protection Agency —
Use of table isotope in surficial sediments and bivalves for assessing anthropogenic development in watersheds of lakes and estuaries. This dataset is associated with... -
Federal
Water Quality Assessment and Total Maximum Daily Loads Information (ATTAINS)
U.S. Environmental Protection Agency —
The Water Quality Assessment TMDL Tracking And Implementation System (ATTAINS) stores and tracks state water quality assessment decisions, Total Maximum Daily Loads... -
Federal
National Aquatic Resource Survey Rivers and Streams Data
U.S. Environmental Protection Agency —
Data are from 1,000 river and stream sites across the conterminous US where consistent biological, chemical, physical and watershed data were gathered. The sites were... -
Federal
PNW Hydrologic Landscape Class
U.S. Environmental Protection Agency —
Work has been done to expand the hydrologic landscapes (HLs) concept and to develop an approach for using it to address streamflow vulnerability from climate change.... -
Federal
National Assessment Database
U.S. Environmental Protection Agency —
The National Assessment Database stores and tracks state water quality assessment decisions, Total Maximum Daily Loads (TMDLs) and other watershed plans designed to...