Found 36 datasets matching filters. (clear all filters)
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This data set represents the area of bedrock geology types in square meters compiled for every catchment of NHDPlus for the conterminous United States. The source data set is the "Geology of the...
Search relevance: 1.00 | Views last month: 19 | Catalog Last Checked: May 17, 2026 at 07:16 PM -
This tabular data set represents the mean base-flow index expressed as a percent, compiled for every catchment in NHDPlus for the conterminous United States. Base flow is the component of...
Search relevance: 1.00 | Views last month: 18 | Catalog Last Checked: May 05, 2026 at 10:09 PM -
This dataset represents the area of each physiographic province (Fenneman and Johnson, 1946) in square meters, compiled for every catchment of NHDPlus for the conterminous United States. The...
Search relevance: 1.00 | Views last month: 18 | Catalog Last Checked: May 05, 2026 at 10:17 PM -
This data set represents the estimated area of level 3 ecological landscape regions (ecoregions), as defined by Omernik (1987), compiled for every catchment of NHDPlus for the conterminous...
Search relevance: 1.00 | Views last month: 14 | Catalog Last Checked: May 05, 2026 at 07:26 PM -
This data set represents the mean percent impervious surface from the Imperviousness Layer of the National Land Cover Dataset 2001 (LaMotte and Wieczorek, 2010), compiled for every catchment of...
Search relevance: 1.00 | Views last month: 14 | Catalog Last Checked: May 05, 2026 at 09:24 PM -
This data set represents the estimated amount of phosphorus and nitrogen fertilizers applied to selected crops for the year 2002, compiled for every catchment of NHDPlus for the conterminous...
Search relevance: 1.00 | Views last month: 13 | Catalog Last Checked: May 05, 2026 at 07:50 PM -
This data set represents the average normalized atmospheric (wet) deposition, in kilograms, of Nitrate (NO3) for the year 2002 compiled for every catchment of NHDPlus for the conterminous United...
Search relevance: 1.00 | Views last month: 13 | Catalog Last Checked: May 05, 2026 at 08:39 PM -
This data set represents the 30-year (1971-2000) average annual precipitation in millimeters multiplied by 100 compiled for every catchment of NHDPlus for the conterminous United States. The...
Search relevance: 1.00 | Views last month: 12 | Catalog Last Checked: May 05, 2026 at 08:35 PM -
This data set represents the average contact time, in units of days, compiled for every catchment of NHDPlus for the conterminous United States. Contact time, as described in Wolock and others...
Search relevance: 1.00 | Views last month: 12 | Catalog Last Checked: May 05, 2026 at 08:52 PM -
This data set represents the average atmospheric (wet) deposition, in kilograms per square kilometer, of inorganic nitrogen for the year 2002 compiled for every catchment of NHDPlus for the...
Search relevance: 1.00 | Views last month: 12 | Catalog Last Checked: May 17, 2026 at 06:50 PM -
This data release contains a crosswalk between subwatersheds (12-digit hydrologic unit codes; hereafter, HUC12s) and hydrologic regions (sometimes called "Van Metre regions"). This crosswalk...
Search relevance: 1.00 | Views last month: 9 | Catalog Last Checked: May 05, 2026 at 10:13 PM -
This tabular data set represents the area of bedrock geology types in square meters compiled for every catchment of MRB_E2RF1 catchments for Major River Basins (MRBs, Crawford and others, 2006)....
Search relevance: 1.00 | Views last month: 5 | Catalog Last Checked: May 05, 2026 at 10:09 PM -
This data set represents the average annual R-factor, rainfall-runoff erosivity measure, compiled for every catchment of NHDPlus for the conterminous United States. The source data are from...
Search relevance: 1.00 | Views last month: 5 | Catalog Last Checked: May 05, 2026 at 07:51 PM -
This data set represents the area of surficial geology types in square meters compiled for every catchment of NHDPlus for the conterminous United States. The source data set is the "Digital data...
Search relevance: 1.00 | Views last month: 5 | Catalog Last Checked: May 05, 2026 at 08:13 PM -
This tabular data set represents the mean value for infiltration-excess overland flow as estimated by the watershed model TOPMODEL, compiled for every catchment of NHDPlus for the conterminous...
Search relevance: 1.00 | Views last month: 4 | Catalog Last Checked: May 17, 2026 at 07:02 PM -
This tabular dataset represents the estimated area of artificial drainage for the year 1992 and irrigation types for the year 1997 compiled for every catchment of NHDPlus for the conterminous...
Search relevance: 1.00 | Views last month: 4 | Catalog Last Checked: May 05, 2026 at 10:03 PM -
This data set represents estimated soil variables compiled for every catchment of NHDPlus for the conterminous United States. The variables included are cation exchange capacity, percent calcium...
Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: May 05, 2026 at 10:10 PM -
A digital hydrologic network was developed to support SPAtially Referenced Regression on Watershed attributes (SPARROW) models within selected regions of the United States. These regions...
Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: May 05, 2026 at 08:37 PM -
A digital hydrologic network was developed to support SPAtially Referenced Regression on Watershed attributes (SPARROW) models within selected regions of the United States. These regions...
Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: May 05, 2026 at 09:08 PM -
This data set represents the average value of saturation overland flow, in percent of total streamflow, compiled for every catchment of NHDPlus for the conterminous United States. The source data...
Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: May 05, 2026 at 09:54 PM
