Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds for the Conterminous United States: STATSGO Soil Characteristics, Layer Attributes

This tabular data set represents the STATSGO Soil Layer Attributes compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network. The source data is found in the LAYER table from the "STATSGO soil characteristics for the conterminous United States" produced by the United States Geological Survey (Wolock, 1997). The variables included are water-table depth, soil erodibility (k-fact), soil erodibility for the uppermost soil horizon (k-factup), permeability, average water capacity, bulk density, percent organic material, rainfall and runoff factor ("R factor"...

Types: Citation; Tags: Catchment, Conterminous United States, Inlandwaters, K factor, K factor upper horizon, All tags... NAWQA, NHDPlus, Number 10 sieve, Number 200 sieve, Number 4 sieve, R factor, STATSGO, average water capacity, bulk density, organic material, permeability, rock depth, soil, water table depth, Fewer tags

Area- and Depth-Weighted Averages of Selected SSURGO Variables for the Conterminous United States and District of Columbia

These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. This digital data release consists of seven national data files of area- and depth-weighted averages of select soil attributes for every available county in the conterminous United States and the District of Columbia as of March 2014. The files are derived from Natural Resources Conservations Service’s (NRCS) Soil Survey Geographic database (SSURGO). The data files can be linked to the raster datasets of soil mapping unit identifiers...

Categories: pre-SM502.8; Tags: Alaska, Hawaii, NSDI, Puerto Rico, SSURGO, All tags... Soils, USGS Science Data Catalog (SDC), United States, annual minimum water table depth, available water storage in the first 25 centimeters of the soil horizon, average water capacity, bulk density, dominant drainage class, drainage class, environment, environment, geoscientific Information, geoscientificInformation, hydric condition, hydric rating, hydrologic groups, inlandWaters, inlandWaters, kfact, ksat, minimum water table depth for the months April, May and June, organic material, percent clay, percent sand, percent silt, porosity, saturated hydraulic conductivity, soil erodibility factor, vertical saturated hydraulic conductivity, wettest drainage class, Fewer tags