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  1. Water Mission Area National Spatial Data Infrastructure Datasets
  2. Attributes for MRB_E2RF1 Catchments in Selected Major River Basins of the Conterminous United States: Contact Time, 2002

Attributes for MRB_E2RF1 Catchments in Selected Major River Basins of the Conterminous United States: Contact Time, 2002

Dates

Release Date
2010-01-01
Publication Date

Citation

Wieczorek, M.E. and LaMotte, A.E., 2010, Attributes for MRB_E2RF1 Catchments in Selected Major River Basins of the Conterminous United States: Contact Time, 2002: U.S. Geological Survey data release, https://doi.org/10.5066/P98VCZLM.

Summary

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 tabular data set represents the average contact time, in units of days, compiled for every MRB_E2RF1 catchment of Major River Basins (MRBs, Crawford and others, 2006). Contact time, as described in Vitvar and others (2002), is defined as the baseflow residence time in the subsurface. The source data set was the U.S. Geological Survey's (USGS) 1-kilometer grid for the conterminous United States (D.M. Wolock, U.S. Geological Survey, written commun., [...]

Contacts

Point of Contact :
Michael E. Wieczorek, U.S. Geological Survey
Originator :
Michael E. Wieczorek, Andrew E. LaMotte
Metadata Contact :
U.S. Geological Survey
SDC Data Owner :
Maryland-Delaware-D.C. Water Science Center
USGS Mission Area :
Water Resources

Attached Files

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mrb_e2rf1_contact.xml
Original FGDC Metadata
View 		18.04 KB application/fgdc+xml
mrb_e2rf1_contact_mrb1.zip 82.11 KB application/zip
mrb_e2rf1_contact_mrb2.zip 133.1 KB application/zip
mrb_e2rf1_contact_mrb3.zip 189.28 KB application/zip
mrb_e2rf1_contact_mrb4.zip 195.31 KB application/zip
mrb_e2rf1_contact_mrb5.zip 138.83 KB application/zip
mrb_e2rf1_contact_mrb6.zip 88.45 KB application/zip
mrb_e2rf1_contact_mrb7.zip 181.07 KB application/zip
mrb_e2rf1_contact_mrb8.zip 41.48 KB application/zip
mrb_e2rf1_contact.jpg thumbnail 46.06 KB image/jpeg

Purpose

This tabular data set was created and used by the U.S. Geological Survey (USGS) specifically to estimate contact time for the 2002 time period per watershed segment in the application of the national SPAtially Referenced Regression On Watershed attributes (SPARROW) model . The SPARROW model relates in-stream water-quality measurements to spatially referenced characteristics of watersheds, including contaminant sources and factors influencing terrestrial and stream transport. The model empirically estimates the origin and fate of contaminants in streams, and quantifies uncertainties in these estimates based on model coefficient error and unexplained variability in the observed data. For more information on the USGS SPARROW model please refer to: https://water.usgs.gov/nawqa/sparrow/intro/intro.html.
Illlustration of data set
Illlustration of data set

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  • Model Data Management Function (MDMF)

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Provenance

These data were originally released on the Water Mission Area National Spatial Data Infrastructure Node and were migrated to sciencebase.gov in 2023. 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.

Additional Information

Identifiers

Type Scheme Key
DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/P98VCZLM

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