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Drainage Areas for Stream Segments in Western San Diego County

Dates

Publication Date
Start Date
2014-01-01
End Date
2015-12-31

Citation

Perkins, E.E., and Kus, B.E., 2023, Drainage areas for stream segments in western San Diego County: U.S. Geological Survey data release, https://doi.org/10.5066/P9VWVAV6.

Summary

Drainage areas (or watersheds) were calculated for each stream segment in the National Hydrography Dataset High Resolution Plus Beta (NHD HR Plus Beta) using non-end junction points and the provided hydrologically enforced Digital Elevation Model (DEM). The DEM was used to create a flow direction raster. The pour points used were determined from junction points at each stream intersection excluding stream ends (i.e. channel heads are not included). Watershed calculations were automated using the ArcGIS "watershed" tool and then edited manually for accuracy. In western San Diego County (non-desert) there were 39,980 drainage areas calculated. The percent impervious in each watershed was calculated using the National Land Cover Dataset [...]

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Shapefile: PerImpervious_WTRSHEDS.zip
PerImpervious_WTRSHEDS.prj 425 Bytes
PerImpervious_WTRSHEDS.sbn 386.66 KB
PerImpervious_WTRSHEDS.sbx 14.31 KB
PerImpervious_WTRSHEDS.shp 672.59 MB
PerImpervious_WTRSHEDS.shx 312.44 KB
PerImpervious_WTRSHEDS.cpg 5 Bytes
PerImpervious_WTRSHEDS.dbf 2.94 MB

Material Request Instructions

Questions pertaining to the intended use of, or assistance with understanding limitations or interpretation of these data are to be directed to the individuals/organization listed in the Point of Contact section. Unless otherwise stated, all data, metadata, and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

Purpose

This data was created in order to calculate the upstream area and land cover of stream junctions at a higher resolution than is available from the Hydrologic Unit Codes (HUCs). These drainage areas are consistent with the National Hydrography Dataset and are nested within higher HUCs.

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ScienceBase WFS

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  • USGS Western Ecological Research Center

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Additional Information

Identifiers

Type Scheme Key
DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/P9VWVAV6

Shapefile Extension

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