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Site Access and Sample Frame Issues for R-EMAP Central Valley, California, Stream Assessment

Authors
  • Hall, Robert K1
  • Husby, Peter1
  • Wolinsky, Gary1
  • Hansen, Olof1
  • Mares, Michiko1
  • 1 Region 9, U. S. Environmental Protection Agency, 75 Hawthorne St., San Francisco, CA, 94105 , San Francisco
Type
Published Article
Journal
Environmental Monitoring and Assessment
Publisher
Springer-Verlag
Publication Date
Jun 01, 1998
Volume
51
Issue
1-2
Pages
357–367
Identifiers
DOI: 10.1023/A:1005920227534
Source
Springer Nature
Keywords
License
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Abstract

The Central Valley of California contains critical habitat for many aquatic and terrestrial biological resources. The purpose of this R-EMAP project was to assess the effects from a highly modified agriculturally dominated landuse area on the aquatic resources of the lower portion of the Central Valley watersheds. The study area is 24,346 mi2 and comprises the Sacramento Valley and San Joaquin Valley watersheds to the 1,000 ft. elevation contour. Populations of interest are man-made conveyances and wadeable natural streams. There are 40,756 miles of streams and constructed conveyances within the Central Valley as designated by RF3 database. Sample sites were selected to represent 14,399 miles of streams and sloughs, and 16,697 miles of constructed conveyances.

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