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Scientific Investigations Report 2013–5103


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Application of the SPARROW Model to Assess Surface-Water Nutrient Conditions and Sources in the United States Pacific Northwest

Table 1. Definitions for abbreviations used for six-digit Hydrologic Unit Code (HUC6) watersheds in the United States Pacific Northwest.


Region HUC6 abbreviation HUC6 watershed
Pacific Coast WACR Washington Coastal Rivers
  NOCR Northern Oregon Coastal Rivers
  SOCR Southern Oregon Coastal Rivers
West Side Basins PUGT Puget Sound
  LCOL Lower Columbia River
  WILL Willamette River
Columbia River Basin KOOT Kootenai River
  PDOR Pend Oreille River
  SPOK Spokane River
  UCOL Upper Columbia River
  YAKI Yakima River
  JDAY John Day River
  DESC Deschutes River
  MCOL Middle Columbia River
Snake River Basin SNKH Snake River Headwaters
  USNK Upper Snake River
  MSBS Middle Snake–Boise Rivers
  MSPW Middle Snake–Powder Rivers
  SALM Salmon River
  CLRW Clearwater River
  LSNK Lower Snake River
Oregon Closed Basins ORCB Oregon Closed Basins

First posted July 17, 2013

For additional information contact:
Director, Oregon Water Science Center
U.S. Geological Survey
2130 SW 5th Avenue
Portland, Oregon 97201
http://or.water.usgs.gov

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