thumbnail

Preliminary water-quality characterization of lakes in Washington

Water-Resources Investigations Report 77-94

By:

Links

  • The Publications Warehouse does not have links to digital versions of this publication at this time
  • Download citation as: RIS

Abstract

A method is described for comparing and characterizing lakes in Washington on the basis of water quality. The method can aid in selecting lakes for lake-restoration efforts. To simplify comparisons, a characteristic value (CV) was developed for each of 617 lakes in Washington using principal-component analysis. Three of 14 water-quality properties measured were used in this analysis because the principal component of the three properties accounted for 63 percent of the variance in the correlation matrix. The three properties were Secchi-disc visibility and concentrations of phosphorus and organic nitrogen. The significance of the derived CV 's was evaluated by regression of chlorophyll a concentration against CV. The resulting standard error of estimate of + or - 1.8 micrograms per liter of chlorophyll a indicated that the CV can be a useful index in assessing relative water-quality and trophic conditions among lakes. (Woodard-USGS)

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Preliminary water-quality characterization of lakes in Washington
Series title:
Water-Resources Investigations Report
Series number:
77-94
Edition:
-
Year Published:
1978
Language:
ENGLISH
Publisher:
U.S. Geological Survey, Water Resources Division,
Description:
iii, 31 p. ;27 cm.