Washington State Department of Ecology

Publication Summary

Title

River and Stream Ambient Monitoring Report for Wateryear 1993

Month-Year Published

September 1994

Online Availability

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Short Description

The Washington State Department of Ecology collected monthly water quality information at 79 river and stream monitoring stations during Wateryear (WY) 1993 (October 1, 1992, through September 30, 1993). The primary goals of this ongoing monitoring program are to characterize the rivers and streams of Washington State and to track changes in water quality. Water quality for WY�1993 was generally good.

(Also see abstract below)

Publication Number

94-158

Author(s)

Hallock, D. and B. Hopkins

Print Availability

Request from the program.

Number of pages

300 pp.

Keywords

ambient monitoring, bacteria, dissolved oxygen, fecal coliform, flow, goals, monitoring, pH, Puget Sound, report , river, stream, stream flows, temperature, water, Water Quality

Subject Waterbodies

Nisqually River, Nooksack River, Silver Creek, Skagit River, Samish River, Friday Creek, Baker River, Sauk River, Stillaguamish River, Stillaguamish River, N.F., Stillaguamish River, S.F., Snohomish River, Snoqualmie River, Skykomish River, Sammamish River, Cedar River, Green River, Puyallup River, White, Carbon River, South Prairie Creek, Methow River, Okanogan River, Similkameen River, Nespelem River, Sanpoil River, Spokane River, Hangman Creek, Deep Creek, Pend Oreille River, Columbia River, Franklin D. Roosevelt Lake, Deschutes River, Skokomish River, Chehalis River, Skookumchuck River, Mill Creek, Snake River, Lake Sacajewea, Little Almota Creek, Yakima River, Chambers Creek, Humptulips River, Satsop River, Black River, Newaukum River, Cowlitz River, Walla Walla River, Palouse River, Snake River, Asotin Creek, Wilson Creek, Wenatchee River

Abstract

Long Description

Fecal coliform bacteria was the most frequently violated standard based on individual samples. Excluding floating stations, 77�individual samples exceeded the "10 percent not to exceed" criteria out of about 750 samples collected; 16 of 66 stations exceeded standards. Fifteen of the 16�stations were west of the Cascades and 13 were stations on streams that drain to Puget Sound. Temperature standards were violated 42 times at 21 stations; all but one station was east of the Cascades. Dissolved oxygen and pH standards were violated 15 and 22 times at 5 and 12 stations, respectively. Stream flows in WY�1993 at the time of sampling were much lower than usual during most months. Low flows may have been at least partially responsible for the relatively low number of fecal coliform bacteria standards violations in WY 1993.

Link to EIM data for User Study ID AMS001D

This page last updated March 20, 2009