Publication Summary

Title

Old Stillaguamish River Channel Diel Surveys, July and September 2004

Month-Year PublishedOctober 2005
Online Availability
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Short Description

Two surveys examining diel changes in temperature, pH, conductivity, salinity, and dissolved oxygen were conducted in the Old Stillaguamish River Channel on July 28-30 and September 7-9, 2004. The surveys were a collaborative effort between staff of the Washington State Department of Ecology (Ecology) and the Stillaguamish Tribe Natural Resources Department.

The data will be used in a water quality clean-up plan for the Old Channel. Quality assurance results suggest that data collected by the Stillaguamish Tribe are comparable to Ecology data. Temperature, pH, and dissolved oxygen water quality criteria violations occurred in the channel

(Also see abstract below)
Publication Number05-03-035
Author(s)Coffler, S. and J. Joy
Print Availability
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Number of pages 21 pp.
Keywords quality assurance, resource, river, survey, temperature, tribe, water
Subject Waterbodies
Stillaguamish River
map of Washington state showing locations of subject waterbodies
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Quality Assurance Project Plan: Old Stillaguamish River Channel Diel Surveys.similar topic
Abstract Long Description

Two diel (24-hour) surveys examining changes in temperature, pH, conductivity, salinity, and dissolved oxygen were conducted in the Old Stillaguamish River Channel on July 28-30 and September 7-9, 2004. The surveys were a collaborative effort between the Washington State Department of Ecology (Ecology) and the Stillaguamish Tribe Natural Resources Department.

The purpose of the surveys was to provide new baseline data that reflect any changes that a new tide gate may have on water quality in the channel. The data may also be used in future water quality investigations of the Old Stillaguamish River Channel.

No comparative analysis of the 2004 data to previously collected data is provided; however, quality assurance results suggest that data collected by the Stillaguamish Tribe are comparable to Ecology data. Temperature, pH, and dissolved oxygen water quality criteria violations occurred in the channel during both surveys. Further monitoring is recommended.

Link to EIM data for User Study ID SCOF001


This page last updated October 8, 2008