Publication Summary

This report summarizes continuous dissolved oxygen and temperature data collected from mid-August through early October 2006. The study sites were located on the Puyallup River at river miles 2.9 and 11.8, and on the White River at river mile 1.8. This 2006 study was an outgrowth of the 1993 Puyallup River Total Maximum Daily Load for Biochemical Oxygen Demand, Ammonia, and Residual Chlorine study. The 2006 study was requested by Ecology′s Southwest Region Water Quality Program.

The study results indicated that the dissolved oxygen and temperature water quality criteria were sometimes not being met at most of the study sites.

The Washington State Department of Ecology conducted continuous (every 30 minutes) monitoring for dissolved oxygen and temperature at two sites on the lower Puyallup River and one site on the lower White River. The monitoring period was August 14 - October 9, 2006.

Dissolved oxygen levels from both Puyallup River sites were sometimes lower than, or almost lower than, the recently adopted Washington State criteria for dissolved oxygen.

Stream temperature results from one Puyallup River site (river mile 11.8) and the White River site were sometimes higher than Washington State temperature criteria. The monitoring period did not include the highest seven-day average of the daily maximum peak temperatures for 2006

Link to EIM data for User Study ID WJW00002