Ecology Publications & Forms
Walla Walla River Tributaries Temperature Total Maximum Daily Load Study
Walla Walla River Tributaries Temperature Total Maximum Daily Load Study (Number of pages: 187) (Publication Size: 3MB)
|Stohr, A., M. LeMoine, and G. Pelletier
|The Walla Walla River basin contains salmonid fish habitat supporting endangered populations of steelhead and bull trout. Although temperatures in upper Mill Creek above the drinking water diversion stayed cool (under 13.5°C) year round, monitoring shows that temperatures at other tributary locations are warmer than federal Clean Water Act water quality standards.
Cooler summertime water temperatures are predicted for hypothetical conditions with mature riparian vegetation and improvements in riparian microclimate. Temperature reductions ranging from 2.5 - 6.0ºC are expected compared with the current conditions.
In addition to improvements in stream shading, other management activities such as increasing channel stability and complexity are recommended.
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|EAP Publications Coordinator at 564-669-3028 or EAPpubs@ecy.wa.gov
|stream, creek, reduction, flow, temperature, model, fish, 303(d), section 303, basin, river, water, Total Maximum Daily Load
|Water Resource Inventory Area 32 Walla Walla
|Environmental Information Management (EIM) #ASTO0003
Walla Walla River Basin pH and Dissolved Oxygen Total Maximum Daily Load Study: Water Quality Improvement Report
Walla Walla Watershed Temperature Total Maximum Daily Load: Water Quality Improvement Report
Quality Assurance Project Plan: Walla Walla River Tributaries Temperature Total Maximum Daily Load
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