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Ecology Publications & Forms |
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Ecology Publications & Forms |
| Title | Wenatchee River Temperature Total Maximum Daily Load Study |
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Wenatchee River Temperature Total Maximum Daily Load Study (Number of pages: 149) (Publication Size: 7MB)
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| Author(s) | Cristea, N. and G. Pelletier | ||||
| Description | Stream temperature monitoring in 2002 and 2003 in the Wenatchee River Basin showed that current conditions at many locations were warmer than the current and proposed water quality standards. In addition, many locations were found to be cooler than the temperature standards. Under 7Q10 flow conditions with full site-potential mature riparian vegetation, significant temperature reductions of 3.8 degrees C and 1.4 degrees C can be expected for Nason Creek and Icicle Creek respectively, while the Wenatchee River can expect a 0.3 degrees C reduction. Temperatures with improvements under critical (7Q10) conditions are predicted to be less than the threshold for fish lethality of 23 degrees C, but greater than the 18 degrees C Class A and 16 degrees C Class AA numeric criteria in many areas. Temperatures with improvements under average (7Q2) conditions are predicted to have greater benefits to the Wenatchee River and its tributaries. This analysis uses effective shade as a surrogate measure of heat flux to fulfill the requirements of Section 303(d) for a temperature TMDL. |
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The mission of the Department of Ecology is to protect, preserve, and enhance Washington’s environment. To help us meet that goal, please consider the environment before you print or request a copy.
ADA Accessibility The Department of Ecology is committed to providing people with disabilities access to information and services by meeting or exceeding the requirements of the Americans with Disabilities Act (ADA), Section 504 and 508 of the Rehabilitation Act, and Washington State Policy #188. Visit Ecology’s website for more information. |
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| Contact | EAP Publications Coordinator at 564-669-3028 or EAPpubs@ecy.wa.gov | ||||
| Keywords | Mission, Wenatchee River, stream, creek, reduction, Flux, flow, temperature, model, fish, 303(d), section 303, basin, river, water, Total Maximum Daily Load, lake | ||||
| WATERSHED | Water Resource Inventory Area 45 Wenatchee | ||||
| DATA | Environmental Information Management (EIM) #WENRTMDL |
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| RELATED PUBLICATIONS | Title:
Wenatchee River Watershed Temperature Total Maximum Daily Load: Water Quality Improvement Report Wenatchee River Basin Dissolved Oxygen, pH, and Phosphorus Total Maximum Daily Load Study Quality Assurance Project Plan: Wenatchee River Temperature, Dissolved Oxygen, and pH Total Maximum Daily Load, Year 1 Technical Study |
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