Lower Yakima River Suspended Sediment Total Maximum Daily Load: Effectiveness Monitoring Report
Acrobat PDF format (Number of pages: 57) (Publication Size: 799KB)
|Author(s)||Coffin, C., R. Plotnikoff, and R. Anderson|
|Description||The National Water Quality Assessment (USGS, 1989-90) found high levels of the organochlorine pesticide DDT in resident fish from the lower reaches of the Yakima River. Further evaluations by Ecology in 1994-95 demonstrated a high correlation between sediment loads eroded from irrigated agricultural lands and DDT in the water column. The Lower Yakima River Suspended Sediment and DDT Total Maximum Daily Load study, finalized in 1998, required effectiveness monitoring to determine whether targets are being achieved. This effectiveness monitoring study found improved turbidity and reduced sediment loads in the study area, and most, but not all, TMDL targets were achieved.|
|REQUEST A COPY||
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.
Persons with hearing loss can call 711 for Washington Relay Service
Persons with a speech disability can call 877-833-6341
|Contact||Joan LeTourneau at 360-407-6764 or firstname.lastname@example.org|
|Keywords||reservation, suspended sediment, creek, sampling, fish, 303(d), section 303, river, Granger Drain, water quality, assessment, monitoring, quality, Total Maximum Daily Load, Environmental Protection Agency|
|WATERSHED||Water Resource Inventory Area 37 Lower Yakima|
|DATA||Environmental Information Management (EIM) #CCOF0001
Quality Assurance Project Plan: TMDL Effectiveness Monitoring and Water Quality Evaluation in the Lower Yakima River
Lower Yakima River Suspended Sediment TMDL
A Suspended Sediment and DDT Total Maximum Daily Load Evaluation Report for the Yakima River
Copyright © Washington State Department of Ecology. See http://www.ecy.wa.gov/copyright.html.