Title | Quality Assurance Project Plan: Pataha Creek Bacteria, Dissolved Oxygen, and pH Total Maximum Daily Load Study |
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Quality Assurance Project Plan: Pataha Creek Bacteria, Dissolved Oxygen, and pH Total Maximum Daily Load Study (Number of pages: 98) (Publication Size: 3236KB)
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Author(s) | T. Stuart, J. Zimbric, P. Marti | ||||
Description | Data collected from the Pataha Creek watershed show that multiple reaches of Pataha Creek do not meet Washington State water quality standards for bacteria, dissolved oxygen, and pH. This Quality Assurance Project Plan (QAPP) describes data collection, analysis, and computer modeling to confirm the geographic and temporal extent of these water quality issues, and to identify the pollution reductions needed to address them. This work aims to restore and protect beneficial uses in the Pataha Creek watershed, particularly to improve conditions for aquatic life (salmonids and other species) and for people to recreate (e.g., swim, fish) in these streams. This study will develop pollutant load limits for creeks in the watershed, as necessary, to protect these uses. The Washington State Department of Ecology will collect bacteria, total suspended solids, turbidity, and flow data from October 2024 to September 2025. We will collect nutrient data and continuous dissolved oxygen, pH, temperature, and conductivity data during the summer of 2025, along with other supporting data types such as air temperature and dew point, effective shade, stream time of travel, and periphyton taxonomy and biomass. In addition, we may collect groundwater data in a reach of interest near Pomeroy during the summer low-flow period if appropriate sample sites can be located. We will use computer models along with statistical and mass-balance analyses to develop pollution limits needed for Pataha Creek and its tributaries to meet water quality standards. |
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Contact | EAP Publications Coordinator at 564-669-3028 or EAPpubs@ecy.wa.gov | ||||
Keywords | QAPP, E.coli, quality assurance project plan, TMDL, Total Maximum Daily Load, pH, dissolved oxygen, bacteria, Pataha Creek | ||||
WATERSHED | Water Resource Inventory Area 35 Middle Snake | ||||
DATA | Environmental Information Management (EIM) #tist0004 |
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RELATED PUBLICATIONS | Title:
Tucannon River and Pataha Creek Temperature Total Maximum Daily Load: Water Quality Improvement Report and Implementation Plan |
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