Permitting and Reporting Information System (PARIS)
Water quality data for water discharge permit holders. Use the search functions to locate a facility of interest and drill down through the links to view the data.
Ambient Water Quality Data
Click on a specific watershed and drill down through the links to view parameters of interest:
The Washington State Department of Ecology has conducted monthly water quality monitoring at hundreds of stream stations throughout the state for nearly 50 years. Ecology routinely measures indicators of water quality such as ammonia, nitrate/nitrite, phosphorus (total and soluble reactive), conductivity, nitrogen, suspended solids, fecal coliform bacteria, oxygen, temperature, flow, pH, turbidity, and metals.
The Environmental Information Management (EIM) Database
This data base provides access to over 12.5 million environmental records on air, water, soil, sediment, aquatic animals and plants. To locate information relating to Avista’s activities at Lake Spokane, search the EIM Database for Lake Spokane as the subject.
Quality Assurance Project Plan: Lake Spokane Nutrient Monitoring
Each study conducted by the Washington State Department of Ecology (Ecology) must have an approved Quality Assurance Project Plan. The plan describes the objectives of the study and the procedures to be followed to achieve those objectives. During 2010, Ecology submitted the Spokane River and Lake Spokane Dissolved Oxygen Total Maximum Daily Load (TMDL): Water Quality Improvement Report to the U.S. Environmental Protection Agency (EPA) for approval. The most recent data collection effort on Lake Spokane occurred in 2001. As the 2010 TMDL moves from development to implementation, nutrient, productivity, and dissolved oxygen data will be needed to verify the baseline condition of Lake Spokane. This condition will be used for comparison to future effectiveness monitoring data. During 2010 and 2011, Ecology and Avista Utilities will conduct regular critical-period (May to October) sampling on Lake Spokane, the Spokane River, and the Little Spokane River. Sampling will be for nutrients, dissolved oxygen, and measures of productivity. Data will be compiled and used to verify the baseline condition of Lake Spokane.
Spokane River and Lake Spokane (Long Lake) Pollutant Loading Assessment for Protecting Dissolved Oxygen (Cusimano, 2004)
The report summarizes the predicted water quality conditions in the Spokane River system under different loading conditions using the hydrodynamic and water quality computer model CEQUALW2 developed for the project. In addition, the report provides an assessment of the historical water quality data for the river system and existing phosphorus TMDL for Lake Spokane. Author: Bob Cusimano
SRSP 2009 Modeling Memo
Spokane River Stewardship Partner 2009 memo identifying issues, concerns and questions relating to development of DO TMDL model. Author: SRSP