Routine freshwater monitoring data collected by the The WA State Department of Ecology's River and Stream Monitoring Program are summarized by a technique called the "Water Quality Index" (WQI). The WQI ranges from 1 (poor quality) to 100 (good quality). The WQI summary does not include non-standard elements like metals. For temperature, pH, oxygen, and fecal coliform bacteria, the WQI is based on criteria in Washington’s Water Quality Standards, WAC 173-201A.
For nutrient and sediment measures where standards are not specific, results are based on expected conditions in a given region. Multiple constituents are combined and results aggregated over time to produce a single score for each station and each year.

Summer Low Flow Trend Indicator results, statewide, updated through Oct 2013.

This information is updated annually with an additional year of flow data. These results are provided to the Puget Sound Partnership for their Vital Signs (http://www.psp.wa.gov/vitalsigns/summer_stream_flows.php) and to the Governor's Salmon Recovery Office for the "State of Salmon in WAtersheds" report (http://stateofsalmon.wa.gov/statewide/indicators/water-quantity).

The attached document "WR Indicator Outcomes Memo - 10-24-10.pdf" describes the methodology for developing these indicators.

The attached document "Low Flow Indicator Metadata.pdf" describes the contents of each column.

Dept. of Ecology home page: http://www.ecy.wa.gov/

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Information provided by Ecology on this Web site is accurate to the best of Ecology's knowledge and is subject to change on a regular basis, without notice. Ecology cannot and does not warrant that the information on this Web site is absolutely current, although every effort is made to ensure that it is kept as current as possible. Ecology cannot and does not warrant the accuracy of these documents beyond the source documents, although every attempt is made to work from authoritative sources. Links to related sites are provided as a courtesy, but Ecology is not responsible for their availability, content or policies.

This map shows the air emissions reported by major industrial, commercial, and institutional facilities that have an Air Operating Permit (AOP). Each major facility is represented by an icon that, when clicked, shows the annual tons of pollutants (Carbon Monoxide, Volatile Organic Compounds, Nitrogen Oxides, Ammonia, Coarse Particles, Fine Particles, and Sulfur Dioxide) and greenhouse gases (Carbon Dioxide, Methane, Nitrous Oxide, and Fluorocarbons) emitted into the air. All air pollutant values are from the 2016 Comprehensive Emissions Inventory. All greenhouse gas (GHG) values are from the 2016 GHG Reporting Data. Note that GHG data uses metric tons while AOP data uses US short tons.

The Air Operating Permit (AOP) Regulation Program requires a permit for a facility if it has the potential to annually emit more than 100 US tons per year of any regulated air pollutant. The GHG Reporting Program requires reports from facilities that emit more than 10,000 metric tons (11,023 US tons) per year of CO2-equivalent GHGs. Note that not all AOP sources are required to report GHGs. See the About Tab for links to more information.

New data (unverified) within this dataset is preliminary and subject to change per the verification process.

The map contains greenhouse gas (GHG) data reported to Ecology as of December 15, 2018. The reported emissions are preliminary and have not been fully verified by Ecology. This information is subject to change.

Areas for state water resource planning and administration.

Routine freshwater monitoring data collected by the The WA State Department of Ecology's River and Stream Monitoring Program are summarized by a technique called the "Water Quality Index" (WQI). The WQI ranges from 1 (poor quality) to 100 (good quality). The WQI summary does not include non-standard elements like metals. For temperature, pH, oxygen, and fecal coliform bacteria, the WQI is based on criteria in Washington’s Water Quality Standards, WAC 173-201A.
For nutrient and sediment measures where standards are not specific, results are based on expected conditions in a given region. Multiple constituents are combined and results aggregated over time to produce a single score for each station and each year.

Routine freshwater monitoring data collected by the The WA State Department of Ecology's River and Stream Monitoring Program are summarized by a technique called the "Water Quality Index" (WQI). The WQI ranges from 1 (poor quality) to 100 (good quality). The WQI summary does not include non-standard elements like metals. For temperature, pH, oxygen, and fecal coliform bacteria, the WQI is based on criteria in Washington’s Water Quality Standards, WAC 173-201A.
For nutrient and sediment measures where standards are not specific, results are based on expected conditions in a given region. Multiple constituents are combined and results aggregated over time to produce a single score for each station and each year.

Active Water Right Applications, Permits, Certificates and Claims in Washington State

Routine freshwater monitoring data collected by the The WA State Department of Ecology's River and Stream Monitoring Program are summarized by a technique called the "Water Quality Index" (WQI). The WQI ranges from 1 (poor quality) to 100 (good quality). WQI scores above 80 are consistent with meeting water quality goals for conventional pollutants. However, the different color coding for scores less than 80 is a visual aid; breakpoints other than 80 are not ecologically significant.The WQI summary does not include non-standard elements like metals. For temperature, pH, oxygen, and fecal coliform bacteria, the WQI is based on criteria in Washington’s Water Quality Standards, WAC 173-201A.
For nutrient and sediment measures where standards are not specific, results are based on expected conditions in a given region. Multiple constituents are combined and results aggregated over time to produce a single score for each station and each year.