Municipal Stormwater Permit Outfall Data

Special Condition S8.D of the 2007-2012 Phase I Municipal Stormwater Permit required permittees to collect and analyze data to evaluate pollutant loadings of stormwater discharged from different land uses: high density (HD) residential, low density (LD) residential, commercial, and industrial.

To meet the S8.D requirement, Phase I Permittees collected water quality and flow data, sediment data, and toxicity information from stormwater discharges during storm events.

Data and Resources

Additional Info

Field Value
Source https://data.wa.gov/resource/d958-q2ci
Author ECY DataSync
Last Updated July 22, 2025, 20:38 (UTC)
Created July 22, 2025, 20:38 (UTC)
1. Water Quality Program
2. Data Disclaimer - https://ecology.wa.gov/About-us/Accountability-transparency/Website-information/Copyright-information
3. http://www.ecy.wa.gov/programs/wq/stormwater/municipal/s8dswmonitoring.html
4. https://fortress.wa.gov/ecy/publications/SummaryPages/1503001.html
Category Natural Resources & Environment
Originator Washington State Department of Ecology
Period of Time 2012-2017
Posting Frequency One Time
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harvest_source_id c4128faf-39ff-4aa3-918e-8a395702cab3
harvest_source_title washington-state