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Contact Us


U.S. Army Corps of Engineers
ATTN: Water Quality
4735 East Marginal Way South
Seattle, WA 98134


Reservoir Control Center: 206.764.6702

Water Quality Introduction


The Water Management Section of the Hydrology and Hydraulics Branch runs the Seattle District’s water quality program.  The program is designed to monitor water quality at Seattle District projects and in waters located within the Seattle District’s boundaries.  Objectives and goals of the water quality program include, but are not limited to:

  • Define baseline water quality and sediment quality conditions for each project
  • Establish and maintain a water quality monitoring and data evaluation program
  • Provide water quality data required for real-time project regulation
  • Identify existing and potential water quality problems, and develop appropriate solutions
  • Coordinate, communicate, and collaborate with state, tribal, and federal agencies on Total Maximum Daily Loads (TMDLs), and other activities that may affect water quality
  • Evaluate water/sediment interactions and impacts on water quality
  • Monitor and evaluate physical, chemical and biological processes
To meet the objectives and goals listed above, the Water Management Section performs routine water quality data collection and evaluation at district projects, implements special studies and research projects, and coordinates monitoring efforts with local, state, tribal, and federal agencies.

For Water Quality Monitoring Plans and Reports, please visit the Water Quality Documents page.

Water Quality Projects and Geography

The Seattle District covers most of Washington, Northern Idaho, and Northwestern Montana. The Water Quality Program is active at the follwoing projects:

For Water Quality Monitoring Plans and Reports, please visit the Water Quality Documents page.