Protecting Oregon's Environment
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Oregon Department of Environmental Quality

Laboratory and Environmental Assessment

Groundwater Monitoring    

Air Quality Index 
Air Quality Monitoring
LASAR Database
Guidance and Quality Assurance
Technical Reports
Volunteer Monitoring
Water Quality Index
Water Quality Monitoring

Groundwater Quality Reports

  • Deschutes Basin Groundwater
    The Deschutes Basin is located in north-central Oregon, and encompasses all or portions of eleven counties. Major land uses in the basin include forest (65%), rangeland (25%), and agricultural-urban-industrial (10%)
  • North Coast Basin Groundwater
    The North Coast Basin occupies about 2,500 square miles in the northwest corner of Oregon. The North Coast Basin is one of the 18 major river drainage basins in the state
  • Willamette Basin Groundwater
    The Willamette Basin is a 12,000 square mile area in northwestern Oregon. The Willamette and Sandy Rivers drain the basin.
  • Klamath Basin Groundwater
    The Klamath Basin is located in south-central Oregon, and encompasses most of Klamath County, and portions of Jackson and Lake counties. The major land use in the Klamath Basin is Forest (75%). Agricultural land and Range land each comprise about ten percent of the basinís area. The remaining land use categories (water/wetland, urban, and mountainous terrain) make up about five percent of the basinís total area.
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For more information about DEQ's Laboratory and Environmental Assessment Program please email LEAP.


Oregon Department of Environmental Quality
Headquarters: 700 NE Multnomah Street, Suite 600, Portland, OR 97232
Phone: 503-229-5696 or toll free in Oregon 1-800-452-4011
Oregon Telecommunications Relay Service: 1-800-735-2900  FAX: 503-229-6124

The Oregon Department of Environmental Quality is a regulatory agency authorized to protect Oregon's environment by
the State of Oregon and the Environmental Protection Agency.

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