Appointments required at Walnut Street Center.
We are responsible for water supply management in the Tualatin, Lake Oswego and Lower Willamette Drainage Basins. We are a contact for local landowners, elected officials and watershed councils. Our responsibilities include:
- Collecting streamflow measurements and groundwater level data
- Maintaining gaging stations
- Well inspections
- Routine dam safety inspections
- Stream recovery efforts
- Providing information about water rights and Oregon Water Law
- Mediating disputes between water users
- Regulating water use during shortages
Look up Water Rights
![Icon of a water droplet](https://s3.us-west-2.amazonaws.com/washingtoncountyor.gov/styles/max_1300/s3/2023-12/LUT%20Icons%20-%20Water%20Rights.jpg?VersionId=hTeKUZaS_x1Q0AFnbO_8UNwpR8_X7i8P&itok=fcebAa0C)
Visit the Oregon Water Resources Department to find information and apply for new water rights.
Near Real Time Hydrographics Data
Search for Well Report
![Icon of web window accessing information.](https://s3.us-west-2.amazonaws.com/washingtoncountyor.gov/styles/max_1300/s3/2023-12/LUT%20Icons%20-%20Well%20Report.jpg?VersionId=KihIWqO8fAm4A.N7I3FVqmsd4Uz4l_VV&itok=a0loQ0Jb)
Learn about well depths, yield, and other information about wells on specific properties.
Dam Safety
![Icon of a dam with water below](https://s3.us-west-2.amazonaws.com/washingtoncountyor.gov/styles/max_1300/s3/2023-12/LUT%20Icons%20-%20Dam.jpg?VersionId=O5d46A7dLSzgYvv_FSZOplaV0aJGmyrk&itok=UmnJ67ls)
Learn about the Dam Safety Program and see which dams we inspect.
Program information
Location
![Walnut Street Center entryway](https://s3.us-west-2.amazonaws.com/washingtoncountyor.gov/styles/crop_330_x_165/s3/2024-04/1400%20SW%20Walnut%20Street%20Center_1.jpg?VersionId=8ScHDodwbnEeB.VrtmfwCKILlt.FvT7t&itok=lRVpWmiC)
Watermaster
1400 SW Walnut Street
Suite 240
Hillsboro, Oregon 97123
Suite 240
Hillsboro, Oregon 97123