The Boulder County Transportation Department has turned over the responsibility of the Ditch and Reservoir Directory to the St. Vrain and Left Hand Water Conservancy District. They will be gathering the updates and publishing the Ditch and Reservoir Directory.

Ditch & Reservoir Directory

  • Boulder County Ditch Map
  • The St. Vrain and Left Hand Water Conservation District produces a Ditch and Reservoir Directory for all privately owned & maintained ditches in the county. Look for the link underneath the “Basin Contact Information and Ditch Directory” header.

Questions, corrections contact the St Vrain and Left Hand Water Conservancy District at 303-772-4060 or email office@svlhwcd.org.

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Transportation Department

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2525 13th Street
Boulder, CO 80304

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Hours: 8 a.m. - 4:30 p.m. M-F

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P.O. Box 471
Boulder, CO 80306