Gross Reservoir Expansion Project

Recreation During Construction


Beginning May 9 and expected to last until May 20, Denver Water will close all recreation access to Gross Reservoir as contractors build access improvements on the north side ahead of the upcoming boating season. Please do not plan to recreate at Gross Reservoir during this time. Updates will be made as the work progresses.

Read the full press release here.

Directions to Gross Reservoir:

From the Denver metro area:

  • Take Highway 93 north from Golden to Highway 72.
  • Turn left (west) on Highway 72 toward Pinecliffe to County Road 77/Gross Dam Road. The intersection has the CCCIA Hall and United Power offices. If you have passed Last Stand Tavern on the left or the fire station on the right you have gone too far.
  • Gross Dam Road will take you to both the north and south access points.

From Boulder:

  • Take Flagstaff Road west until it turns into eastern Gross Dam Road.



Latest News / Blog

Gross Reservoir community information sessions

Denver Water invites Gross Reservoir neighbors to join us for information sessions on May 21, between 10 a.m. and 5 p.m., at the Coal Creek Canyon Improvement Association Hall. Gross Reservoir Expansion Project representatives will provide an update on project...

read more