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Antero Reservoir

Antero Reservoir to be emptied this summer
As part of a major rehabilitation project to bring Antero Dam in line with current engineering standards, Denver Water will begin draining this summer.

Due to the need to drain, Colorado Parks and Wildlife (CPW) will be adjusting the bag and possession limit to eight fish, with no size restrictions, effective Jan. 10.

Draining Antero Reservoir: Where will all that water go?
And 9 more facts about rehabbing Denver Water’s 100-year-old Antero Dam

Antero Reservoir
An extinct volcano, Buffalo Peaks, looms above Antero.

Owned and Operated by Denver Water
Reservations: Not Accepted
Elevation: 8,942 feet (2,656 meters) — high water line
Capacity: 19,881 acre feet (1 acre foot = 325,851 gallons)
Denver Water Customer Care: 303-893-2444
U.S. Forest Service: 719-545-8737
Colorado Parks and Wildlife: 303-291-7227


Antero is derived from the Spanish word "first," as it was the first dam on the South Platte River near the river's origin. Antero Dam is an earth-fill dam built in 1909. Geologists believe the reservoir occupies the site of a former lakebed, probably no more than 300 years old. Green Lake lies submerged within Antero Reservoir.


  • Take Highway 285 to Fairplay
  • About a mile south of Fairplay veer southeast on Highway 9 toward Hartsel
  • After about 15 miles you will reach a stop sign at the intersection with Higway 24. Turn right (west) on Highway 24
  • The entrances to Antero Reservoir will be on your right
  • The entrance to the north access will be first and the entrance to the south access next

Seasonal Information

Open year round

Operating Hours

24 hours a day

Special Events

Must be approved by Denver Water.

Recreation Opportunities

Overview of available activities

Motor Boating

All boats must be inspected for aquatic nuisance species before entering the water. Inspection stations are located at each boat ramp.

For the remainder of the 2014 season, the south boat ramp will be open daily until Sept. 30. The north boat ramp will be open four days a week, Friday through Mondays until Sept. 30; starting Oct. 1, the north boat ramp will be open daily until Oct. 31.

Boating includes boat fishing, sail boating and recreational boating. Boaters must observe the Colorado Boating Statues and Regulations.

Current water elevation at Antero.

Small Water Craft
small watercraft

Portable crafts allowed include kayaks, canoes and inflatable crafts.

Only the south boat ramp may be used to launch small car top carried boats or small trailered boats.

Both lake and stream fishing is available. See Colorado Parks and Wildlife’s PDF document fishery survey summary for Antero.
Ice Fishing
ice fishing
Ice fishing when conditions permit. Denver Water does not monitor ice conditions and those entering onto the ice should be aware of changing ice conditions and proceed at their own risk.
There are 38 campsites available at the south side campground and boat ramp.
The north side area is day use area only, no camping is allowed.

Note: Water contact sports such as swimming, water skiing, wading, and scuba diving are prohibited.

Other rules and regulations.