Site Details

descriptions and directions

Cottonwood Marsh photo by Peter Burke

Accessible Baseline Reservoir - Boulder County
Ownership: Private (see directions for access)
Description: Though private, this lake can be well scanned from the wide shoulder of Cherryvale Road along its southwest shore. When it has open water during the colder months, it can be a good spot to turn up waterbirds including loons, gulls and diving ducks. Occasional rarities are reported.

Habitat: Pond/Lake/Reservoir
Directions: Baseline Reservoir is in southeast Boulder. From Foothills Parkway (CO 157) in Boulder, head east on Baseline Road approximately one mile to the "T" intersection with Cherryvale Road. The best scanning spots are a half-mile south of this intersection along Cherryvale. A left turn on Cherryvale will reconnect you with eastbound Baseline Road, which jogs around the lake. You can see the lake from this part of Baseline, but there are no good places to pull over and scan. On the south side of Baseline just east of the lake is a parking lot which provides access to the open space trail that flanks the southeast shore of the lake.
Other Wildlife:
Other Attractions:

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eBird Seasonal Bar Chart

Latest Baseline Reservoir Sightings from eBird


CBRC Records from Baseline Reservoir

SpeciesAccession No.Date(s)
Tundra Swan2007-125 11/4/2007
Black Scoter8-75-14610/26/1975 - 11/30/1975
Short-billed Dowitcher19-76-810/4/1975
Red Phalarope2010-135 10/30/2010 - 10/31/2010
Lesser Black-backed Gull23-93-202/20/1993 - 2/27/1993
Lesser Black-backed Gull2000-56 
Red-throated Loon2011-158 11/8/2011