Site Details

descriptions and directions

Cottonwood Marsh photo by Peter Burke

Accessible Boulder Creek & 75th Street - Boulder County
Ownership: None Listed
Description: Adjacent to the Walden Ponds complex and connected to it by footpath, this birding spot has its own parking lot and is often birded separately. The creek here used to be kept open year-round thanks to the effluent from the Boulder water treatment plant. Now the outlet has been moved downstream from 75th street, and the birding is not as good west of the bridge. Access is restricted east of the bridge due to raptor nesting. The trees along the creek here can be excellent for spring migrants, including vagrant warblers.

To reach Walden Ponds on foot from the parking lot, just continue west along the creekpath and then follow it south along the east side of the water treatment plant. The woods along the creek to the west of the bend in the path, unfortunately, are private.

Habitat: Stream, Lowland Riparian, Grassland/Prairie
Directions: The parking lot is on the west side of 75th Street just south of its intersection with Jay Road, about 0.5 mile north of the turnoff to Walden Ponds and a little less than a mile north of Valmont Drive, east of Boulder.
Other Wildlife:
Other Attractions:

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eBird Seasonal Bar Chart

Latest Boulder Creek & 75th Street Sightings from eBird


CBRC Records from Boulder Creek & 75th Street

SpeciesAccession No.Date(s)
Alder Flycatcher2011-066 5/29/2011
Black Phoebe2015-038 04/03/2015
Blue-headed Vireo2011-136 10/8/2011
Blackburnian Warbler2011-061 5/25/2011
Yellow-throated Warbler2011-037 4/22/2011 - 4/24/2011