East Portal Reservoir is a feature of the Colorado - Big Thompson Project. One concession campground for overnight camping accommodates 90 campsites. A day-use picnic area is located nearby. Water surface available for recreation is 2 acres. No boating allowed. The reservoir is not managed as a fishery, but an occasional rainbow trout is caught in this regulatory reservoir. The site has a trailhead, which provides access to Rocky Mountain National Park. Facilities are closed in winter due to ice and snow.
Site is near Loveland, Colorado. On the Wind River at East Portal of Alva B. Adams Tunnel, 4.5 miles southwest of Estes Park.