Harvey Gap State Park – Rifle, CO | Grass Valley Reservoir

Harvey Gap is centered around a magnificent, turquoise alpine lake called Grass Valley Reservoir. It’s located just around the corner from neighbor state parks, Rifle Falls and Rifle Gap in Rifle, .

The park is open year round for day-use. Pets, unfortunately, are not welcome at Harvey Gap. The water is a cool shade of blue, due to its unique mineral content. The main attractions are water based including fishing and boating.

It’s day-use only, so no camping. Campgrounds can be found at nearby Rifle Falls and Rifle Gap state parks. Additional recreation can be found in the White River National Forest.

Harvey Gap State Park — Pets are not allowed at Harvey Gap.

Activities at Grass Valley Reservoir

Boating: Grass Valley Reservoir is closed to boating November 1 to March 31.

Motors must be 20 HP or less.
Each crew member must have life jacket available on boat.
Boat ramp is on south side of the lake.

Camping: No, day-use only.

Fishing: Small & largemouth bass, catfish, crappie, perch, northern pike and rainbow trout are common. Ice fishing in winter.

Hiking: There is no designated trail system.

Hunting: Allowed 100 yards from any building or Day Use Area and 50 feet from center-line of road. Waterfowl hunting is available on north end of the lake. Dogs are only permitted in that area and only during that time.

Picnicking: There are 30 picnic sites with grills.

Swimming: In the summer, swimming is popular. There is a swim beach at the south entrance of the Park. There is no life guard.

Visitor Center: Located at Rifle Gap State Park; has info, exhibits and a small gift shop.

Winter Recreation: Ice fishing is permitted when ice is thick enough. There are no groomed trails but the park is open to cross country skiing and snowshoeing.

A relaxing look down the lake.