Gray Reef Reservoir

Quick Facts

Gray Reef Reservoir


(307) 235-9325

Map Directions

Things To Do


Gray Reef Dam, Glendo Unit, is on the North Platte River about 27-miles southwest of Casper, Wyoming and two miles downstream from Alcova Dam. Although the reservoir has a total capacity of 1,800 acre-feet with a surface area of 182-acres, under its prescribed function as a reregulating reservoir, the water surface elevation of Gray Reef fluctuates widely from nearly full to nearly empty on a daily basis. Therefore, fish are not stocked in the reservoir. A barrier-free fishing pier, restroom and primitive campground are located below the dam. Canoes and other small watercraft may be launched from the campground. Available species include brown trout, cutthroat trout, rainbow trout, and walleye. Rainbow and cutthroat are stocked in the river below Gray Reef Dam. A boat ramp and parking lot are located one-half mile downstream of the dam.

Map of Gray Reef Reservoir

Latitude, Longitude: 42.563069, -106.693554



  • Boating

    There is one boat launch ramp.

  • Camping

    Primitive camping is available.

  • Fishing

    Fishing is allowed with a license.

  • Hiking

    There are many trails.

  • Horseback Riding

    Horseback riding is allowed.

  • Hunting

    Follow Wyoming regulations.

  • Picnicking

    Picnic areas are primitive.

  • RVing

    There are no RV hook-ups.


Open year-round.



Access is from U.S. 220 via County Road 412.

Phone Numbers


(307) 235-9325