Gray Reef Dam, Glendo Unit, PSMBP, is on the North Platte River about 27 miles southwest of Casper, Wyoming and 2 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.

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