Enjoy Belle Fourche Reservoir with the best in boat rentals, jet ski, waverunners, and water sport tours for all ages. The lake was created in 1911 as a result of the construction of Orman Dam on Owl Creek. The reservoir has an average depth of twenty-five feet, but has areas as deep as sixty feet at full capacity. Belle Fourche Reservoir is 8000 acres and makes for a fun location to enjoy the outdoors. Common activities at Belle Fourche include boating, fishing, ice fishing, ice skating, biking, wakeboarding, water skiing, wakesurfing, SUP, kneeboarding, wake skating, slalom skiing, camping, cook outs, water skiing and fossil hunting.