Blacktail Dam is a 155-acre recreational reservoir located 25 miles north of Williston, North Dakota. The lake features one boat landing on the south side and is bordered by residential areas and campgrounds. Both motorized and non-motorized watercraft are permitted on the water.

Recent water quality monitoring has identified recurring challenges. The lake experiences elevated nutrient levels which can contribute to algae blooms, particularly during summer months. High suspended solids have been documented, which can affect water clarity and aquatic habitat. Blue-green algae blooms have occurred, prompting occasional health advisories.

The surrounding watershed encompasses 17,500 acres of agricultural fields and native grassland. Facilities include a boat dock, boat ramp, and restrooms. The shoreline offers multiple access points for paddlers, with 38 developed campsites available for overnight stays. Additional amenities include picnic areas and several playgrounds.

For paddlers planning extended stays, the park offers both primitive tent sites ($10/night) and electrical hookup sites ($15/night). There are 9 dedicated tent sites and 55 electrical sites. Campfires are permitted only in designated fire rings.

The lake is part of a larger recreational complex that includes a 9-hole golf course on the north side. Water quality tests show metal concentrations in the water are generally very low. The lake hosts a variety of fish species throughout its waters.

For safety considerations, paddlers should be aware that the lake can experience significant algae blooms during warm weather periods. Given the lake's relatively small size and multiple use nature, paddlers should also stay alert for motorized boat traffic.