Black Sandy State Park
| Black Sandy State Park | |
|---|---|
Moonrise over Hauser Lake near Black Sandy | |
| Location | Lewis and Clark County, Montana, United States |
| Nearest city | Helena, Montana |
| Coordinates | 46°45′25″N 111°53′23″W / 46.75694°N 111.88972°W |
| Area | 43 acres (17 ha) |
| Elevation | 3,904 ft (1,190 m) |
| Designation | Montana state park |
| Established | 1980 |
| Visitors | 43,966 (in 2023) |
| Administrator | Montana Fish, Wildlife & Parks |
| Website | Black Sandy State Park |
Black Sandy State Park is a public recreation area on the western shore of Hauser Lake reservoir, an impoundment of the Missouri River, located thirteen miles (21 km) northeast of Helena in Lewis and Clark County, Montana, in the United States. The park is along the Lewis and Clark National Historic Trail.