State

Lake beaches and swimming lakes in South Dakota

South Dakota has 11 lakes and reservoirs in this guide. 9 of them are reservoirs held back by a dam and 2 are natural lakes. The largest is Lake Oahe at about 370,000 acres. The deepest water on record here is at Lake Oahe, about 203 feet. Rivers that feed or drain them include the Missouri River, the Cheyenne River and the Big Sioux River. 4 of these lakes have a public gauge, so their water level on this site is a real reading rather than an estimate. The agency behind the most lakes here is USACE Omaha District. Across the state we map 4 named swimming spots and access points from federal and state sources.

2Lakes
2Swimming spots

Lakes in South Dakota on the map

Click a marker to open the lake page.

Lakes in South Dakota

Each page has the live water level, weather, access points and sources.

Pactola Reservoir

South Dakota · Pennington County

Pactola Reservoir

Pactola Reservoir is a 800-acre reservoir on the Rapid Creek in South Dakota. You will find it in Pennington County. It is…

Reservoir2 beaches
Angostura Reservoir

South Dakota · Fall River County

Angostura Reservoir

Angostura Reservoir is a 4,407-acre reservoir on the Cheyenne River in South Dakota. It lies in Fall River County. It is managed…

Reservoir

Current lake levels in South Dakota

Readings are refreshed from the operating agency and stamped with the time they were taken. A falling pool widens the beaches and shortens the ramps.

LakeLevelFull poolHow full
Pactola Reservoir58.60 ft—no percent published
Angostura Reservoir——no percent published