Lake SakakaweaLake Sakakawea at a Glance
About Lake Sakakawea
Lake Sakakawea is a large reservoir on the Missouri River in central North Dakota, United States, created by the Garrison Dam. The dam was completed in 1953 and the reservoir is the largest in the state.
Boating, fishing and shoreline recreation are the primary activities, with multiple marinas, public boat ramps and state park facilities. Anglers target species such as walleye, northern pike and smallmouth bass, and the lake supports extensive recreational fishing and boating use.
The lake was formed when the U.S. Army Corps of Engineers completed Garrison Dam in 1953 as part of flood control, hydropower and irrigation projects on the Missouri River. Creation of the reservoir flooded large areas and reshaped local land use and settlement patterns, including impacts on the Fort Berthold Reservation.
The reservoir lies in central North Dakota, extending across several counties; the town of Garrison sits near the dam. Much of the shoreline fronts rural and reservation land in a broadly rolling prairie and badlands landscape.
- Fishing and boating: Fishing for walleye, northern pike and smallmouth bass is a major draw, with multiple marinas and public boat ramps around the lake.
- Creation and scale: The reservoir was created by the Garrison Dam, completed in 1953, and is the largest reservoir in North Dakota.
What to See#
- Garrison Dam: The Garrison Dam sits at the eastern end of the reservoir and is the structure that created the lake; it is managed by the U.S. Army Corps of Engineers and includes boat access and recreation facilities.
- Recreation areas: Fort Stevenson State Park and several public boat ramps provide launch points and day-use facilities on the lake’s shoreline.
Best Time to Visit Lake Sakakawea
Summer is the main recreation season; spring and winter feature specific wildlife and recreational opportunities but can be extreme.
Weather & Climate near Lake Sakakawea
Lake Sakakawea's climate is classified as Warm-Summer Continental - Warm-Summer Continental climate with warm summers (peaking in July) and freezing winters (coldest in January). Temperatures range from -18°C to 27°C. Semi-arid with limited rainfall.
| Month | Comfort | Temp | Feels | Rain | Sky | Humidity | Wind | UV | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | - | -18° - -7° | -21° | 12 mm | - | - | 4.8 m/s | - | - |
| February | - | -14° - -3° | -15° | 10 mm | - | - | 4.8 m/s | - | - |
| March | - | -8° - 2° | -8° | 17 mm | - | - | 4.9 m/s | - | - |
| April | - | -2° - 11° | 1° | 40 mm | - | - | 5.1 m/s | - | - |
| May | - | 5° - 17° | 11° | 60 mm | - | - | 5.2 m/s | - | - |
| June | - | 10° - 23° | 17° | 81 mm | - | - | 4.6 m/s | - | - |
| July | - | 13° - 27° | 20° | 57 mm | - | - | 4.1 m/s | - | - |
| August | - | 13° - 27° | 20° | 41 mm | - | - | 4.2 m/s | - | - |
| September | - | 8° - 21° | 14° | 42 mm | - | - | 4.4 m/s | - | - |
| October | - | 2° - 14° | 5° | 24 mm | - | - | 4.7 m/s | - | - |
| November | - | -6° - 4° | -6° | 12 mm | - | - | 4.6 m/s | - | - |
| December | - | -14° - -3° | -16° | 12 mm | - | - | 4.7 m/s | - | - |
How to Get to Lake Sakakawea
Lake Sakakawea is accessed from several towns including New Town and Garrison along US routes. Major approaches use ND state highways; the Garrison Dam offers visitor facilities. A car is the best way to explore the reservoir and scattered boat ramps and state parks.
Tips for Visiting Lake Sakakawea
- Visit Buoy and Marina areas early in the morning for smooth water and active wildlife.
- Expect variable winds - consult local fishing charters for best spots and seasonal targets.
- Watch for tribal lands and respect posted access points along the reservoir.