South DakotaReservoir, 32,124 acres
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1,207.84ft
Down 0.12 ft this week
Sailing
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Kayak and SUP
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Power boating
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Fishing
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Outlook. Monday: ENE wind 9 to 12 kt, gusts to 21 kt, high near 51°F, thunderstorms possible. Tuesday: SSW wind 4 to 8 kt, gusts to 15 kt, high near 60°F.
7-day wind forecastLoads when you scroll here
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Last hour of NOAA MRMS radar, 1 km resolution. Map data © OpenStreetMap contributors, OpenMapTiles, OpenFreeMap.
1,207.84ft NGVD29
-0.12 ft in 7 days0.18 ft above the October normal
Reading from Oct 26, 2026. Shaded band: range of October averages on record; dashed line is the typical level.
Lewis and Clark Lake was at 1,207.84 ft on October 26, falling 0.12 ft over the past week. That is above normal for October: the typical October level is 1,207.66 ft, so the lake is 0.18 ft above its usual mark.
Background reading: Lewis and Clark Lake on Wikipedia
Lewis and Clark Lake covers about 32,124 acres in South Dakota and is classed as a reservoir. The reservoir dates to 1952. At its deepest it reaches roughly 46 ft.
Water level on this page comes from the U.S. Army Corps of Engineers reading at Gavins Point Dam & Reservoir, published through the Corps' CWMS data service. Wind, gusts and rain come from the National Weather Service forecast grid that covers the water.
With this much open water, waves build quickly when the wind lines up with the long axis of the lake. Pick a launch on the upwind shore on breezy days and the ride home is easier. Reservoir levels move with releases and inflow, so ramps and beaches can change week to week. The water level page tracks that day by day.
The go or no-go calls above are a starting point, not a guarantee. Read how we score conditions, and always check local rules and posted warnings before you launch.
The National Weather Service forecast for the lake from October 26: Monday: ENE wind 9 to 12 kt, gusts to 21 kt, high near 51°F, thunderstorms possible. The panel at the top of this page refreshes the current wind, gusts and direction when you open it and turns them into a call for sailing, paddling, power boating and fishing.
Lewis and Clark Lake was at 1,207.84 ft on October 26, falling 0.12 ft over the past week. That is above normal for October: the typical October level is 1,207.66 ft, so the lake is 0.18 ft above its usual mark.
Lewis and Clark Lake covers about 32,124 acres (50 square miles) of surface water.
The deepest point of Lewis and Clark Lake is roughly 46 ft.
The dam that forms Lewis and Clark Lake was completed in 1952.
If Lewis and Clark is blown out, these are the closest alternatives. Tap through for their conditions.