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South DakotaReservoir, 6,106 acres, Butte County

Belle Fourche Reservoir conditions today

Shoreline: USGS National Hydrography Dataset

Right now on Belle Fourche

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Best window

0pm to 0pm

score

Wind

00kt

Gusts 00

Direction

NE

Blowing from

Air temp

00°F

High

Rain

Dry

next 6 hours

Water level

57.24ft

Up 0.33 ft this week

Sailing

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Reading the forecast

Kayak and SUP

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Reading the forecast

Power boating

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Fishing

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Reading the forecast

Hour by hour

Next 24 hours
Wind and gusts0 to 30+ ktScoreGood, caution, stay ashoreNightBest windowArrows point where the wind blows to.

Outlook. Monday: ESE wind 12 to 15 kt, gusts to 25 kt, high near 42°F. Tuesday: W wind 6 to 21 kt, gusts to 34 kt, high near 61°F.

7-day wind forecast

Live radar

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LightHeavy

Last hour of NOAA MRMS radar, 1 km resolution. Map data © OpenStreetMap contributors, OpenMapTiles, OpenFreeMap.

Water level

Full report

57.24ft NGVD29

+0.33 ft in 7 days
Sep 25Oct 10Oct 25

Reading from Oct 26, 2026.

Belle Fourche Reservoir was at 57.24 ft on October 26, rising 0.33 ft over the past week.

Lake facts

Type
Reservoir
State
South Dakota
County
Butte County
Surface area
6,106 acres
USGS gauge
06435000, Belle Fourche Reservoir near Belle Fourche SD
Coordinates
44.7341° N, 103.7051° W

About Belle Fourche Reservoir

Belle Fourche Reservoir is a 6,106-acre reservoir in Butte County, South Dakota.

We read the level from USGS gauge 06435000, listed as Belle Fourche Reservoir near Belle Fourche SD. Wind and weather come from the National Weather Service grid cell over the lake, so the numbers describe open water rather than the nearest airport.

It is big enough for a proper sail but small enough that waves rarely get serious. Gusts off the shoreline are usually the bigger story than wave height. 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.

Belle Fourche Reservoir questions

Is it windy on Belle Fourche Reservoir today?

The National Weather Service forecast for the lake from October 26: Monday: ESE wind 12 to 15 kt, gusts to 25 kt, high near 42°F. 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.

What is the water level at Belle Fourche Reservoir right now?

Belle Fourche Reservoir was at 57.24 ft on October 26, rising 0.33 ft over the past week.

How big is Belle Fourche Reservoir?

Belle Fourche Reservoir covers about 6,106 acres (9.5 square miles) of surface water.

Nearby lakes

If Belle Fourche is blown out, these are the closest alternatives. Tap through for their conditions.