Lake Francis Case

Name: Lake Francis Case (South Dakota) water level
Creator: U.S. Geological Survey

At Chamberlain, SD · South Dakota · USGS gauge

Water level · NAVD88

1,342.82FT

Gauge elevation · no % full published

7 days −1.00 ft30 days −8.00 ft

Reading for Oct 25, 2026, 18:30 UTC · page refreshed Oct 25, 21:16 UTC
Source: U.S. Geological Survey (Water Data for the Nation)

Worth going today?This Afternoon

Windy or wet – use caution

Light wind, 99% chance of rain

Wind5 to 10 mph

Rain99%

Temp46°F

Level1,342.8 ft

This AfternoonRain Showers · 46°F
NE 5 to 10 mph · rain 99%

TonightRain Showers · 38°F
NE 10 to 15 mph · rain 97%

NWS forecast for the gauge location. Good = wind ≤ 10 mph and rain ≤ 30%; storms are flagged. Not safety advice – check local conditions, closures and warnings.

Field notes

On Oct 25, 2026, Lake Francis Case was at 1,342.82 (NAVD88) ft.

Over the past 7 days the lake has been falling (−1.00 ft), and it is −8.00 ft over 30 days.

Readings come from the USGS gauge “LAKE FRANCIS CASE AT CHAMBERLAIN, SD”. Gauge elevations are not directly comparable between lakes because each uses its own datum.

Lake facts

Gauge / station	LAKE FRANCIS CASE AT CHAMBERLAIN, SD
Elevation datum	ft (NAVD88)
Gauge location	43.8161, -99.3269

Nearby lakes

Merritt Reservoir113 mi SW · NE2,943.53 ft+1.06 ft Lake Kampeska130 mi NE1,718.40 ft−0.01 ft Calamus Reservoir138 mi S · NE2,234.30 ft−0.13 ft Davis Creek Reservoir170 mi S · NE2,056.54 ft−0.06 ft Shadehill Reservoir194 mi NW2,265.07 ft−0.16 ft

Common questions

Is Lake Francis Case rising or falling?

Over the last 7 days it changed −1.00 ft and over 30 days −8.00 ft.

How full is Lake Francis Case?

USGS publishes the water surface elevation for this gauge but not a percent-full figure, so we don't show one rather than estimate it.

How often is this page updated?

The page is rebuilt automatically every day from USGS's published data. Values can be revised later by the source agency.

Where does the data come from?

The U.S. Geological Survey's Water Data API (api.waterdata.usgs.gov), which publishes readings from USGS and partner gauges. Forecasts come from the National Weather Service.

Latest instantaneous reading; 7-day, 30-day and year-ago changes compare readings at the same hour. USGS data are provisional and subject to revision. This page is not affiliated with or endorsed by the USGS. See data sources.