Lake levels › South Dakota

Lake Francis Case water level today

Lower than usual for this time of year

1,347.24ft

feet above sea level ·

vs normal for Oct 10−0.7 ft
24 hours−0.31 ft
7 days−2.3 ft
30 days−4.2 ft
vs a year ago−0.6 ft

Is Lake Francis Case low right now?

Lake Francis Case was at 1,347.24 ft on October 10, 2026. That is 0.72 ft below the typical level for October 10 — lower than in 9 of 10 past years. Over the past week the lake has been falling about 0.31 ft a day.

Last 12 monthsDaily level Normal range (10–90% of past years)
1,3421,3461,3501,3541,358NovDecJanFebMarAprMayJunJulAugSepOct

Lake Francis Case on Oct 10 in past years

20251,348.5−1.2
20241,348.2−1.0
20231,348.7−1.4
20221,348.2−1.0

Level on the same date each year, and how today compares.

Daily levels, last two weeks

DateLevel (ft)Change
Oct 101,347.32−0.23
Oct 91,347.55−0.29
Oct 81,347.84−0.26
Oct 71,348.10−0.34
Oct 61,348.44−0.50
Oct 51,348.94−0.04
Oct 41,348.98−0.54
Oct 31,349.52−0.43
Oct 21,349.95+0.16
Oct 11,349.79−0.22
Sep 301,350.01−0.13
Sep 291,350.14−0.20
Sep 281,350.34+0.13
Sep 271,350.21−0.29

Daily means of the operator's readings (midnight to midnight, local time).

About Lake Francis Case

10-year range
1,342.9 ft (December 21, 2025) to 1,357.0 ft (July 5, 2024)
Data
U.S. Geological Survey — USGS 06442996
Datum
NAVD88

Lakes near Lake Francis Case

Questions

Is Lake Francis Case low right now?

Lake Francis Case was at 1,347.24 ft on October 10, 2026. That is 0.72 ft below the typical level for October 10 — lower than in 9 of 10 past years. Over the past week the lake has been falling about 0.31 ft a day.

How often is the Lake Francis Case level updated?

The operator reports every 15 minutes to an hour. This page refreshes several times a day; the time of the latest reading is shown next to the level.

Where does this data come from?

U.S. Geological Survey (USGS 06442996). Readings are provisional and can be revised.