How many lakes and reservoirs in South Dakota are tracked here?

6, of which 6 report a current pool-elevation reading. The rest report storage only, or lack a fresh reading and are not published.

Which South Dakota lakes report a %-full figure?

None of South Dakota's lakes in this dataset currently have a source-provided %-full figure — we show the bare level rather than estimate one.

Where does the data come from?

USGS Water Services and USACE CWMS Data, both public domain. See the methodology page for the exact endpoints and update cadence.

South Dakota lake & reservoir water levels

6 lakes tracked · 6 with a current elevation reading · USGS Water Services + USACE CWMS Data

South Dakota has 6 lakes and reservoirs tracked here — 6 with a current elevation reading, from USGS Water Services and USACE CWMS Data. Sort the table by level, storage, %-full, or trend, then open any lake for its full elevation-with-datum, trend sparkline, storage, and source-and-vintage stamp. Figures are provisional readings for reference — not for navigation or safety decisions.

Statewide totals South Dakota · USGS + USACE

Lakes tracked: 6
With elevation reading: 6
With %-full figure: 0

All South Dakota lakes

Every lake tracked in South Dakota. Click a column heading to sort, or filter by name. Elevation lakes are listed before storage-only lakes; a missing figure always shows "not reported," never an estimate.

Filter lakes

South Dakota lakes, elevation lakes first, by name.
		Datum			Trend
Belle Fourche Reservoir	66.99	NGVD29	—	—	↓Falling
Deerfield Reservoir	5.24	NGVD29	—	—	↓Falling
Lake Francis Case at Chamberlain	1,352.55	NAVD88	—	—	↑Rising
Lake Kampeska at Water Plant at Watertown	1,719.43	NAVD88	—	—	↑Rising
Mud Lake	1,033.10	NAVD88	—	—	↑Rising
Pactola Reservoir	64.74	NGVD29	—	—	↓Falling

Data: USGS Water Services (waterservices.usgs.gov) and USACE CWMS Data (cwms-data.usace.army.mil), retrieved 2026-07-14. Both public domain (a work of the U.S. Government, 17 U.S.C. §105).

Frequently asked questions

How many lakes and reservoirs in South Dakota are tracked here?: 6, of which 6 report a current pool-elevation reading. The rest report storage only, or lack a fresh reading and are not published.
Which South Dakota lakes report a %-full figure?: None of South Dakota's lakes in this dataset currently have a source-provided %-full figure — we show the bare level rather than estimate one.
Where does the data come from?: USGS Water Services and USACE CWMS Data, both public domain. See the methodology page for the exact endpoints and update cadence.

Explore

Read the methodology behind these figures, or search all lakes nationally from the home page.