LakeLevelIs Deerfield Reservoir low right now?
Deerfield Reservoir was at 5,903.12 ft on October 10, 2026. That is 3.20 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 0.10 ft a day.
Deerfield Reservoir on Oct 10 in past years
20255,905.4−2.3
20245,904.6−1.5
20235,906.5−3.4
20225,907.2−4.1
20215,906.4−3.3
20205,906.4−3.3
Daily levels, last two weeks
| Date | Level (ft) | Change |
|---|---|---|
| Oct 10 | 5,903.14 | −0.08 |
| Oct 9 | 5,903.22 | −0.11 |
| Oct 8 | 5,903.33 | −0.11 |
| Oct 7 | 5,903.44 | −0.12 |
| Oct 6 | 5,903.56 | −0.10 |
| Oct 5 | 5,903.66 | −0.10 |
| Oct 4 | 5,903.76 | −0.11 |
| Oct 3 | 5,903.87 | −0.10 |
| Oct 2 | 5,903.97 | −0.09 |
| Oct 1 | 5,904.06 | −0.04 |
| Sep 30 | 5,904.10 | −0.03 |
| Sep 29 | 5,904.13 | −0.01 |
| Sep 28 | 5,904.14 | −0.01 |
| Sep 27 | 5,904.15 | −0.02 |
About Deerfield Reservoir
- 10-year range
- 5,903.1 ft (October 10, 2026) to 6,355.5 ft (April 8, 2025)
- Operated by
- U.S. Army Corps of Engineers
- Data
- U.S. Army Corps of Engineers — NWDM district, DFSD
- Datum
- LOCAL
Lakes near Deerfield Reservoir
- Pactola ReservoirSouth Dakota · 15 mi 4,558.2 ft +0.3 wkLower than usual for this time of year
- Cottonwood Springs ReservoirSouth Dakota · 42 mi 3,848.4 ft −0.1 wkLower than usual for this time of year
- Cold Brook ReservoirSouth Dakota · 42 mi 3,585.1 ft −0.0 wkAt full pool
- Belle Fourche ReservoirSouth Dakota · 49 mi 2,956.8 ft +0.3 wkLower than usual for this time of year
- Angostura ReservoirSouth Dakota · 51 mi 3,169.3 ft −103.3 wkLower than usual for this time of year
- Keyhole ReservoirWyoming · 55 mi 4,083.8 ft −0.1 wkLower than usual for this time of year
Questions
Is Deerfield Reservoir low right now?
Deerfield Reservoir was at 5,903.12 ft on October 10, 2026. That is 3.20 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 0.10 ft a day.
How often is the Deerfield Reservoir 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. Army Corps of Engineers (NWDM district, DFSD). Readings are provisional and can be revised.