Reservoir · South Dakota · United States · BOR RISE
Pactola Reservoir
Pactola Reservoir and Dam
71.4% full
Capacity
69.03 hm³
Volume stored
49 hm³
Vs month average
83% of normal
Coordinates
44.072°N, 103.488°W
Last updated
2026-10-28
Current fill
71.4%vs 7 days ago
+0.3 ppgaining
vs 1 year ago
-13.8 ppyear-over-year
7-day trend
→stable
Drought context
Storage vs October average
83%of normal
71.4% full on 2026-10-28, against an average of 86.5% for October across 6 years of readings (-15.1 points).
Drought Monitor at this site · 27 October 2026
D1moderate drought
The ground at Pactola Reservoir's coordinates falls inside the D1 area of the weekly U.S. Drought Monitor map. That describes local conditions — rainfall, soil moisture, streamflow — not the reservoir's storage. South Dakota drought figures →
Data source: BOR RISE — US Bureau of Reclamation — daily reservoir storage volume. Capacity is the design (normal full-pool) capacity from the US National Inventory of Dams (NID); fill % = current volume ÷ design capacity. Last reading: 2026-10-28.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 44.072°N, 103.488°W · Open in Google Maps
About Pactola Reservoir
As of October 28, 2026, Pactola Reservoir is filled to 71.4% of its total capacity, holding 49.31 hm³ of water out of a maximum 69.03 hm³. At this level the reservoir is within its normal operating range.
Over the most recent week on record the fill level has held broadly steady (+0.3 pp), and it is 13.8 points below its level on the same date a year earlier.
Across the readings we hold for Pactola Reservoir — 1951 data points between October 30, 2021 and October 28, 2026 — the level has ranged from a low of 70.0% (September 16, 2026) to a high of 100.3% (July 3, 2023). On average the reservoir is fullest around June and at its lowest around October.
It is operated by BOR primarily for multiple purposes. It is at 44.072°N, 103.488°W.
Key facts
- Current fill level
- 71.4% of total capacity
- Water stored
- 49.31 hm³
- Total capacity
- 69.03 hm³
- 7-day change
- ▲ 0.3 pp
- Year-on-year
- ▼ 13.8 pp
- Primary use
- Multipurpose
- Operator
- BOR
- Coordinates
- 44.072°N, 103.488°W
- Last updated
- October 28, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 28 Oct 2026 | 71.4% | 49.31 |
| 27 Oct 2026 | 71.4% | 49.27 |
| 26 Oct 2026 | 71.3% | 49.23 |
| 25 Oct 2026 | 71.3% | 49.2 |
| 24 Oct 2026 | 71.2% | 49.16 |
| 23 Oct 2026 | 71.2% | 49.12 |
| 22 Oct 2026 | 71.1% | 49.08 |
| 21 Oct 2026 | 71.1% | 49.05 |
| 20 Oct 2026 | 71.0% | 49.01 |
| 19 Oct 2026 | 70.9% | 48.96 |
| 18 Oct 2026 | 70.9% | 48.92 |
| 17 Oct 2026 | 70.8% | 48.88 |