Reservoir · South Dakota · United States · USACE CWMS
Pactola Dam & Reservoir
76.2% full
Capacity
69.03 hm³
Volume stored
53 hm³
Coordinates
44.075°N, 103.489°W
Last updated
2026-07-29
Current fill
76.2%vs 7 days ago
-0.1%losing
vs 1 year ago
-6.9%year-over-year
7-day trend
→stable
Data source: USACE CWMS — US Army Corps of Engineers — 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: 2026-07-29.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 44.075, -103.489 · Open in Google Maps
About Pactola Dam & Reservoir
As of July 29, 2026, Pactola Dam & Reservoir is filled to 76.2% of its total capacity, holding roughly 53 hm³ of water out of a maximum 69 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 (-0.1 pts), and it is 6.9 points below its level on the same date a year earlier.
Across the readings we hold for Pactola Dam & Reservoir — 1821 data points between July 31, 2021 and July 29, 2026 — the level has ranged from a low of 76.2% (July 29, 2026) to a high of 100.3% (July 4, 2023). On average the reservoir is fullest around August and at its lowest around January.
It is operated by USACE primarily for multiple purposes. It lies within the South Dakota basin at 44.075°N, 103.489°W.
Key facts
- Current fill level
- 76.2%
- Water stored
- 53 hm³
- Total capacity
- 69 hm³
- 7-day change
- ▼ 0.1 pts
- Year-on-year
- ▼ 6.9 pts
- Primary use
- Multipurpose
- River basin
- South Dakota
- Operator
- USACE
- Coordinates
- 44.075°N, 103.489°W
- Last updated
- July 29, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 29 Jul 2026 | 76.2% | 53 |
| 28 Jul 2026 | 76.3% | 53 |
| 27 Jul 2026 | 76.4% | 53 |
| 26 Jul 2026 | 76.6% | 53 |
| 25 Jul 2026 | 76.7% | 53 |
| 24 Jul 2026 | 76.8% | 53 |
| 23 Jul 2026 | 76.9% | 53 |
| 22 Jul 2026 | 77.1% | 53 |
| 21 Jul 2026 | 77.2% | 53 |
| 20 Jul 2026 | 77.4% | 53 |
| 19 Jul 2026 | 77.5% | 54 |
| 18 Jul 2026 | 77.7% | 54 |
Frequently asked questions
What is the current water level of Pactola Dam & Reservoir?
As of July 29, 2026, Pactola Dam & Reservoir is at 76.2% of its capacity, holding approximately 53 hm³ of water, according to USACE CWMS (US Army Corps of Engineers) data.
Is Pactola Dam & Reservoir reservoir full?
No. As of July 29, 2026, Pactola Dam & Reservoir is within its normal operating range at 76.2% of its capacity, so it is not full.
Is the water level at Pactola Dam & Reservoir rising or falling?
The level at Pactola Dam & Reservoir has been broadly stable over the latest week on record (-0.1 points).
How much water can Pactola Dam & Reservoir hold?
Pactola Dam & Reservoir has a total capacity of 69 hm³.
Where is Pactola Dam & Reservoir reservoir located?
Pactola Dam & Reservoir is located in South Dakota, United States, within the South Dakota basin (coordinates 44.075°N, 103.489°W).
What is Pactola Dam & Reservoir used for?
Pactola Dam & Reservoir is used primarily for multiple purposes, and is managed by USACE.