Reservoir · Iowa · United States · USACE CWMS
Lake Red Rock Pool
49.0% full
Capacity
641.31 hm³
Volume stored
314 hm³
Vs month average
72% of normal
Coordinates
41.369°N, 92.981°W
Last updated
2026-10-29
Current fill
49.0%vs 7 days ago
-2.3 pplosing
vs 1 year ago
N/A7-day trend
↓falling
Drought context
Storage vs October average
72%of normal
49.0% full on 2026-10-29, against an average of 67.7% for October across 2 years of readings (-18.7 points).
Drought Monitor at this site · 27 October 2026
Nonenot in a drought category
Lake Red Rock Pool's coordinates fall outside every category on the weekly U.S. Drought Monitor map. That describes local conditions — rainfall, soil moisture, streamflow — not the reservoir's storage. Iowa drought figures →
Data source: USACE CWMS — US Army Corps of Engineers — daily reservoir storage volume. Design capacity is unavailable for this site, so fill % is estimated against the 5-year maximum storage and may overstate fullness. Last reading: 2026-10-29.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 41.369°N, 92.981°W · Open in Google Maps
About Lake Red Rock Pool
As of October 29, 2026, Lake Red Rock Pool is filled to 49.0% of its total capacity, holding 314.01 hm³ of water out of a maximum 641.31 hm³. At this level the reservoir is within its normal operating range.
Over the most recent week on record the fill level has fallen by 2.3 percentage points.
Across the readings we hold for Lake Red Rock Pool — 199 data points between October 30, 2021 and October 29, 2026 — the level has ranged from a low of 34.2% (September 6, 2026) to a high of 100.0% (October 7, 2026). On average the reservoir is fullest around October and at its lowest around August.
It is operated by USACE primarily for multiple purposes. It is at 41.369°N, 92.981°W.
Key facts
- Current fill level
- 49.0% of total capacity
- Water stored
- 314.01 hm³
- Total capacity
- 641.31 hm³
- 7-day change
- ▼ 2.3 pp
- Primary use
- Multipurpose
- Operator
- USACE
- Coordinates
- 41.369°N, 92.981°W
- Last updated
- October 29, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 29 Oct 2026 | 49.0% | 314.01 |
| 28 Oct 2026 | 48.4% | 310.55 |
| 27 Oct 2026 | 48.7% | 312.03 |
| 26 Oct 2026 | 49.4% | 316.98 |
| 25 Oct 2026 | 49.7% | 318.7 |
| 24 Oct 2026 | 49.7% | 318.95 |
| 23 Oct 2026 | 50.4% | 322.93 |
| 22 Oct 2026 | 51.3% | 328.99 |
| 21 Oct 2026 | 52.7% | 338.02 |
| 20 Oct 2026 | 54.0% | 346.12 |
| 19 Oct 2026 | 55.3% | 354.62 |
| 18 Oct 2026 | 57.0% | 365.81 |