Reservoir · Iowa · United States · USACE CWMS
Lake Red Rock Pool
93.2% full
Capacity
233.13 hm³
Volume stored
217 hm³
Coordinates
41.369°N, 92.981°W
Last updated
2026-05-27
Current fill
93.2%vs 7 days ago
-0.2%losing
vs 1 year ago
-10.1%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: 2026-05-27.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 41.369, -92.981 · Open in Google Maps
About Lake Red Rock Pool
As of May 27, 2026, Lake Red Rock Pool is filled to 93.2% of its total capacity, holding roughly 217 hm³ of water out of a maximum 233 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has held broadly steady (-0.2 pts), and it is 10.1 points below its level on the same date a year earlier.
Across the readings we hold for Lake Red Rock Pool — 210 data points between June 13, 2021 and May 27, 2026 — the level has ranged from a low of 93.2% (May 27, 2026) to a high of 105.0% (June 13, 2021). On average the reservoir is fullest around February and at its lowest around May.
It is operated by USACE primarily for multiple purposes. It lies within the Iowa basin at 41.369°N, 92.981°W.
Key facts
- Current fill level
- 93.2%
- Water stored
- 217 hm³
- Total capacity
- 233 hm³
- 7-day change
- ▼ 0.2 pts
- Year-on-year
- ▼ 10.1 pts
- Primary use
- Multipurpose
- River basin
- Iowa
- Operator
- USACE
- Coordinates
- 41.369°N, 92.981°W
- Last updated
- May 27, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 27 May 2026 | 93.2% | 217 |
| 26 May 2026 | 93.4% | 218 |
| 25 May 2026 | 96.2% | 224 |
| 24 May 2026 | 99.5% | 232 |
| 23 May 2026 | 103.2% | 241 |
| 22 May 2026 | 105.0% | 247 |
| 21 May 2026 | 105.0% | 258 |
| 20 May 2026 | 105.0% | 268 |
| 19 May 2026 | 105.0% | 254 |
| 18 May 2026 | 97.1% | 226 |
| 17 May 2026 | 95.7% | 223 |
| 16 May 2026 | 94.7% | 221 |
Frequently asked questions
What is the current water level of Lake Red Rock Pool?
As of May 27, 2026, Lake Red Rock Pool is at 93.2% of its capacity, holding approximately 217 hm³ of water, according to USACE CWMS (US Army Corps of Engineers) data.
Is Lake Red Rock Pool reservoir full?
No. As of May 27, 2026, Lake Red Rock Pool is high at 93.2% of its capacity, so it is not full.
Is the water level at Lake Red Rock Pool rising or falling?
The level at Lake Red Rock Pool has been broadly stable over the latest week on record (-0.2 points).
How much water can Lake Red Rock Pool hold?
Lake Red Rock Pool has a total capacity of 233 hm³.
Where is Lake Red Rock Pool reservoir located?
Lake Red Rock Pool is located in Iowa, United States, within the Iowa basin (coordinates 41.369°N, 92.981°W).
What is Lake Red Rock Pool used for?
Lake Red Rock Pool is used primarily for multiple purposes, and is managed by USACE.