Reservoir · Illinois · United States · USACE CWMS
Carlyle Pool
105.0% full
Capacity
287.4 hm³
Volume stored
311 hm³
Coordinates
38.618°N, 89.351°W
Last updated
2026-09-17
Current fill
105.0%vs 7 days ago
0.0%stable
vs 1 year ago
N/A7-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: 2026-09-17.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 38.618, -89.351 · Open in Google Maps
About Carlyle Pool
As of September 17, 2026, Carlyle Pool is filled to 105.0% of its total capacity, holding roughly 311 hm³ of water out of a maximum 287 hm³. At this level the reservoir is effectively full.
Over the most recent week on record the fill level has held broadly steady (+0.0 pts).
Across the readings we hold for Carlyle Pool — 94 data points between June 16, 2026 and September 17, 2026 — the level has ranged from a low of 105.0% (June 16, 2026) to a high of 105.0% (June 16, 2026).
It is operated by USACE primarily for multiple purposes. It lies within the Illinois basin at 38.618°N, 89.351°W.
Key facts
- Current fill level
- 105.0%
- Water stored
- 311 hm³
- Total capacity
- 287 hm³
- 7-day change
- No change
- Primary use
- Multipurpose
- River basin
- Illinois
- Operator
- USACE
- Coordinates
- 38.618°N, 89.351°W
- Last updated
- September 17, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 17 Sep 2026 | 105.0% | 311 |
| 16 Sep 2026 | 105.0% | 312 |
| 15 Sep 2026 | 105.0% | 313 |
| 14 Sep 2026 | 105.0% | 312 |
| 13 Sep 2026 | 105.0% | 315 |
| 12 Sep 2026 | 105.0% | 315 |
| 11 Sep 2026 | 105.0% | 315 |
| 10 Sep 2026 | 105.0% | 317 |
| 9 Sep 2026 | 105.0% | 313 |
| 8 Sep 2026 | 105.0% | 314 |
| 7 Sep 2026 | 105.0% | 315 |
| 6 Sep 2026 | 105.0% | 315 |