Reservoir · Illinois · United States · USACE CWMS
Carlyle Pool
105.0% full
Capacity
287.4 hm³
Volume stored
303 hm³
Vs month average
98% of normal
Coordinates
38.618°N, 89.351°W
Last updated
2026-10-15
Current fill
105.0%vs 7 days ago
0.0%stable
vs 1 year ago
N/A7-day trend
→stable
Drought context
Storage vs October average
98%of normal
105.0% full on 2026-10-15, against an average of 106.8% for October across 3 years of readings (-1.8 points).
Drought Monitor at this site · 13 October 2026
D1moderate drought
The ground at Carlyle Pool'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. Illinois drought figures →
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: 2026-10-15.
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 October 15, 2026, Carlyle Pool is filled to 105.0% of its total capacity, holding roughly 303 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 — 199 data points between October 16, 2021 and October 15, 2026 — the level has ranged from a low of 85.2% (January 22, 2022) to a high of 105.0% (October 16, 2021). On average the reservoir is fullest around July and at its lowest around December.
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
- 303 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
- October 15, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 15 Oct 2026 | 105.0% | 303 |
| 14 Oct 2026 | 105.0% | 303 |
| 13 Oct 2026 | 104.2% | 300 |
| 12 Oct 2026 | 105.0% | 302 |
| 11 Oct 2026 | 105.0% | 302 |
| 10 Oct 2026 | 105.0% | 302 |
| 9 Oct 2026 | 105.0% | 303 |
| 8 Oct 2026 | 105.0% | 304 |
| 7 Oct 2026 | 105.0% | 304 |
| 6 Oct 2026 | 105.0% | 304 |
| 5 Oct 2026 | 105.0% | 306 |
| 4 Oct 2026 | 105.0% | 306 |