Reservoir · Pennsylvania · United States · USACE CWMS
Mahoning Creek Lake
19.3% full
Capacity
46.63 hm³
Volume stored
9 hm³
Vs month average
76% of normal
Coordinates
40.922°N, 79.278°W
Last updated
2026-10-28
Current fill
19.3%vs 7 days ago
-2.7 pplosing
vs 1 year ago
N/A7-day trend
↓falling
Drought context
Storage vs October average
76%of normal
19.3% full on 2026-10-28, against an average of 25.4% for October across 2 years of readings (-6.1 points).
Drought Monitor at this site · 20 October 2026
Nonenot in a drought category
Mahoning Creek Lake'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. Pennsylvania 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: 2026-10-28.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 40.922°N, 79.278°W · Open in Google Maps
About Mahoning Creek Lake
As of October 28, 2026, Mahoning Creek Lake is filled to 19.3% of its total capacity, holding 8.99 hm³ of water out of a maximum 46.63 hm³. At this level the reservoir is critically low.
Over the most recent week on record the fill level has fallen by 2.7 percentage points.
Across the readings we hold for Mahoning Creek Lake — 329 data points between October 29, 2021 and October 28, 2026 — the level has ranged from a low of 12.3% (January 22, 2022) to a high of 100.0% (May 9, 2022). On average the reservoir is fullest around May and at its lowest around November.
It is operated by USACE primarily for multiple purposes. It is at 40.922°N, 79.278°W.
Key facts
- Current fill level
- 19.3% of total capacity
- Water stored
- 8.99 hm³
- Total capacity
- 46.63 hm³
- 7-day change
- ▼ 2.7 pp
- Primary use
- Multipurpose
- Operator
- USACE
- Coordinates
- 40.922°N, 79.278°W
- Last updated
- October 28, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 28 Oct 2026 | 19.3% | 8.99 |
| 27 Oct 2026 | 19.4% | 9.04 |
| 26 Oct 2026 | 19.6% | 9.13 |
| 25 Oct 2026 | 19.7% | 9.18 |
| 24 Oct 2026 | 19.7% | 9.18 |
| 23 Oct 2026 | 20.3% | 9.45 |
| 22 Oct 2026 | 21.2% | 9.9 |
| 21 Oct 2026 | 22.0% | 10.26 |
| 20 Oct 2026 | 23.8% | 11.09 |
| 19 Oct 2026 | 26.3% | 12.27 |
| 18 Oct 2026 | 28.2% | 13.13 |
| 17 Oct 2026 | 29.0% | 13.51 |