Reservoir · Pennsylvania · United States · USACE CWMS
Mahoning Creek Lake
36.6% full
Capacity
46.63 hm³
Volume stored
17 hm³
Vs month average
148% of normal
Coordinates
40.922°N, 79.278°W
Last updated
2026-10-13
Current fill
36.6%vs 7 days ago
+9.9%gaining
vs 1 year ago
N/A7-day trend
↑rising
Drought context
Storage vs October average
148%of normal
36.6% full on 2026-10-13, against an average of 24.7% for October across 3 years of readings (+11.9 points).
Drought Monitor at this site · 6 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: 2026-10-13.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 40.922, -79.278 · Open in Google Maps
About Mahoning Creek Lake
As of October 13, 2026, Mahoning Creek Lake is filled to 36.6% of its total capacity, holding roughly 17 hm³ of water out of a maximum 47 hm³. At this level the reservoir is low.
Over the most recent week on record the fill level has risen by 9.9 percentage points.
Across the readings we hold for Mahoning Creek Lake — 329 data points between October 14, 2021 and October 13, 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 lies within the Pennsylvania basin at 40.922°N, 79.278°W.
Key facts
- Current fill level
- 36.6%
- Water stored
- 17 hm³
- Total capacity
- 47 hm³
- 7-day change
- ▲ 9.9 pts
- Primary use
- Multipurpose
- River basin
- Pennsylvania
- Operator
- USACE
- Coordinates
- 40.922°N, 79.278°W
- Last updated
- October 13, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 13 Oct 2026 | 36.6% | 17 |
| 12 Oct 2026 | 36.5% | 17 |
| 11 Oct 2026 | 27.6% | 13 |
| 10 Oct 2026 | 26.2% | 12 |
| 9 Oct 2026 | 26.4% | 12 |
| 8 Oct 2026 | 26.6% | 12 |
| 7 Oct 2026 | 26.6% | 12 |
| 6 Oct 2026 | 26.7% | 12 |
| 5 Oct 2026 | 26.6% | 12 |
| 4 Oct 2026 | 26.7% | 12 |
| 3 Oct 2026 | 26.7% | 12 |
| 2 Oct 2026 | 26.8% | 13 |