Reservoir · Pennsylvania · United States · USACE CWMS
Mahoning Creek Lake, PA
40.5% full
Capacity
39.7 hm³
Volume stored
16 hm³
Coordinates
40.922°N, 79.278°W
Last updated
2026-07-30
Current fill
40.5%vs 7 days ago
+0.8%gaining
vs 1 year ago
+9.9%year-over-year
7-day trend
→stable
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: 2026-07-30.
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, PA
As of July 30, 2026, Mahoning Creek Lake, PA is filled to 40.5% of its total capacity, holding roughly 16 hm³ of water out of a maximum 40 hm³. At this level the reservoir is within its normal operating range.
Over the most recent week on record the fill level has held broadly steady (+0.8 pts), and it is 9.9 points above its level on the same date a year earlier.
Across the readings we hold for Mahoning Creek Lake, PA — 327 data points between July 31, 2021 and July 30, 2026 — the level has ranged from a low of 14.5% (January 22, 2022) to a high of 100.0% (April 6, 2026). On average the reservoir is fullest around July 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
- 40.5%
- Water stored
- 16 hm³
- Total capacity
- 40 hm³
- 7-day change
- ▲ 0.8 pts
- Year-on-year
- ▲ 9.9 pts
- Primary use
- Multipurpose
- River basin
- Pennsylvania
- Operator
- USACE
- Coordinates
- 40.922°N, 79.278°W
- Last updated
- July 30, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 30 Jul 2026 | 40.5% | 16 |
| 29 Jul 2026 | 39.7% | 16 |
| 28 Jul 2026 | 33.7% | 13 |
| 27 Jul 2026 | 34.5% | 14 |
| 26 Jul 2026 | 35.7% | 14 |
| 25 Jul 2026 | 38.2% | 15 |
| 24 Jul 2026 | 44.0% | 17 |
| 23 Jul 2026 | 50.6% | 20 |
| 22 Jul 2026 | 55.8% | 22 |
| 21 Jul 2026 | 59.0% | 23 |
| 20 Jul 2026 | 63.1% | 25 |
| 19 Jul 2026 | 56.5% | 22 |
Frequently asked questions
What is the current water level of Mahoning Creek Lake, PA?
As of July 30, 2026, Mahoning Creek Lake, PA is at 40.5% of its capacity, holding approximately 16 hm³ of water, according to USACE CWMS (US Army Corps of Engineers) data.
Is Mahoning Creek Lake, PA reservoir full?
No. As of July 30, 2026, Mahoning Creek Lake, PA is within its normal operating range at 40.5% of its capacity, so it is not full.
Is the water level at Mahoning Creek Lake, PA rising or falling?
The level at Mahoning Creek Lake, PA has been broadly stable over the latest week on record (+0.8 points).
How much water can Mahoning Creek Lake, PA hold?
Mahoning Creek Lake, PA has a total capacity of 40 hm³.
Where is Mahoning Creek Lake, PA reservoir located?
Mahoning Creek Lake, PA is located in Pennsylvania, United States, within the Pennsylvania basin (coordinates 40.922°N, 79.278°W).
What is Mahoning Creek Lake, PA used for?
Mahoning Creek Lake, PA is used primarily for multiple purposes, and is managed by USACE.