Reservoir · Kentucky · United States · USACE CWMS
Grayson Lake
78.1% full
Capacity
36.25 hm³
Volume stored
28 hm³
Coordinates
38.252°N, 82.986°W
Last updated
2026-09-14
Current fill
78.1%vs 7 days ago
-0.7%losing
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: 2026-09-14.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 38.252, -82.986 · Open in Google Maps
About Grayson Lake
As of September 14, 2026, Grayson Lake is filled to 78.1% of its total capacity, holding roughly 28 hm³ of water out of a maximum 36 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 (-0.7 pts).
Across the readings we hold for Grayson Lake — 47 data points between July 30, 2026 and September 14, 2026 — the level has ranged from a low of 78.1% (September 14, 2026) to a high of 83.3% (August 18, 2026).
It is operated by USACE primarily for multiple purposes. It lies within the Kentucky basin at 38.252°N, 82.986°W.
Key facts
- Current fill level
- 78.1%
- Water stored
- 28 hm³
- Total capacity
- 36 hm³
- 7-day change
- ▼ 0.7 pts
- Primary use
- Multipurpose
- River basin
- Kentucky
- Operator
- USACE
- Coordinates
- 38.252°N, 82.986°W
- Last updated
- September 14, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 14 Sep 2026 | 78.1% | 28 |
| 13 Sep 2026 | 78.2% | 28 |
| 12 Sep 2026 | 78.4% | 28 |
| 11 Sep 2026 | 78.4% | 28 |
| 10 Sep 2026 | 78.4% | 28 |
| 9 Sep 2026 | 78.4% | 28 |
| 8 Sep 2026 | 78.6% | 28 |
| 7 Sep 2026 | 78.8% | 29 |
| 6 Sep 2026 | 79.1% | 29 |
| 5 Sep 2026 | 79.3% | 29 |
| 4 Sep 2026 | 79.6% | 29 |
| 3 Sep 2026 | 79.8% | 29 |