Reservoir · Oklahoma · United States · USGS NWIS
Grand Lake o' the Cherokees
82.1% full
Capacity
2,010.58 hm³
Volume stored
1650 hm³
Coordinates
36.469°N, 95.041°W
Last updated
2026-09-10
Current fill
82.1%vs 7 days ago
-0.2%losing
vs 1 year ago
-1.4%year-over-year
7-day trend
→stable
Data source: USGS National Water Information System (NWIS) — 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: 2026-09-10.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 36.469, -95.041 · Open in Google Maps
About Grand Lake o' the Cherokees
As of September 10, 2026, Grand Lake o' the Cherokees is filled to 82.1% of its total capacity, holding roughly 1,650 hm³ of water out of a maximum 2,011 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has held broadly steady (-0.2 pts), and it is 1.4 points below its level on the same date a year earlier.
Across the readings we hold for Grand Lake o' the Cherokees — 1461 data points between September 11, 2022 and September 10, 2026 — the level has ranged from a low of 79.1% (February 21, 2025) to a high of 105.0% (June 8, 2025). On average the reservoir is fullest around June and at its lowest around October.
It is operated by USGS primarily for multiple purposes. It lies within the Oklahoma basin at 36.469°N, 95.041°W.
Key facts
- Current fill level
- 82.1%
- Water stored
- 1,650 hm³
- Total capacity
- 2,011 hm³
- 7-day change
- ▼ 0.2 pts
- Year-on-year
- ▼ 1.4 pts
- Primary use
- Multipurpose
- River basin
- Oklahoma
- Operator
- USGS
- Coordinates
- 36.469°N, 95.041°W
- Last updated
- September 10, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 10 Sep 2026 | 82.1% | 1,650 |
| 9 Sep 2026 | 82.0% | 1,648 |
| 8 Sep 2026 | 82.1% | 1,650 |
| 7 Sep 2026 | 82.1% | 1,650 |
| 6 Sep 2026 | 82.1% | 1,652 |
| 5 Sep 2026 | 82.2% | 1,653 |
| 4 Sep 2026 | 82.2% | 1,653 |
| 3 Sep 2026 | 82.3% | 1,654 |
| 2 Sep 2026 | 82.3% | 1,654 |
| 1 Sep 2026 | 82.4% | 1,657 |
| 31 Aug 2026 | 82.5% | 1,658 |
| 30 Aug 2026 | 82.5% | 1,658 |