Reservoir · Oklahoma · United States · USACE CWMS
Hulah Lake
20.0% full
Capacity
97.22 hm³
Volume stored
19 hm³
Coordinates
36.929°N, 96.088°W
Last updated
2026-09-11
Current fill
20.0%vs 7 days ago
+0.1%gaining
vs 1 year ago
N/A7-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: 2026-09-11.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 36.929, -96.088 · Open in Google Maps
About Hulah Lake
As of September 11, 2026, Hulah Lake is filled to 20.0% of its total capacity, holding roughly 19 hm³ of water out of a maximum 97 hm³. At this level the reservoir is low.
Over the most recent week on record the fill level has held broadly steady (+0.1 pts).
Across the readings we hold for Hulah Lake — 330 data points between September 12, 2021 and September 11, 2026 — the level has ranged from a low of 18.4% (October 10, 2021) to a high of 100.0% (June 28, 2026). On average the reservoir is fullest around July and at its lowest around September.
It is operated by USACE primarily for multiple purposes. It lies within the Oklahoma basin at 36.929°N, 96.088°W.
Key facts
- Current fill level
- 20.0%
- Water stored
- 19 hm³
- Total capacity
- 97 hm³
- 7-day change
- ▲ 0.1 pts
- Primary use
- Multipurpose
- River basin
- Oklahoma
- Operator
- USACE
- Coordinates
- 36.929°N, 96.088°W
- Last updated
- September 11, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 11 Sep 2026 | 20.0% | 19 |
| 10 Sep 2026 | 20.0% | 19 |
| 9 Sep 2026 | 19.6% | 19 |
| 8 Sep 2026 | 19.6% | 19 |
| 7 Sep 2026 | 19.7% | 19 |
| 6 Sep 2026 | 19.8% | 19 |
| 5 Sep 2026 | 19.9% | 19 |
| 4 Sep 2026 | 19.9% | 19 |
| 3 Sep 2026 | 20.0% | 19 |
| 2 Sep 2026 | 20.1% | 20 |
| 1 Sep 2026 | 20.1% | 20 |
| 31 Aug 2026 | 20.3% | 20 |