Reservoir · Oklahoma · United States · USGS NWIS
Atoka Reservoir
90.8% full
Capacity
134.46 hm³
Volume stored
122 hm³
Coordinates
34.445°N, 96.084°W
Last updated
2026-09-30
Current fill
90.8%vs 7 days ago
-1.4%losing
vs 1 year ago
-6.8%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: 2026-09-30.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 34.445, -96.084 · Open in Google Maps
About Atoka Reservoir
As of September 30, 2026, Atoka Reservoir is filled to 90.8% of its total capacity, holding roughly 122 hm³ of water out of a maximum 134 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has held broadly steady (-1.4 pts), and it is 6.8 points below its level on the same date a year earlier.
Across the readings we hold for Atoka Reservoir — 1461 data points between October 1, 2022 and September 30, 2026 — the level has ranged from a low of 79.2% (November 23, 2022) to a high of 105.0% (March 4, 2023). On average the reservoir is fullest around July and at its lowest around December.
It is operated by USGS primarily for multiple purposes. It lies within the Oklahoma basin at 34.445°N, 96.084°W.
Key facts
- Current fill level
- 90.8%
- Water stored
- 122 hm³
- Total capacity
- 134 hm³
- 7-day change
- ▼ 1.4 pts
- Year-on-year
- ▼ 6.8 pts
- Primary use
- Multipurpose
- River basin
- Oklahoma
- Operator
- USGS
- Coordinates
- 34.445°N, 96.084°W
- Last updated
- September 30, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 30 Sep 2026 | 90.8% | 122 |
| 29 Sep 2026 | 91.0% | 122 |
| 28 Sep 2026 | 91.2% | 123 |
| 27 Sep 2026 | 91.4% | 123 |
| 26 Sep 2026 | 91.5% | 123 |
| 25 Sep 2026 | 91.7% | 123 |
| 24 Sep 2026 | 92.0% | 124 |
| 23 Sep 2026 | 92.2% | 124 |
| 22 Sep 2026 | 92.7% | 125 |
| 21 Sep 2026 | 93.0% | 125 |
| 20 Sep 2026 | 92.9% | 125 |
| 19 Sep 2026 | 93.3% | 125 |