Reservoir · Oklahoma · United States · USGS NWIS
Stanley Draper Lake
82.8% full
Capacity
123.35 hm³
Volume stored
102 hm³
Coordinates
35.328°N, 97.357°W
Last updated
2026-09-30
Current fill
82.8%vs 7 days ago
-0.6%losing
vs 1 year ago
-12.9%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. 35.328, -97.357 · Open in Google Maps
About Stanley Draper Lake
As of September 30, 2026, Stanley Draper Lake is filled to 82.8% of its total capacity, holding roughly 102 hm³ of water out of a maximum 123 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has held broadly steady (-0.6 pts), and it is 12.9 points below its level on the same date a year earlier.
Across the readings we hold for Stanley Draper Lake — 1461 data points between October 1, 2022 and September 30, 2026 — the level has ranged from a low of 72.6% (October 23, 2022) to a high of 101.4% (June 19, 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 35.328°N, 97.357°W.
Key facts
- Current fill level
- 82.8%
- Water stored
- 102 hm³
- Total capacity
- 123 hm³
- 7-day change
- ▼ 0.6 pts
- Year-on-year
- ▼ 12.9 pts
- Primary use
- Multipurpose
- River basin
- Oklahoma
- Operator
- USGS
- Coordinates
- 35.328°N, 97.357°W
- Last updated
- September 30, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 30 Sep 2026 | 82.8% | 102 |
| 29 Sep 2026 | 82.9% | 102 |
| 28 Sep 2026 | 83.0% | 102 |
| 27 Sep 2026 | 83.0% | 102 |
| 26 Sep 2026 | 83.1% | 103 |
| 25 Sep 2026 | 83.1% | 103 |
| 24 Sep 2026 | 83.2% | 103 |
| 23 Sep 2026 | 83.4% | 103 |
| 22 Sep 2026 | 83.4% | 103 |
| 21 Sep 2026 | 83.6% | 103 |
| 20 Sep 2026 | 83.6% | 103 |
| 19 Sep 2026 | 83.7% | 103 |