Reservoir · Oklahoma · United States · USACE CWMS
W.D. Mayo LD14
95.1% full
Capacity
43.73 hm³
Volume stored
42 hm³
Vs month average
140% of normal
Coordinates
35.314°N, 94.559°W
Last updated
2026-10-15
Current fill
95.1%vs 7 days ago
-2.8%losing
vs 1 year ago
N/A7-day trend
↓falling
Drought context
Storage vs October average
140%of normal
95.1% full on 2026-10-15, against an average of 68.1% for October across 3 years of readings (+27.0 points).
Drought Monitor at this site · 13 October 2026
Nonenot in a drought category
W.D. Mayo LD14's coordinates fall outside every category on the weekly U.S. Drought Monitor map. That describes local conditions — rainfall, soil moisture, streamflow — not the reservoir's storage. Oklahoma drought figures →
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: 2026-10-15.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 35.314, -94.559 · Open in Google Maps
About W.D. Mayo LD14
As of October 15, 2026, W.D. Mayo LD14 is filled to 95.1% of its total capacity, holding roughly 42 hm³ of water out of a maximum 44 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has fallen by 2.8 percentage points.
Across the readings we hold for W.D. Mayo LD14 — 330 data points between October 16, 2021 and October 15, 2026 — the level has ranged from a low of 37.5% (April 17, 2022) to a high of 100.0% (July 4, 2026). On average the reservoir is fullest around September and at its lowest around April.
It is operated by USACE primarily for multiple purposes. It lies within the Oklahoma basin at 35.314°N, 94.559°W.
Key facts
- Current fill level
- 95.1%
- Water stored
- 42 hm³
- Total capacity
- 44 hm³
- 7-day change
- ▼ 2.8 pts
- Primary use
- Multipurpose
- River basin
- Oklahoma
- Operator
- USACE
- Coordinates
- 35.314°N, 94.559°W
- Last updated
- October 15, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 15 Oct 2026 | 95.1% | 42 |
| 14 Oct 2026 | 96.4% | 42 |
| 13 Oct 2026 | 97.9% | 43 |
| 12 Oct 2026 | 94.5% | 41 |
| 11 Oct 2026 | 97.6% | 43 |
| 10 Oct 2026 | 95.5% | 42 |
| 9 Oct 2026 | 96.9% | 42 |
| 8 Oct 2026 | 97.9% | 43 |
| 7 Oct 2026 | 97.2% | 42 |
| 6 Oct 2026 | 97.7% | 43 |
| 5 Oct 2026 | 98.2% | 43 |
| 4 Oct 2026 | 98.9% | 43 |