Reservoir · Oklahoma · United States · USACE CWMS
W.D. Mayo LD14
97.6% full
Capacity
43.73 hm³
Volume stored
43 hm³
Vs month average
107% of normal
Coordinates
35.314°N, 94.559°W
Last updated
2026-10-28
Current fill
97.6%vs 7 days ago
0.0 ppstable
vs 1 year ago
N/A7-day trend
→stable
Drought context
Storage vs October average
107%of normal
97.6% full on 2026-10-28, against an average of 91.6% for October across 2 years of readings (+6.0 points).
Drought Monitor at this site · 20 October 2026
D3extreme drought
The ground at W.D. Mayo LD14's coordinates falls inside the D3 area of 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: 2026-10-28.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 35.314°N, 94.559°W · Open in Google Maps
About W.D. Mayo LD14
As of October 28, 2026, W.D. Mayo LD14 is filled to 97.6% of its total capacity, holding 42.69 hm³ of water out of a maximum 43.73 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has held broadly steady (+0.0 pp).
Across the readings we hold for W.D. Mayo LD14 — 330 data points between October 29, 2021 and October 28, 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 is at 35.314°N, 94.559°W.
Key facts
- Current fill level
- 97.6% of total capacity
- Water stored
- 42.69 hm³
- Total capacity
- 43.73 hm³
- 7-day change
- No change
- Primary use
- Multipurpose
- Operator
- USACE
- Coordinates
- 35.314°N, 94.559°W
- Last updated
- October 28, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 28 Oct 2026 | 97.6% | 42.69 |
| 27 Oct 2026 | 95.9% | 41.92 |
| 26 Oct 2026 | 97.0% | 42.42 |
| 25 Oct 2026 | 96.4% | 42.16 |
| 24 Oct 2026 | 97.0% | 42.42 |
| 23 Oct 2026 | 99.2% | 43.39 |
| 22 Oct 2026 | 96.3% | 42.12 |
| 21 Oct 2026 | 97.6% | 42.66 |
| 20 Oct 2026 | 97.4% | 42.59 |
| 19 Oct 2026 | 96.6% | 42.26 |
| 18 Oct 2026 | 96.3% | 42.09 |
| 17 Oct 2026 | 98.5% | 43.09 |