Reservoir · Oklahoma · United States · USACE CWMS
Newt Graham LD18
74.7% full
Capacity
28.99 hm³
Volume stored
22 hm³
Vs month average
96% of normal
Coordinates
36.058°N, 95.535°W
Last updated
2026-10-28
Current fill
74.7%vs 7 days ago
-1.4 pplosing
vs 1 year ago
N/A7-day trend
↓falling
Drought context
Storage vs October average
96%of normal
74.7% full on 2026-10-28, against an average of 77.7% for October across 2 years of readings (-3.0 points).
Drought Monitor at this site · 20 October 2026
D2severe drought
The ground at Newt Graham LD18's coordinates falls inside the D2 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. Capacity is the design (normal full-pool) capacity from the US National Inventory of Dams (NID); fill % = current volume ÷ design capacity. 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. 36.058°N, 95.535°W · Open in Google Maps
About Newt Graham LD18
As of October 28, 2026, Newt Graham LD18 is filled to 74.7% of its total capacity, holding 21.65 hm³ of water out of a maximum 28.99 hm³. At this level the reservoir is within its normal operating range.
Over the most recent week on record the fill level has fallen by 1.4 percentage points.
Across the readings we hold for Newt Graham LD18 — 330 data points between October 29, 2021 and October 28, 2026 — the level has ranged from a low of 73.4% (July 12, 2026) to a high of 104.9% (March 22, 2022). On average the reservoir is fullest around February and at its lowest around August.
It is operated by USACE primarily for multiple purposes. It is at 36.058°N, 95.535°W.
Key facts
- Current fill level
- 74.7% of total capacity
- Water stored
- 21.65 hm³
- Total capacity
- 28.99 hm³
- 7-day change
- ▼ 1.4 pp
- Primary use
- Multipurpose
- Operator
- USACE
- Coordinates
- 36.058°N, 95.535°W
- Last updated
- October 28, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 28 Oct 2026 | 74.7% | 21.65 |
| 27 Oct 2026 | 74.7% | 21.65 |
| 26 Oct 2026 | 75.0% | 21.75 |
| 25 Oct 2026 | 74.6% | 21.63 |
| 24 Oct 2026 | 74.4% | 21.57 |
| 23 Oct 2026 | 74.5% | 21.6 |
| 22 Oct 2026 | 74.6% | 21.63 |
| 21 Oct 2026 | 76.1% | 22.05 |
| 20 Oct 2026 | 75.7% | 21.95 |
| 19 Oct 2026 | 75.5% | 21.9 |
| 18 Oct 2026 | 74.7% | 21.66 |
| 17 Oct 2026 | 75.2% | 21.81 |