Reservoir · Oklahoma · United States · USACE CWMS
Newt Graham LD18
76.4% full
Capacity
28.99 hm³
Volume stored
22 hm³
Coordinates
36.058°N, 95.535°W
Last updated
2026-06-11
Current fill
76.4%vs 7 days ago
+0.8%gaining
vs 1 year ago
+0.2%year-over-year
7-day trend
→stable
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: 2026-06-11.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 36.058, -95.535 · Open in Google Maps
About Newt Graham LD18
As of June 11, 2026, Newt Graham LD18 is filled to 76.4% of its total capacity, holding roughly 22 hm³ of water out of a maximum 29 hm³. At this level the reservoir is within its normal operating range.
Over the most recent week on record the fill level has held broadly steady (+0.8 pts), and it sits close to where it was a year earlier.
Across the readings we hold for Newt Graham LD18 — 329 data points between June 13, 2021 and June 11, 2026 — the level has ranged from a low of 72.9% (May 23, 2026) to a high of 104.9% (October 2, 2021). On average the reservoir is fullest around January and at its lowest around April.
It is operated by USACE primarily for multiple purposes. It lies within the Oklahoma basin at 36.058°N, 95.535°W.
Key facts
- Current fill level
- 76.4%
- Water stored
- 22 hm³
- Total capacity
- 29 hm³
- 7-day change
- ▲ 0.8 pts
- Year-on-year
- ▲ 0.2 pts
- Primary use
- Multipurpose
- River basin
- Oklahoma
- Operator
- USACE
- Coordinates
- 36.058°N, 95.535°W
- Last updated
- June 11, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 11 Jun 2026 | 76.4% | 22 |
| 10 Jun 2026 | 75.6% | 22 |
| 9 Jun 2026 | 75.9% | 22 |
| 8 Jun 2026 | 76.0% | 22 |
| 7 Jun 2026 | 75.3% | 22 |
| 6 Jun 2026 | 76.6% | 22 |
| 5 Jun 2026 | 75.0% | 22 |
| 4 Jun 2026 | 75.9% | 22 |
| 3 Jun 2026 | 76.2% | 22 |
| 2 Jun 2026 | 76.2% | 22 |
| 1 Jun 2026 | 75.5% | 22 |
| 31 May 2026 | 75.8% | 22 |
Frequently asked questions
What is the current water level of Newt Graham LD18?
As of June 11, 2026, Newt Graham LD18 is at 76.4% of its capacity, holding approximately 22 hm³ of water, according to USACE CWMS (US Army Corps of Engineers) data.
Is Newt Graham LD18 reservoir full?
No. As of June 11, 2026, Newt Graham LD18 is within its normal operating range at 76.4% of its capacity, so it is not full.
Is the water level at Newt Graham LD18 rising or falling?
The level at Newt Graham LD18 has been broadly stable over the latest week on record (+0.8 points).
How much water can Newt Graham LD18 hold?
Newt Graham LD18 has a total capacity of 29 hm³.
Where is Newt Graham LD18 reservoir located?
Newt Graham LD18 is located in Oklahoma, United States, within the Oklahoma basin (coordinates 36.058°N, 95.535°W).
What is Newt Graham LD18 used for?
Newt Graham LD18 is used primarily for multiple purposes, and is managed by USACE.