Reservoir · Oklahoma · United States · USGS NWIS
Lake Ellsworth near Elgin, OK
34.7% full
Capacity
73.36 hm³
Volume stored
25 hm³
Coordinates
34.795°N, 98.369°W
Last updated
2026-07-29
Current fill
34.7%vs 7 days ago
-0.1%losing
vs 1 year ago
-4.9%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: 2026-07-29.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 34.795, -98.369 · Open in Google Maps
About Lake Ellsworth near Elgin, OK
As of July 29, 2026, Lake Ellsworth near Elgin, OK is filled to 34.7% of its total capacity, holding roughly 25 hm³ of water out of a maximum 73 hm³. At this level the reservoir is low.
Over the most recent week on record the fill level has held broadly steady (-0.1 pts), and it is 4.9 points below its level on the same date a year earlier.
Across the readings we hold for Lake Ellsworth near Elgin, OK — 1460 data points between July 30, 2022 and July 29, 2026 — the level has ranged from a low of 34.7% (July 29, 2026) to a high of 105.0% (May 2, 2024). On average the reservoir is fullest around August and at its lowest around October.
It is operated by USGS primarily for multiple purposes. It lies within the Oklahoma basin at 34.795°N, 98.369°W.
Key facts
- Current fill level
- 34.7%
- Water stored
- 25 hm³
- Total capacity
- 73 hm³
- 7-day change
- ▼ 0.1 pts
- Year-on-year
- ▼ 4.9 pts
- Primary use
- Multipurpose
- River basin
- Oklahoma
- Operator
- USGS
- Coordinates
- 34.795°N, 98.369°W
- Last updated
- July 29, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 29 Jul 2026 | 34.7% | 25 |
| 28 Jul 2026 | 34.8% | 26 |
| 27 Jul 2026 | 35.0% | 26 |
| 26 Jul 2026 | 35.2% | 26 |
| 25 Jul 2026 | 35.4% | 26 |
| 24 Jul 2026 | 35.6% | 26 |
| 23 Jul 2026 | 35.7% | 26 |
| 22 Jul 2026 | 36.0% | 26 |
| 21 Jul 2026 | 36.1% | 26 |
| 20 Jul 2026 | 36.2% | 27 |
| 19 Jul 2026 | 36.4% | 27 |
| 18 Jul 2026 | 36.5% | 27 |
Frequently asked questions
What is the current water level of Lake Ellsworth near Elgin, OK?
As of July 29, 2026, Lake Ellsworth near Elgin, OK is at 34.7% of its capacity, holding approximately 25 hm³ of water, according to USGS NWIS data.
Is Lake Ellsworth near Elgin, OK reservoir full?
No. As of July 29, 2026, Lake Ellsworth near Elgin, OK is low at 34.7% of its capacity, so it is not full.
Is the water level at Lake Ellsworth near Elgin, OK rising or falling?
The level at Lake Ellsworth near Elgin, OK has been broadly stable over the latest week on record (-0.1 points).
How much water can Lake Ellsworth near Elgin, OK hold?
Lake Ellsworth near Elgin, OK has a total capacity of 73 hm³.
Where is Lake Ellsworth near Elgin, OK reservoir located?
Lake Ellsworth near Elgin, OK is located in Oklahoma, United States, within the Oklahoma basin (coordinates 34.795°N, 98.369°W).
What is Lake Ellsworth near Elgin, OK used for?
Lake Ellsworth near Elgin, OK is used primarily for multiple purposes, and is managed by USGS.