Reservoir · Texas · United States · USGS NWIS
O. H. Ivie Reservoir
41.7% full
Capacity
683.77 hm³
Volume stored
285 hm³
Coordinates
31.500°N, 99.668°W
Last updated
2026-09-30
Current fill
41.7%vs 7 days ago
-0.4%losing
vs 1 year ago
-8.0%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: 2026-09-30.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 31.500, -99.668 · Open in Google Maps
About O. H. Ivie Reservoir
As of September 30, 2026, O. H. Ivie Reservoir is filled to 41.7% of its total capacity, holding roughly 285 hm³ of water out of a maximum 684 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 (-0.4 pts), and it is 8.0 points below its level on the same date a year earlier.
Across the readings we hold for O. H. Ivie Reservoir — 1461 data points between October 1, 2022 and September 30, 2026 — the level has ranged from a low of 25.3% (August 28, 2024) to a high of 54.9% (July 17, 2025). On average the reservoir is fullest around July and at its lowest around April.
It is operated by USGS primarily for multiple purposes. It lies within the Texas basin at 31.500°N, 99.668°W.
Key facts
- Current fill level
- 41.7%
- Water stored
- 285 hm³
- Total capacity
- 684 hm³
- 7-day change
- ▼ 0.4 pts
- Year-on-year
- ▼ 8.0 pts
- Primary use
- Multipurpose
- River basin
- Texas
- Operator
- USGS
- Coordinates
- 31.500°N, 99.668°W
- Last updated
- September 30, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 30 Sep 2026 | 41.7% | 285 |
| 29 Sep 2026 | 41.7% | 285 |
| 28 Sep 2026 | 41.8% | 286 |
| 27 Sep 2026 | 41.9% | 286 |
| 26 Sep 2026 | 41.9% | 286 |
| 25 Sep 2026 | 42.0% | 287 |
| 24 Sep 2026 | 42.0% | 287 |
| 23 Sep 2026 | 42.1% | 288 |
| 22 Sep 2026 | 42.2% | 288 |
| 21 Sep 2026 | 42.2% | 289 |
| 20 Sep 2026 | 42.3% | 289 |
| 19 Sep 2026 | 42.3% | 289 |