Reservoir · Texas · United States · USGS NWIS
E. V. Spence Reservoir
9.3% full
Capacity
638.05 hm³
Volume stored
60 hm³
Coordinates
31.880°N, 100.517°W
Last updated
2026-09-30
Current fill
9.3%vs 7 days ago
-0.2%losing
vs 1 year ago
-4.4%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. 31.880, -100.517 · Open in Google Maps
About E. V. Spence Reservoir
As of September 30, 2026, E. V. Spence Reservoir is filled to 9.3% of its total capacity, holding roughly 60 hm³ of water out of a maximum 638 hm³. At this level the reservoir is critically low.
Over the most recent week on record the fill level has held broadly steady (-0.2 pts), and it is 4.4 points below its level on the same date a year earlier.
Across the readings we hold for E. V. Spence Reservoir — 1461 data points between October 1, 2022 and September 30, 2026 — the level has ranged from a low of 9.3% (September 29, 2026) to a high of 19.2% (October 1, 2022). On average the reservoir is fullest around October and at its lowest around August.
It is operated by USGS primarily for multiple purposes. It lies within the Texas basin at 31.880°N, 100.517°W.
Key facts
- Current fill level
- 9.3%
- Water stored
- 60 hm³
- Total capacity
- 638 hm³
- 7-day change
- ▼ 0.2 pts
- Year-on-year
- ▼ 4.4 pts
- Primary use
- Multipurpose
- River basin
- Texas
- Operator
- USGS
- Coordinates
- 31.880°N, 100.517°W
- Last updated
- September 30, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 30 Sep 2026 | 9.3% | 60 |
| 29 Sep 2026 | 9.3% | 60 |
| 28 Sep 2026 | 9.4% | 60 |
| 27 Sep 2026 | 9.4% | 60 |
| 26 Sep 2026 | 9.4% | 60 |
| 25 Sep 2026 | 9.4% | 60 |
| 24 Sep 2026 | 9.5% | 60 |
| 23 Sep 2026 | 9.5% | 60 |
| 22 Sep 2026 | 9.5% | 61 |
| 21 Sep 2026 | 9.5% | 61 |
| 20 Sep 2026 | 9.5% | 61 |
| 19 Sep 2026 | 9.5% | 61 |