Reservoir · Texas · United States · TWDB
Stillhouse Hollow Lake
97.8% full
Capacity
283.45 hm³
Volume stored
277 hm³
Vs month average
114% of normal
Coordinates
31.022°N, 97.533°W
Last updated
2026-10-14
Current fill
97.8%vs 7 days ago
-0.6%losing
vs 1 year ago
-1.3%year-over-year
7-day trend
→stable
Drought context
Storage vs October average
114%of normal
97.8% full on 2026-10-14, against an average of 86.0% for October across 5 years of readings (+11.8 points).
Data source: Texas Water Development Board (Water Data for Texas) — daily reservoir storage volume. Design capacity is unavailable for this site, so fill % is estimated against the 5-year maximum storage and may overstate fullness. Last reading: 2026-10-14.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
About Stillhouse Hollow Lake
As of October 14, 2026, Stillhouse Hollow Lake is filled to 97.8% of its total capacity, holding roughly 277 hm³ of water out of a maximum 283 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has held broadly steady (-0.6 pts), and it is 1.3 points below its level on the same date a year earlier.
Across the readings we hold for Stillhouse Hollow Lake — 1457 data points between October 15, 2022 and October 14, 2026 — the level has ranged from a low of 55.6% (October 24, 2023) to a high of 100.0% (May 7, 2024). On average the reservoir is fullest around July and at its lowest around March.
It is operated by TWDB primarily for multiple purposes. It lies within the Texas basin at 31.022°N, 97.533°W.
Key facts
- Current fill level
- 97.8%
- Water stored
- 277 hm³
- Total capacity
- 283 hm³
- 7-day change
- ▼ 0.6 pts
- Year-on-year
- ▼ 1.3 pts
- Primary use
- Multipurpose
- River basin
- Texas
- Operator
- TWDB
- Coordinates
- 31.022°N, 97.533°W
- Last updated
- October 14, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 14 Oct 2026 | 97.8% | 277 |
| 13 Oct 2026 | 97.9% | 277 |
| 12 Oct 2026 | 97.9% | 278 |
| 11 Oct 2026 | 98.1% | 278 |
| 10 Oct 2026 | 98.1% | 278 |
| 9 Oct 2026 | 98.2% | 278 |
| 8 Oct 2026 | 98.3% | 279 |
| 7 Oct 2026 | 98.4% | 279 |
| 6 Oct 2026 | 98.4% | 279 |
| 5 Oct 2026 | 98.5% | 279 |
| 4 Oct 2026 | 98.5% | 279 |
| 3 Oct 2026 | 98.2% | 278 |