Reservoir · Texas · United States · USGS NWIS
Lake Houston
91.6% full
Capacity
180.95 hm³
Volume stored
166 hm³
Coordinates
29.916°N, 95.141°W
Last updated
2026-09-30
Current fill
91.6%vs 7 days ago
-1.0%losing
vs 1 year ago
-1.1%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. 29.916, -95.141 · Open in Google Maps
About Lake Houston
As of September 30, 2026, Lake Houston is filled to 91.6% of its total capacity, holding roughly 166 hm³ of water out of a maximum 181 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has held broadly steady (-1.0 pts), and it is 1.1 points below its level on the same date a year earlier.
Across the readings we hold for Lake Houston — 1461 data points between October 1, 2022 and September 30, 2026 — the level has ranged from a low of 81.7% (March 13, 2025) to a high of 105.0% (January 30, 2023). On average the reservoir is fullest around May and at its lowest around October.
It is operated by USGS primarily for multiple purposes. It lies within the Texas basin at 29.916°N, 95.141°W.
Key facts
- Current fill level
- 91.6%
- Water stored
- 166 hm³
- Total capacity
- 181 hm³
- 7-day change
- ▼ 1.0 pts
- Year-on-year
- ▼ 1.1 pts
- Primary use
- Multipurpose
- River basin
- Texas
- Operator
- USGS
- Coordinates
- 29.916°N, 95.141°W
- Last updated
- September 30, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 30 Sep 2026 | 91.6% | 166 |
| 29 Sep 2026 | 91.7% | 166 |
| 28 Sep 2026 | 91.8% | 166 |
| 27 Sep 2026 | 92.1% | 167 |
| 26 Sep 2026 | 92.1% | 167 |
| 25 Sep 2026 | 92.2% | 167 |
| 24 Sep 2026 | 92.3% | 167 |
| 23 Sep 2026 | 92.6% | 168 |
| 22 Sep 2026 | 92.5% | 167 |
| 21 Sep 2026 | 92.6% | 168 |
| 20 Sep 2026 | 92.6% | 168 |
| 19 Sep 2026 | 92.9% | 168 |