Lake Houston Water Level Today
Texas · At full pool
- Elevation
- 42.36 ft
- From full pool
- −0.02 ft
- Percent of pool
- 99.8%
- 24-hour change
- +0.01 ft
- 7-day change
- −0.12 ft
- Reading
- Sep 21, 2026 · TWDB
Last year at Lake Houston
Lake Houston is at full pool, 42.36 ft, up 0.01 ft in the last 24 hours. That puts the lake at 99.8 percent of its conservation pool.
Over the last 7 days the level fell 0.12 ft, and over 30 days it rose 0.13 ft. In the 400 days of readings on this page the high was 43.38 ft on Jul 15, 2026 and the low was 40.93 ft on Apr 17, 2026, a range of 2.45 ft.
The reading is the Texas Water Development Board gauge, taken Sep 21, 2026. This page is rebuilt once a day from the agency feed; it is not a live gauge, so during a fast rise or a scheduled release check the TWDB page for hourly values.
Lake Houston pool elevations
| Current elevation | 42.36 ft |
|---|---|
| Full pool (top of conservation) | 42.38 ft |
| Bottom of conservation pool | 19.23 ft |
| Conservation capacity | 132,318 acre-ft |
| Surface area at full pool | 11,434 acres |
| 30-day change | +0.13 ft |
| 1-year high | 43.38 ft (Jul 15, 2026) |
| 1-year low | 40.93 ft (Apr 17, 2026) |
| Operating agency | Texas Water Development Board |
Source: Texas Water Development Board. Read what full pool and flood pool mean.
More lakes in Texas
- Canyon Lake 908.33 ft, −0.67 ft from full
- Lake Travis 675.59 ft, −5.41 ft from full
- Lake Texoma 615.33 ft, −1.17 ft from full
- Medina Lake 1,020.96 ft, −43.24 ft from full
- Lake Buchanan 1,018.51 ft, −1.49 ft from full
- Elephant Butte Lake 4,275.92 ft, −129.67 ft from full
Lake Houston level questions
What is the water level of Lake Houston today?
Lake Houston is at 42.36 ft as of Sep 21, 2026, −0.02 ft relative to full pool (42.38 ft). The 24-hour change is +0.01 ft.
What is full pool at Lake Houston?
Full pool, the top of the conservation pool, is 42.38 ft. The bottom of the conservation pool is 19.23 ft.
Is Lake Houston rising or falling?
Over the last 24 hours the level is +0.01 ft; over 7 days it fell 0.12 ft, and over 30 days it rose 0.13 ft.
Where does this Lake Houston level come from?
From the Texas Water Development Board (TWDB) public data feed for Lake Houston. Lake Levels Today republishes the agency's daily value without adjustment and links to the source below.