Lake J.B. Thomas Water Level Today
Texas · Well below full pool
- Elevation
- 2,226.33 ft
- From full pool
- −31.67 ft
- Percent of pool
- 20.4%
- 24-hour change
- −0.03 ft
- 7-day change
- −0.25 ft
- Reading
- Sep 21, 2026 · TWDB
Last year at Lake J.B. Thomas
Lake J.B. Thomas is 31.67 ft below full pool, at 2,226.33 ft, down 0.03 ft in the last 24 hours. That puts the lake at 20.4 percent of its conservation pool.
Over the last 7 days the level fell 0.25 ft, and over 30 days it fell 1.11 ft. In the 400 days of readings on this page the high was 2,235.16 ft on Aug 19, 2025 and the low was 2,226.33 ft on Sep 21, 2026, a range of 8.83 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 J.B. Thomas pool elevations
| Current elevation | 2,226.33 ft |
|---|---|
| Full pool (top of conservation) | 2,258.00 ft |
| Bottom of conservation pool | 2,200.00 ft |
| Conservation capacity | 199,931 acre-ft |
| Surface area at full pool | 3,126 acres |
| 30-day change | −1.11 ft |
| 1-year high | 2,235.16 ft (Aug 19, 2025) |
| 1-year low | 2,226.33 ft (Sep 21, 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 J.B. Thomas level questions
What is the water level of Lake J.B. Thomas today?
Lake J.B. Thomas is at 2,226.33 ft as of Sep 21, 2026, −31.67 ft relative to full pool (2,258.00 ft). The 24-hour change is −0.03 ft.
What is full pool at Lake J.B. Thomas?
Full pool, the top of the conservation pool, is 2,258.00 ft. The bottom of the conservation pool is 2,200.00 ft.
Is Lake J.B. Thomas rising or falling?
Over the last 24 hours the level is −0.03 ft; over 7 days it fell 0.25 ft, and over 30 days it fell 1.11 ft.
Where does this Lake J.B. Thomas level come from?
From the Texas Water Development Board (TWDB) public data feed for Lake J.B. Thomas. Lake Levels Today republishes the agency's daily value without adjustment and links to the source below.