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Lake levels › Texas › Lake L. B. Johnson

Lake L. B. Johnson water level today

824.58 ft above sea level (the reading for October 20, 2026). The lake is 97.6% full, 0.42 ft below full pool (825.00 ft). Lake L. B. Johnson is falling slowly: down 0.16 ft in the past 7 days and down 0.19 ft over 30 days.

Texas Water Development Board publishes one reading per day for Lake L. B. Johnson; today's value appears once the agency posts it, usually the next morning.

Level now824.58 ft
Percent full97.6%
vs full pool (825.0)−0.42 ft
Past 24 hours−0.21 ft
Past 7 days−0.16 ft
Past 30 days−0.19 ft
vs 1 year ago−0.01 ft

Lake L. B. Johnson level over the last 12 months

823.6824.0824.4824.8825.2 Oct 25Dec 25Feb 26Apr 26Jun 26Aug 26Oct 26 full pool 825.0
Daily elevation in feet, last 12 months.

12-month low: 823.75 ft (July 17, 2026). High: 824.90 ft (April 24, 2026). Swing: 1.15 ft.

Daily Lake L. B. Johnson levels, last 30 days

DateElevation (ft)Change
Oct 20, 2026824.58−0.21 ft
Oct 19, 2026824.79+0.14 ft
Oct 18, 2026824.65+0.03 ft
Oct 17, 2026824.62−0.09 ft
Oct 16, 2026824.71−0.02 ft
Oct 15, 2026824.73−0.03 ft
Oct 14, 2026824.76+0.02 ft
Oct 13, 2026824.74−0.03 ft
Oct 12, 2026824.77+0.08 ft
Oct 11, 2026824.69−0.03 ft
Oct 10, 2026824.72−0.01 ft
Oct 9, 2026824.73+0.05 ft
Oct 8, 2026824.68−0.01 ft
Oct 7, 2026824.69−0.06 ft
Oct 6, 2026824.75+0.02 ft
Oct 5, 2026824.73+0.35 ft
Oct 4, 2026824.38+0.22 ft
Oct 3, 2026824.16−0.13 ft
Oct 2, 2026824.29−0.20 ft
Oct 1, 2026824.49−0.02 ft
Sep 30, 2026824.51−0.17 ft
Sep 29, 2026824.68−0.09 ft
Sep 28, 2026824.77−0.05 ft
Sep 27, 2026824.82+0.01 ft
Sep 26, 2026824.81−0.04 ft
Sep 25, 2026824.85−0.02 ft
Sep 24, 2026824.87+0.04 ft
Sep 23, 2026824.83+0.01 ft
Sep 22, 2026824.82+0.01 ft
Sep 21, 2026824.81+0.04 ft

Monthly average levels

MonthAverageLowHigh
Nov 2025824.61824.29824.76
Dec 2025824.73824.67824.79
Jan 2026824.69824.51824.79
Feb 2026824.76824.63824.82
Mar 2026824.74824.61824.81
Apr 2026824.74824.50824.90
May 2026824.66824.41824.84
Jun 2026824.71824.46824.90
Jul 2026824.57823.75824.76
Aug 2026824.74824.58824.82
Sep 2026824.77824.51824.87
Oct 2026 *824.63824.16824.79

* partial month or year.

Lake L. B. Johnson year by year

YearLowHighAverage
2026 *823.75 Jul 17824.90 Jun 3824.70
2025824.03 Jul 13824.83 Feb 7824.70
2024824.29 Jul 24824.84 Sep 25824.71
2023 *824.52 Oct 26824.81 Dec 2824.71

Lake L. B. Johnson on this date in past years

YearLevel on this dateToday vs then
2025824.59 ft−0.01 ft
2024824.64 ft−0.06 ft
2023824.64 ft−0.06 ft

Highest and lowest levels on record

TWDB records for Lake L. B. Johnson go back to 1951. The lowest level in that record is 793.80 ft (November 16, 1970) and the highest is 828.00 ft (September 11, 1952). Today the lake is 30.78 ft above its record low. At full conservation pool it holds 112,778 acre-feet and covers about 6,393 acres.

Is Lake L. B. Johnson full?

Lake L. B. Johnson is 97.6% full by conservation storage, measured against its top of conservation pool at 825.00 ft. It would need to rise 0.42 ft to be full.

Is Lake L. B. Johnson rising or falling?

Lake L. B. Johnson is falling slowly: down 0.16 ft in the past 7 days and down 0.19 ft over 30 days. In the latest day it moved −0.21 ft.

How does Lake L. B. Johnson compare with last year?

That is about the same as a year ago. Two years ago on this date it stood at 824.64 ft.

Data source

Texas Water Development Board (Water Data for Texas), gauge LyndonBJohnson; readings since Oct 16, 2023. Official source · how we collect it.

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