Texas AI Docket
Texas Water Watch

Reservoir record

Lake J.B. Thomas

Lake J.B. Thomas is 21.3% full, holding 42,537 acre feet against a conservation capacity of 199,931 acre feet.

Updated September 5th, 2026

Percent full21.3%
Storage42,537AF
Conservation capacity199,931AF
Change today-127AF
Across the record-3,383AF
Recorded range21.3% to 23.0%
Record26days

Daily movement

The line follows every verified reading held for this reservoir.

21.0%22.1%23.3% August 11th, 2026, 23.0% fullAugust 12th, 2026, 22.9% fullAugust 13th, 2026, 22.8% fullAugust 14th, 2026, 22.8% fullAugust 15th, 2026, 22.7% fullAugust 16th, 2026, 22.6% fullAugust 17th, 2026, 22.5% fullAugust 18th, 2026, 22.5% fullAugust 19th, 2026, 22.4% fullAugust 20th, 2026, 22.3% fullAugust 21st, 2026, 22.2% fullAugust 22nd, 2026, 22.2% fullAugust 23rd, 2026, 22.1% fullAugust 24th, 2026, 22.1% fullAugust 25th, 2026, 22.0% fullAugust 26th, 2026, 21.9% fullAugust 27th, 2026, 21.9% fullAugust 28th, 2026, 21.8% fullAugust 29th, 2026, 21.8% fullAugust 30th, 2026, 21.7% fullAugust 31st, 2026, 21.6% fullSeptember 1st, 2026, 21.5% fullSeptember 2nd, 2026, 21.4% fullSeptember 3rd, 2026, 21.4% fullSeptember 4th, 2026, 21.3% fullSeptember 5th, 2026, 21.3% fullAug 11thAug 24thSep 5th
Daily percent full. The vertical scale follows this record's own range instead of starting at zero, so its movement stays visible without changing the measurement.

The readings

Daily movement appears only when the previous reading is from the prior calendar day.

DatePercent fullStorageDaily movement
September 5th, 202621.3%42,537 AF-127 AF
September 4th, 202621.3%42,664 AF-127 AF
September 3rd, 202621.4%42,791 AF-96 AF
September 2nd, 202621.4%42,887 AF-159 AF
September 1st, 202621.5%43,046 AF-128 AF
August 31st, 202621.6%43,174 AF-160 AF
August 30th, 202621.7%43,334 AF-159 AF
August 29th, 202621.8%43,493 AF-129 AF
August 28th, 202621.8%43,622 AF-128 AF
August 27th, 202621.9%43,750 AF-64 AF
August 26th, 202621.9%43,814 AF-129 AF
August 25th, 202622.0%43,943 AF-192 AF
August 24th, 202622.1%44,135 AF-97 AF
August 23rd, 202622.1%44,232 AF-129 AF
August 22nd, 202622.2%44,361 AF-129 AF
August 21st, 202622.2%44,490 AF-130 AF
August 20th, 202622.3%44,620 AF-162 AF
August 19th, 202622.4%44,782 AF-129 AF
August 18th, 202622.5%44,911 AF-130 AF
August 17th, 202622.5%45,041 AF-129 AF
August 16th, 202622.6%45,170 AF-163 AF
August 15th, 202622.7%45,333 AF-163 AF
August 14th, 202622.8%45,496 AF-97 AF
August 13th, 202622.8%45,593 AF-196 AF
August 12th, 202622.9%45,789 AF-131 AF
August 11th, 202623.0%45,920 AFFirst reading

Every reading is available in the open water record.