hydrowet

1940–present

Every flood and every drought since Mansfield Dam closed. The lake has swung across 96 vertical feet — from 614.18 ft in the drought of record (1951) to 710.44 ft on Christmas Day 1991. Today’s 671.84 ft is higher than 52% of all months on record.

62064066068170019501960197019801990200020102020Record low · 614.18 ft1957 flood · 707.4 ftRecord high · 710.44 ft2008–16 drought low · 618.6 ftOct 2018 flood · 704.4 fttoday · 671.84 ft

Monthly mean (line) with monthly min–max band. Dashed teal line = full pool (681 ft).

Record high

710.44 ft

Dec. 25, 1991

Record low

614.18 ft

Aug. 14, 1951 · drought of record

Modern drought low

618.56 ft

Sept. 20, 2013

Spillway

714 ft

never reached

Daily record: TWDB Water Data for Texas (LCRA gauge), aggregated here to monthly min/mean/max. Record dates and elevations: LCRA. Historical daily values are agency-reviewed; recent values are provisional.