Lake Dunlap (Guadalupe River Basin)
Lake Dunlap (also known as TP-1 Dam) is located nine miles northwest of Seguin in Guadalupe County, on the Guadalupe River. The Lake is currently owned by Guadalupe-Blanco River Authority for hydro-electric power generation, water conservation and recreational purposes. Authorization (Permit No. 21) for this project was issued by the State Board of Water Engineers on July 25, 1914. Construction of the dam started in 1927 and was completed in 1928 by Texas Power Corporation. Deliberate impoundment of water and power generation began at the time of completion. The dam is an earthfill embankment with concrete core wall of 2,000 feet long including concrete spillway. The lake has a capacity of 5,900 acre-feet encompassing a surface area of 410 acres at the conservation pool elevation of 575.2 feet above mean sea level. The drainage area above the dam is 1,653 square miles. The water level has been partly regulated by release from the Canyon Reservoir since June 1964.
On May 14, 2019, the Lake Dunlap Dam collapsed, and the lake emptied within a few hours. This site is an archive of the efforts to find a way to fund the restoration of Lake Dunlap, and the campaign to win the election on November 3, 2020 that won overwhelming support from the voters. Work to rebuild the dam officially on May 14, 2021, two years after the dam failed to the day. And finally, after 1,571 days of hard work on behalf of the entire community, the new gates on the Lake Dunlap dam began to be raised. On August 31, 2023, Lake Dunlap is officially back!