Lake Dunlap

Impounded by TP-1 Dam

Lake Measurements

Surface Area (in acres)
Storage Capacity (in acre-feet)

Belongs to

Lake Dunlap is part of or belongs to the following places.

Lake Maintained or Owned by

Guadalupe-Blanco River Authority

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Date of Origin

1928 95 years ago

Currently Exists


Place type

Lake Dunlap is classified as a Lake


  • Power generation

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Handbook of Texas

Adapted from the official Handbook of Texas , a digital state encyclopedia developed by the Texas State Historical Association (TSHA). It is an authoritative source of trusted historical records

Lake Dunlap is on the Guadalupe River nine miles northwest of Seguin in Guadalupe County (at 29°39' N, 98°04' W). The lake was completed in 1928, and in 1967 it had a capacity of 5,900 acre-feet and a surface area of 406 acres at 575 feet above mean sea level. A canal diverts water to the powerhouse two miles downstream from the dam. The hydroelectric power plant for this project contains two generating units and has a total capacity of 3,600 kilowatts. Since June 1964 the river flow has been partly regulated by releases from Canyon Reservoir. The drainage area above the dam is 1,653 square miles. The project is owned and operated by the Guadalupe-Blanco River Authority for generation of hydroelectric power. The Authority purchased this and five other projects located on the Guadalupe River by a contract that became effective May 1, 1963. Recreational facilities have prompted the building of lake houses and summer residences around the lake.

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Seth D. Breeding | © Texas State Historical Association