The Lake Dunlap plate. Relief from Copernicus GLO-30; rivers and lakes from USGS NHD; watersheds from the USGS Watershed Boundary Dataset; roads and city limits from Census TIGER 2024.
Chance of showers
Showers likely
Mostly cloudy; cooler
Mostly sunny
Mostly cloudy
Chance of showers
Partly cloudy
23° on Nov. 14, 2018, the coldest reading for this week of the year since 1996. Next is 29° in 2011.
Lake Dunlap’s center stands about 600 ft above sea level. Within three miles the land runs from 570 ft to 710 ft, a difference of 140 ft: gently rolling country. The highest named summit within 15 miles is Mission Hill, about 970 ft, 6 miles west-northwest.
Under the town center the state geologic map shows Terrace deposits (sand), from the Pleistocene to Holocene, less than 2.6 million years old.
The section below crosses 4 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 30×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Coarse-detrital, fine-detrital. Age: Pleistocene, less than 2.6 million years old. About 14 mi of the line.
Limestone. Age: Early Cretaceous, 100 to 113 million years old. About 7 mi of the line.
Sand. Age: Pleistocene to Holocene, less than 2.6 million years old. About 3 mi of the line.
Limestone. Age: Late Cretaceous, 66 to 100 million years old. About 0.7 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale.
Heights from Copernicus GLO-90 (a surface model: it includes buildings and tree canopy); summits from USGS GNIS; rivers from USGS NHDPlus HR; rock from the USGS State Geologic Map Compilation.
A raindrop that lands in Lake Dunlap reaches the Gulf of America by way of the Guadalupe and the South Guadalupe: about 270 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Lake Dunlap; river miles along the main stem, rounded.
Lake Dunlap has a humid subtropical climate. Summer afternoons average 97° in August; winter nights fall to about 40° in January. About 31 inches of rain fall in a normal year.
Normals 1991–2020 and records since 1996 at New Braunfels Municipal Airport, 3 miles northeast. NOAA, through RCC-ACIS.
