Water Well Drilling & Service in Denton County, Texas

Denton County stratigraphy — top to bottom

Topsoil — Cross Timbers transition

0–15 ft

Brown-to-reddish loam in western Denton County grading to dark clay loam in the east — the expansive surface soil the well collar sits in.

Comanche Peak / Walnut limestone

15–80 ft

Thin Comanche Peak / Walnut limestone and marl of the Fredericksburg cap above the Paluxy; low-permeability confining cover, not water-bearing.

Paluxy Formation

80–250 ft

Upper Trinity sand and the primary target across central and western Denton County. Distinguishable in southern Denton County; in northern Denton County, where the Glen Rose is absent, it coalesces with the Twin Mountains into the Antlers Formation.

Primary aquifer target

Glen Rose Formation

250–350 ft

Gray-tan interbedded limestone and clay; present in southern Denton County and thinning to absence northward (TWDB Reports 269 and 318).

Twin Mountains Formation

350–450 ft

Deep Trinity basal sand and the lower producing interval. In northern Denton County, where the Glen Rose is absent, the Paluxy and Twin Mountains coalesce into the Antlers Formation.

Primary aquifer target