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Jefferson, South Dakota

Well Drillers Near Jefferson, South Dakota

Typical Jefferson residential wells encounter topsoil, thick clay, sand/gravel aquifer, and sandstone to bedrock within 280–350 ft.

Showing contractors within 60 miles of Jefferson. 13 results found.

Typical depth
160 ft
Water table
21 ft
Contractors
13

13 Contractors

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Well records near Jefferson

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View Local Geology Report

A geological estimate for the Jefferson area.

Typical Well Depth
160 ft
Static Water Level
21 ft
Recommended Method
Rotary - Mud Circulation

Detailed Summary

Analysis of well logs for the Jefferson region reveals a common stratigraphic sequence: a thin layer of topsoil, underlain by thick glacial clay, followed by a significant sand and/or gravel aquifer beginning around 60–120 ft, and then sandstone or bedrock often reached between 280 and 350 ft. The most productive residential wells for reliable yields (5–15+ GPM) are generally completed in the sand/gravel or basal sandstone intervals at 130–300 ft, with static water levels typically 15–25 ft below ground.

Expected Geological Layers

Depth (Feet)Formation TypeDescriptionCharacteristics
0 – 2 ftTopsoilsurface organicsColor: Dark brown
Hardness: Soft
2 – 22 ftClayglacial till, compact, occasionally siltyColor: Brown-grey
Hardness: Stiff
22 – 61 ftFine Sandfine sand, trace silt or gravel in placesColor: Tan-yellow
Hardness: Medium
61 – 119 ftSand & Gravelwater-bearing coarse sand and pea-to-medium gravelColor: Light tan
Hardness: Loose
119 – 287 ftWater-Bearing Sand/Gravel with Siltaquifer zone; mostly sand with intermixed gravel, some silt; main water sourceColor: Light grey-tan
Hardness: Loose
287 – 289 ftSandstonebedrock transition, fine-grained, occasional shale streaksColor: Light brown
Hardness: Hard

Frequently Asked Questions

A typical residential well in the Jefferson area is drilled to approximately 160 feet to ensure a reliable water supply of 5-15+ gallons per minute.

The static water level, or water table, is typically found around 21 feet below the surface in this region.

Analysis of well logs for the Jefferson region reveals a common stratigraphic sequence: a thin layer of topsoil, underlain by thick glacial clay, followed by a significant sand and/or gravel aquifer beginning around 60–120 ft, and then sandstone or bedrock often reached between 280 and 350 ft. The most productive residential wells for reliable yields (5–15+ GPM) are generally completed in the sand/gravel or basal sandstone intervals at 130–300 ft, with static water levels typically 15–25 ft below ground.