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Grand Blanc, Michigan

Well Drillers Near Grand Blanc, Michigan

The typical Grand Blanc area well penetrates thick clay with thin sand/gravel interbeds, terminating in sandstone bedrock at depths of 160-280 feet.

Showing contractors within 60 miles of Grand Blanc. 95 results found.

Typical depth
180 ft
Water table
35 ft
Contractors
95

95 Contractors

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View Local Geology Report

A geological estimate for the Grand Blanc area.

Typical Well Depth
180 ft
Static Water Level
35 ft
Recommended Method
Rotary - Mud Circulation

Detailed Summary

Based on an aggregate of representative well logs, the common geologic sequence in Grand Blanc consists of an upper clay unit (sometimes with boulders, stones, and thin sand/sand & gravel layers) from surface to about 100-120 ft, underlain by sand or sand & gravel lenses (20-60 ft thick), with additional clay or mixed lenses. Bedrock (sandstone, sometimes with shale) is encountered at 120-190 ft, and most wells are completed in the sandstone to total depths of ~160-280 ft. The static water level typically ranges from 20-65 ft. Typical household wells targeting 10+ GPM are completed at depths of 160-200 ft, while higher capacity wells may range up to 280 ft or more.

Expected Geological Layers

Depth (Feet)Formation TypeDescriptionCharacteristics
0 – 12 ftClay (variable color: yellow/brown/gray)Surface clay, sometimes mottled; may include topsoil/silt.Color: Brown/Yellow/Gray
Hardness: Soft
12 – 90 ftClay (w/ occasional sand, gravel or stones)Thick lacustrine or glacial clay, with intervals of blue/gray color and occasional stones/boulders or thin sand/sand & gravel interbeds.Color: Gray/Blue/Brown
Hardness: Soft to Medium
90 – 130 ftSand & Gravel (sometimes mixed with clay)Predominantly sand and gravel with some clay layers, providing secondary aquifers.Color: Gray/Brown
Hardness: Medium
130 – 160 ftClay or Sandy Clay, w/ occasional stonesIntermediate clay with rare sand or stones, often blue or gray.Color: Gray/Blue
Hardness: Medium
160 – 280 ftSandstone (bedrock, sometimes with shale)Consolidated sandstone forming principal bedrock aquifer, sometimes with shale or broken zones at top.Color: White/Gray/Light Brown
Hardness: Hard

Frequently Asked Questions

A typical residential well in the Grand Blanc area is drilled to approximately 180 feet to ensure a reliable water supply of 5-15+ gallons per minute.

The static water level, or water table, is typically found around 35 feet below the surface in this region.

Based on an aggregate of representative well logs, the common geologic sequence in Grand Blanc consists of an upper clay unit (sometimes with boulders, stones, and thin sand/sand & gravel layers) from surface to about 100-120 ft, underlain by sand or sand & gravel lenses (20-60 ft thick), with additional clay or mixed lenses. Bedrock (sandstone, sometimes with shale) is encountered at 120-190 ft, and most wells are completed in the sandstone to total depths of ~160-280 ft. The static water level typically ranges from 20-65 ft. Typical household wells targeting 10+ GPM are completed at depths of 160-200 ft, while higher capacity wells may range up to 280 ft or more.