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Well Drillers Near Green Bay, Wisconsin

Most wells in the Green Bay area encounter clay or mixed glacial till near surface, underlain by limestone/dolomite bedrock, with occasional minor shale or sand zones. Residential wells typically reach 120-160 feet, while high capacity wells may extend several hundred feet into bedrock.

Showing contractors within 60 miles of Green Bay. 29 results found.

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A geological estimate for the Green Bay area.

140 ft

Typical Well Depth

45 ft

Static Water Level

Rotary - Mud Circulation

Recommended Method

Detailed Summary

Analysis of representative well logs from Green Bay and environs shows a consistent near-surface cover of clay-rich glacial sediments (35-50 ft thick, often with minor gravel and occasional hardpan layers), overlying a regionally extensive sequence of limestone/dolomite bedrock. In deeper locations or more central areas, minor shale may be present (notably up to 200+ ft in some deeper wells), with some wells reporting sand/gravel or sandstone interbeds. The majority of residential wells terminate within 120-160 ft, sufficient for steady yields of 5-25 GPM. Static water level ranges from 17-80 ft below land surface for standard wells, and is considerably deeper for high-capacity/deep bedrock supplies.

Expected Geological Layers

Depth (Feet)Formation TypeDescriptionCharacteristics
0 – 45 ftClay/Glacial TillBrown to gray clay, sometimes with gravel, stones, or cobbles; non-caving; locally includes hardpan or minor organic-rich topsoil in uppermost foot.Color: Brown, gray, mottled
Hardness: Soft to firm
45 – 55 ftHardpan/Gravelly Zone (occasional)Dense hardpan, gravel, or clayey gravel—present in some logs, represents basal glacial material; may be lithified locally.Color: Varies
Hardness: Very hard
55 – 250 ftLimestone/DolomiteMassive, gray to buff limestone or dolomite; regional bedrock aquifer yields water to most area wells. Locally fractured or solutioned; minor shale partings possible near top.Color: Gray, buff
Hardness: Hard
250 – 545 ftShale (rare/intermittent deep wells)Gray to greenish shale, relatively soft, interbedded with limestone/dolomite; present only in deeper or south-central Green Bay wells.Color: Gray-green
Hardness: Soft to medium
545 – 580 ftSandstone (deep wells only)Slightly limey or dolomitic sandstone, fine- to medium-grained, water bearing; not present in most standard wells.Color: Light brown to buff
Hardness: Medium
580 – 600 ftLimestone/DolomiteContinued limestone/dolomite sequence (deepest wells).Color: Gray
Hardness: Hard