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St Clair, Michigan

Well Drillers Near St Clair, Michigan

St Clair region wells commonly penetrate thick clay layers with occasional sand or hardpan lenses underlain by sandstone or gravelly layers, suitable for residential supply at 80-130 ft depth.

Showing contractors within 60 miles of St Clair. 48 results found.

Typical depth
110 ft
Water table
37 ft
Contractors
48

48 Contractors

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View Local Geology Report

A geological estimate for the St Clair area.

Typical Well Depth
110 ft
Static Water Level
37 ft
Recommended Method
Rotary - Mud Circulation

Detailed Summary

Geologic profiles of water wells in St Clair County, MI, show a typical sequence beginning with a thin topsoil, followed by alternating lenses of yellow and gray clay (70-115 ft thick), sometimes interbedded with thin sand or hardpan. Beneath the clay, wells may encounter a water-bearing sand or a hardpan zone (gravel/clay mix), but the most consistent deeper formation is sandstone or, less commonly, shale. Most residential wells obtain 5-15+ GPM from sand/gravel zones or the upper part of the sandstone at depths of 80-130 ft. Static water levels are usually 30-40 ft below grade. Rotary with mud circulation and bentonite/cement grout is standard practice.

Expected Geological Layers

Depth (Feet)Formation TypeDescriptionCharacteristics
0 – 1 ftTopsoilBrown-black organic topsoilColor: Brown/black
Hardness: Soft
1 – 8 ftClay - YellowYellow silty or sandy clayColor: Yellow
Hardness: Firm
8 – 90 ftClay - GrayGray clay, occasionally layered with minor sand or silt lensesColor: Gray
Hardness: Firm/Hard
90 – 120 ftHardpan / Mixed Clay/GravelHard silty clay, occasionally with gravel or sand; sometimes noted as 'hardpan' or 'clay & gravel'Color: Mixed gray/brown
Hardness: Hard
120 – 130 ftSand / Water-Bearing Sand or Sandstone TransitionSand with increasing cementation—transition to sandstone or sometimes minor shale at topColor: Yellow-brown
Hardness: Loose to friable
130 – 156 ftSandstone (or locally Shale/Sandstone mix)Massive sandstone, sometimes interbedded with shale (rarely), functioning as the main aquifer base in deep wellsColor: Gray-yellow; black where organic/shale is present
Hardness: Hard

Frequently Asked Questions

A typical residential well in the St Clair area is drilled to approximately 110 feet to ensure a reliable water supply of 5-15+ gallons per minute.

The static water level, or water table, is typically found around 37 feet below the surface in this region.

Geologic profiles of water wells in St Clair County, MI, show a typical sequence beginning with a thin topsoil, followed by alternating lenses of yellow and gray clay (70-115 ft thick), sometimes interbedded with thin sand or hardpan. Beneath the clay, wells may encounter a water-bearing sand or a hardpan zone (gravel/clay mix), but the most consistent deeper formation is sandstone or, less commonly, shale. Most residential wells obtain 5-15+ GPM from sand/gravel zones or the upper part of the sandstone at depths of 80-130 ft. Static water levels are usually 30-40 ft below grade. Rotary with mud circulation and bentonite/cement grout is standard practice.