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Holly, Michigan

Well Drillers Near Holly, Michigan

Typical Holly-area well profile: surficial sand, multi-layered clays, thick basal sand/gravel aquifer. Most residential wells terminate in the sand/gravel aquifer at 65–90 ft depth. Static levels 20–50 ft below grade. Rotary mud drilling and PVC casing common.

Showing contractors within 60 miles of Holly. 95 results found.

Typical depth
85 ft
Water table
35 ft
Contractors
95

95 Contractors

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View Local Geology Report

A geological estimate for the Holly area.

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

Detailed Summary

Regional subsurface geology in Holly, MI is dominated by a sequence of surface sand (with or without some silt), underlain by alternating brown/gray clays and occasional thin sand layers. The most prominent aquifer is a medium-to-coarse sand and gravel unit (34–35 ft thick), typically encountered from 53 ft to 87–90 ft. Above this aquifer, the clay/silt layers have cumulative thicknesses of 40–50 ft, often split into brown (nearer surface) and gray subunits. Shallower sand layers (e.g., at 7–8 ft) are thin and generally unsaturated. Deeper consolidated formations (e.g., shale, sandstone) reported in some regional logs are not present within the common drilling depth in Holly. The typical residential well for 10–20+ GPM production is set in the basal sand/gravel; static water levels average 30–50 ft. Modern wells use rotary mud drilling, PVC casing 5" to 77 ft, and bentonite grout from grade to casing base.

Expected Geological Layers

Depth (Feet)Formation TypeDescriptionCharacteristics
0 – 7 ftSandBrown surficial sand, loose, some silt possibleColor: Brown
Hardness: Loose
7 – 20 ftClayBrown clay, plastic, acts as confining unitColor: Brown
Hardness: Firm
20 – 53 ftClayGray clay, some silt, low permeability, regional aquitardColor: Gray
Hardness: Hard
53 – 87 ftSand & GravelMedium to coarse, water-bearing principal aquifer, clean with occasional gravel, minor siltColor: Brown/Gray
Hardness: Loose/Unconsolidated

Frequently Asked Questions

A typical residential well in the Holly area is drilled to approximately 85 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.

Regional subsurface geology in Holly, MI is dominated by a sequence of surface sand (with or without some silt), underlain by alternating brown/gray clays and occasional thin sand layers. The most prominent aquifer is a medium-to-coarse sand and gravel unit (34–35 ft thick), typically encountered from 53 ft to 87–90 ft. Above this aquifer, the clay/silt layers have cumulative thicknesses of 40–50 ft, often split into brown (nearer surface) and gray subunits. Shallower sand layers (e.g., at 7–8 ft) are thin and generally unsaturated. Deeper consolidated formations (e.g., shale, sandstone) reported in some regional logs are not present within the common drilling depth in Holly. The typical residential well for 10–20+ GPM production is set in the basal sand/gravel; static water levels average 30–50 ft. Modern wells use rotary mud drilling, PVC casing 5" to 77 ft, and bentonite grout from grade to casing base.