Bill Cragg Water Well Drilling
Caro, MI 48723
Typical Caro area well profile: glacial drift (clay, sand/gravel) overlying bedrock (shale/sandstone). Residential wells typically 100-220 ft; high yields from deep sandstone aquifers.
Showing contractors within 60 miles of Caro. 62 results found.













Check depths and logs of existing wells in the area before you drill.
Open well map →Costs, permits, maintenance tips for private wells in Michigan.
Open guide →A geological estimate for the Caro area.
Based on a synthesis of regional well logs, the Caro area typically exhibits a sequence of Quaternary glacial drift (clay, sand, and gravel layers) from surface to depths of ~100-140 ft, underlain by alternating layers of shale and sandstone. Shallower wells often terminate in coarse sand/gravel or shallow sandstone, but most high-yield or high-capacity wells penetrate deeper into fractured or porous sandstone aquifers (often at 150-220+ ft). Shale intervals are common between and above these aquifers. The most consistent sequence is surface clay transitioning through sand/gravel, then into alternating shale and sandstone. Static water levels are moderate (15-45 ft below grade). Bedrock sandstone is the principal source for large capacity yields (>10 GPM), with typical residential wells set from 100-220 ft depending on desired yield and geology at the site.
| Depth (Feet) | Formation Type | Description | Characteristics |
|---|---|---|---|
| 0 – 15 ft | Clay | Brown or gray, commonly dense, silty clay as part of glacial drift. | Color: Brown/Gray Hardness: Soft |
| 15 – 40 ft | Sand/Sand & Gravel | Fine to coarse sand and occasional gravel, water-bearing, glacial origin. | Color: Brown/Gray Hardness: Loose to moderately compact |
| 40 – 80 ft | Clay/Clay & Gravel | Interbedded clay with occasional gravel, acts as an aquitard. | Color: Gray/Brown Hardness: Firm |
| 80 – 140 ft | Sand & Gravel/Hardpan | Mixed sand, gravel, and occasional hardpan or compacted till. | Color: Brown/Gray Hardness: Medium to dense |
| 140 – 160 ft | Shale | Thin to medium bedded black or white shale, locally layered with limestone. | Color: Black/White Hardness: Moderately hard |
| 160 – 220 ft | Sandstone (with minor shale interbeds) | Water-bearing white/remanent sandstone, fractured and highly productive in lower interval; may include minor shale laminations. | Color: White/Tan (minor gray) Hardness: Hard |