Bogart Well Drilling LLC
Crystal, MI 48818
The typical geological profile for the Crystal city region features an upper clay-rich horizon overlying stratified sand, gravel, and mixed sand/clay/silt units, with water-bearing sands and gravels most common below 40–60 feet. Typical residential wells are 60–80 ft deep.
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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 Crystal area.
Geological logs across Crystal and surrounding areas show a consistent pattern: surface to ~15–20 ft is dominated by clay or clayey sands, sometimes with minor loam. Below this, sequences of mixed gravels, sandy clays, and fine-to-medium sand typically occur down to around 40–60 ft. The main water-bearing formations are persistent sand or sand/gravel units found from ~50 to 80 ft, sometimes interbedded with gravelly clay or silt. Deeper units (if drilled) are more often thick gray or tan clays, with occasional thin sand/gravel seams. Residential well completions typically target the sand/gravel between 55 and 85 ft for 5–15+ GPM.
| Depth (Feet) | Formation Type | Description | Characteristics |
|---|---|---|---|
| 0 – 2 ft | Soil/Loam | Topsoil or sandy loam, minor organic roots | Color: Brown Hardness: Soft |
| 2 – 15 ft | Clay or Clayey Sand | Brown to tan moist to wet clay, may be sandy or silty in part | Color: Brown/Tan Hardness: Firm to stiff |
| 15 – 25 ft | Gravel | Stratified sand and gravel, locally water-bearing, coarse in part | Color: Brown to gray Hardness: Loose to firm |
| 25 – 50 ft | Clay/Silty Clay with Sand Layers | Gray or tan clay with sand and/or silt streaks; variable thickness | Color: Tan/Gray Hardness: Stiff |
| 50 – 75 ft | Sand (main water-bearing unit) | Fine-to-medium sand, often water-bearing, sometimes mixes with gravel | Color: Tan/Light Gray Hardness: Loose |
| 75 – 90 ft | Sand & Gravel | Coarser sand and gravel, principal aquifer for most residential wells; high permeability | Color: Brown/Gray Hardness: Loose to medium |
| 90 – 120 ft | Clay with Thin Sand Intervals | Gray clay, occasional thin sand, silt, or gravel seams | Color: Gray Hardness: Very Stiff |
| 120 – 160 ft | Interbedded Sand, Gravel, Clay | Cycles of clay, silt, sand, and gravel. Water-bearing sands become rarer and thinner | Color: Mixed Hardness: Variable |