
Bayes Water Treatment
Sparta, MI 49345
Rockford area wells typically encounter a surficial clay or mixed till, underlain by alternating clay and sand/gravel layers, often transitioning into thick sand and occasional bedrock at greater depths.
Showing contractors within 60 miles of Rockford. 93 results found.














Check depths and logs of existing wells in the area before you drill.
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Open guide →A geological estimate for the Rockford area.
A representative geological profile in the Rockford, MI region (including Grand Rapids and nearby townships) begins with a surficial clay or mixed glacial till, commonly 7-15 ft thick. This is most often underlain by alternating sequences of clay (red, brown, blue) and sand; gravel and sand/gravel mixes frequently appear beneath or within these units to depths of 60-85 ft. Several wells report a persistent thick sand/gravel aquifer (commonly between 27-70 ft thick). Deeper wells (rare in this sample) may transition into extensive clay, then gravel and bedrock (limestone/sandstone). The most common aquifer source for residential wells is sand or sand/gravel layers between 30 and 90 ft depth, producing 10-30+ GPM. Bedrock or deeper sandstones appear only in the deepest wells (rarely needed for residential supply). Typical static water levels range from 29 to 86 ft, with most around 30-41 ft. Residential wells (5–15+ GPM) are generally screened in sand/gravel at 65–90 ft, with average casing to 70–85 ft.
| Depth (Feet) | Formation Type | Description | Characteristics |
|---|---|---|---|
| 0 – 12 ft | Clay | Glacial till, mottled (occasionally red, brown, blue) | Color: Variable (brown, red, blue) Hardness: Soft to medium |
| 12 – 30 ft | Clay with sand and gravel interbeds | Mixed lenses, becoming sandier with depth | Color: Brown to gray Hardness: Medium |
| 30 – 65 ft | Sand (occasional gravel) | Clean to silty sand, minor gravel beds; major aquifer in most wells | Color: Light brown/gray Hardness: Loose to medium |
| 65 – 85 ft | Clay, brown/blue | Dense clay, occasional sand stringers | Color: Blue/gray/brown Hardness: Hard |
| 85 – 90 ft | Sand/gravel (water-bearing) | Aquifer zone; most screens set here for deeper household wells | Color: Light brown/gray Hardness: Loose |
| 90 – 130 ft | Clay with occasional sand/gravel beds (deep wells only) | Clay dominant, possibly with deeper sand/gravel for high-capacity wells | Color: Gray/brown Hardness: Very hard |
| 130 – 244 ft | Bedrock (limestone & sandstone) | Solid bedrock; only encountered in deepest wells. Not typical for residential. | Color: Gray/light brown Hardness: Very hard |