F & F
Prudenville, MI48651
Prudenville's typical subsurface geology consists of alternating lenses of sand, clay, and gravel, generally progressing from sand near the surface, to thick clay and then mixed sand and gravel aquifers at greater depths.
Showing contractors within 60 miles of Prudenville. 50 results found.
A geological estimate for the Prudenville area.
Typical Well Depth
Static Water Level
Recommended Method
Based on synthesis of well logs from the Prudenville region, the representative geological profile begins with medium to coarse sand within the upper 10-40 feet, followed by interbedded clay or clay with gravel or sand from about 40 to 80 feet. Deeper zones frequently contain thick sequences of sand and gravel, constituting primary aquifers. Occasional alternations of fine sand and gray clay layers extend downward, particularly evident in deeper, higher-capacity wells. The typical residential well targets the base of the shallow to intermediate sand/gravel aquifer, reaching 65-75 feet for reliable household supply (5-15+ GPM). High-capacity wells may extend up to and beyond 100 ft, occasionally to 300+ ft to penetrate multiple aquifers or thicker confining units.
Depth (Feet) | Formation Type | Description | Characteristics |
---|---|---|---|
0 – 12 ft | Sand | Medium to coarse, sometimes yellow, water-bearing near surface. | Color: Yellow/Gray Hardness: Loose-medium |
12 – 41 ft | Clay (occasional gravel/sand) | Gray clay, sometimes mixed with gravel or sand; acts as partial confining layer. | Color: Gray Hardness: Firm-sticky |
41 – 67 ft | Sand (with gravel) | Medium to coarse sand or sand/gravel; major water-bearing unit for most residential wells. | Color: Yellow/Gray Hardness: Loose-medium |
67 – 83 ft | Clay | Thick gray clay, locally up to 20-60 ft, sometimes interbedded with fine sand. | Color: Gray Hardness: Firm |
83 – 105 ft | Sand & Gravel | Coarse sand & gravel, high-yield aquifer zone, primary source for large-capacity wells. | Color: Gray-Tan Hardness: Loose to firm |