Yordy & Sons
Decatur, MI49045
The typical Decatur area well penetrates a sequence of clay, sand/gravel, and coarse sand/gravel aquifers, with residential supply wells commonly completed around 90-110 ft for 10-15 GPM.
Showing contractors within 60 miles of Decatur. 60 results found.
A geological estimate for the Decatur area.
Typical Well Depth
Static Water Level
Recommended Method
Synthesis of well logs in the Decatur, MI region shows a consistent stratigraphy of surficial clay (often intermixed with sand), transitioning to significant sand and/or gravel aquifers which are the main target for residential and high-capacity wells. Typical wells encounter alternating clay and sand/gravel beds, with coarsest and most productive layers at depths of 80-130 ft. Residential wells for household use are usually screened between 90-110 ft, yielding 10-15+ GPM. Static water levels are typically 30-80 ft below grade. Rotary mud drilling is the standard method, with PVC casing and bentonite slurry grouting predominating.
Depth (Feet) | Formation Type | Description | Characteristics |
---|---|---|---|
0 – 3 ft | Clay/Topsoil | Brown/black clay and topsoil, may include some sand near surface. | Color: Brown/Black Hardness: Soft |
3 – 25 ft | Clay and Sand (interbedded) | Alternating brown clay and sand/sandy clay. Acts as confining material. | Color: Brown/Gray Hardness: Firm |
25 – 55 ft | Sand and Gravel | Mixed fine to coarse sand and gravel, brown to gray. Good permeability. | Color: Brown/Gray Hardness: Medium/Loose |
55 – 80 ft | Clay (occasionally with Gravel) | Gray to brown clay, occasional gravel inclusions. | Color: Gray/Brown Hardness: Firm |
80 – 110 ft | Coarse Sand and Gravel (Aquifer) | Predominantly coarse brown sand, often with significant gravel. Principal aquifer zone for residential wells. | Color: Brown Hardness: Medium/Loose |
110 – 135 ft | Gravel with Sand | Coarse gravel, typically mixed with sand. Yields increase with depth; commonly targeted for high-capacity wells. | Color: Brown/Gray Hardness: Loose |