Denton & Sons Well Drilling
Sand Lake, MI49343
The representative geological profile for the Sand Lake area consists of alternating layers of sand/gravel and clay, with sand/gravel units generally serving as water-bearing zones and clays acting as confining layers. Residential wells typically reach water-bearing sand/gravel by 40-60 ft., but some require deeper drilling to over 100 ft. for sufficient yield.
Showing contractors within 60 miles of Sand Lake. 67 results found.
A geological estimate for the Sand Lake area.
Typical Well Depth
Static Water Level
Recommended Method
Analysis of well logs from the Sand Lake region indicates that most wells encounter an upper sand or sand and clay mix from the surface down to approximately 15-20 ft. This is often followed by a significant clay or clay with silt layer extending to 40-60 ft. Below this, water-bearing sand and gravel is common, extending variably to 50-100+ ft., with intermittent clay lenses. In deeper wells (over 100 ft.), an additional thick clay layer is present between upper and lower sand zones. Typical static water levels range from 18-42 ft. below grade. Rotary mud circulation is most common for recent installations. The standard residential well reaches 50-80 ft. for a reliable 10-15 GPM, while high-capacity wells may target deeper (up to 200 ft.) sand/gravel zones for greater yield.
Depth (Feet) | Formation Type | Description | Characteristics |
---|---|---|---|
0 – 3 ft | Topsoil | Dark, organic-rich soil; occasionally omitted in some logs but common as a surface layer. | Color: Brown/Black Hardness: Soft |
3 – 15 ft | Sand (may locally contain some clay or gravel) | Fine to medium sand, sometimes with minor clay or gravel. | Color: Light tan Hardness: Loose |
15 – 45 ft | Clay to Clay with Silt/Sand | Plastic clay, sometimes interbedded with silt or thin sand lenses (~30 ft avg). Local variations include blue, gray, or red hues. | Color: Gray to blue or red Hardness: Hard plastic |
45 – 75 ft | Sand & Gravel (Water Bearing Zone) | Coarse sand and gravel, primary aquifer for most wells. Locally may be separated by thin clay beds. | Color: Tan/Gray Hardness: Loose to medium |
75 – 120 ft | Clay/clay with occasional silt | Thick confining clay, not always present but typical for deeper/western wells. | Color: Gray, blue, or red Hardness: Hard plastic |
120 – 202 ft | Sand & Gravel (Deep Water Bearing Zone) | Lower sand/gravel aquifer, occurs only in deepest wells; yields highest flow for high-capacity wells. | Color: Tan/Gray Hardness: Loose to medium |