
Sam's Well Drilling
Randolph, WI53956
Typical geology in the Friendship, Adams County region is a sequence of unconsolidated sands, interbedded with minor sandy clay, gravel, and occasional clay, overlying sandstone at greater depths. Most domestic wells are constructed entirely within these unconsolidated sand and gravel units.
Showing contractors within 60 miles of Friendship. 34 results found.
A geological estimate for the Friendship area.
Typical Well Depth
Static Water Level
Recommended Method
Based on the sample of well logs from Friendship and surrounding areas in Adams County, the most representative geological sequence begins with a surface sand layer (commonly extending 25–35 ft), underlain by sandy clay or clay (when present) for roughly 5–15 ft, then transitioning to thick zones of sand or sand/gravel mixtures typically continuing to the base of the commonly drilled interval (60 to 105 ft). In deeper, high-capacity wells or rotary wells, sandstone is frequently encountered beneath these deposits. The water table (static level) usually sits between 10 and 35 feet below ground. A standard residential well seeking 5–15+ GPM yield is most often completed at about 65–75 feet, with some higher-capacity or rotary wells going deeper, commonly to 100–105 feet, with screens set in the deeper sand or initial bedrock zones.
Depth (Feet) | Formation Type | Description | Characteristics |
---|---|---|---|
0 – 30 ft | Sand | Loose to medium sand, sometimes fine, generally clean, non-caving | Color: Tan to light brown Hardness: Unconsolidated |
30 – 40 ft | Sandy Clay / Clay | Sandy clay or clay, sometimes gray or mixed, minor gravel may occur; acts as a semi-confining layer in some locations | Color: Gray to brown Hardness: Firm |
40 – 65 ft | Sand & Gravel | Medium to coarse sand with increasing gravel content below 45 ft; excellent aquifer zone, common screen location | Color: Tan to gray Hardness: Unconsolidated |
65 – 100 ft | Coarse Sand / Watersand | Coarse sand, sometimes with gravel or recorded as 'watersand'; most productive water-bearing interval for most wells. Deeper wells may encounter transition to sandy or fractured sandstone. | Color: Light brown to yellowish Hardness: Unconsolidated to soft rock |
100 – 105 ft | Sandstone (where applicable) | Soft sandstone; not present in all wells, encountered mainly in deepest rotary-drilled wells | Color: Light brown Hardness: Soft rock |