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Well Drillers Near Randolph, Wisconsin

The Randolph area features a consistent geological profile of shallow clay over glacial gravels and/or silty clay, transitioning to thick limestone/dolomite, then extensive sandstone, sometimes interbedded with shale.

Showing contractors within 60 miles of Randolph. 47 results found.

Water Wells logo

Water Wells

6400 Lake Rd, Windsor, WI 53598

Phone: (608) 846-4697
Quote Available

C&C Pumps logo

C&C Pumps

1480 WI, Hartford, WI 53027

Phone: (262) 789-7334
Quote Available

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View Local Geology Report

A geological estimate for the Randolph area.

130 ft

Typical Well Depth

30 ft

Static Water Level

Rotary - Mud Circulation

Recommended Method

Detailed Summary

Based on reviewed well logs in the Randolph area and nearby communities, the typical subsurface profile starts with thin clay (often with gravel/silty materials), followed by a significant massive limestone/dolomite layer, and then a thick, water-bearing sandstone formation that serves as the main aquifer. Occasional shale interbeds may be noted in the transition from limestone to sandstone. The most common drill method is rotary with mud circulation. Residential wells typically reach depths of 120–140 feet to access sufficient, reliable yields. High-capacity wells often extend deeper to optimize yields from the sandstone aquifer.

Expected Geological Layers

Depth (Feet)Formation TypeDescriptionCharacteristics
05 ftClayStiff to silty clay, occasionally black dirt or with minor gravelColor: Brown/Black
Hardness: Firm
515 ftSilty Clay/GravelSilty clay with gravel, stones, occasional boulders; local valleys may have thicker depositsColor: Mixed
Hardness: Medium
1580 ftLimestone/DolomiteLimestone or dolomite, occasionally with thin interbedded shale layersColor: Gray/Buff
Hardness: Hard
80130 ftSandstoneFine to medium sandstone, commonly the main water-bearing aquifer, sometimes mixed with thin shale or limey layersColor: Light Brown/Tan
Hardness: Soft to Medium
130175 ftSandstone (deeper)Extended sandstone zone, may include more shale or remain thick-bedded, often tapped for high-yield wellsColor: Buff/Tan
Hardness: Medium