
Sam's Well Drilling
Randolph, WI53956
Typical Dousman-area wells penetrate a sequence of unconsolidated sand, gravel, hardpan or clay, and then limestone bedrock. Most residential wells reach depths between 120 and 190 feet for reliable yield (5–25+ GPM), with some extended to 300+ feet for high capacity or greater assurance.
Showing contractors within 60 miles of Dousman. 54 results found.














A geological estimate for the Dousman area.
Typical Well Depth
Static Water Level
Recommended Method
A synthesis of well logs from Dousman and surrounding areas indicates a representative subsurface profile begins with sandy, gravelly glacial deposits, often mixed with clay and occasional hardpan, spanning approximately the first 20 to 80 feet. This is occasionally underlain by additional sandy or silty clay, gravel, or hardpan layers extending to about 120–190 feet, depending on the local topography and glacial history. Most wells then encounter competent limestone (dolomite), which serves as the primary regional aquifer and is often the main water-bearing formation. In rare cases (especially for deeper/higher capacity wells), underlying shale may be encountered below the limestone. Static water levels are most commonly found between 10 and 80 feet below surface. Standard construction involves rotary drilling with steel casing set through the unconsolidated materials and into the upper bedrock, and grout (cement or bentonite) sealing to at least the base of the casing.
| Depth (Feet) | Formation Type | Description | Characteristics |
|---|---|---|---|
| 0 – 5 ft | Topsoil / Soil w/ Stones | Silty, organic, possible stones, brown to black | Color: Black/Brown Hardness: Loose |
| 5 – 40 ft | Sand/Gravel/Clay (Glacial Drift) | Predominantly sand and gravel, some clay or mixed zones, may include silty/clayey intervals or small rock fragments, minor hardpan locally | Color: Brown/Gray/Yellow Hardness: Soft to medium |
| 40 – 100 ft | Sandy Clay / Hardpan / Gravel | Firm clay with sand/gravel inclusions; hardpan (dense, possibly cemented till); locally sandy zones | Color: Brown/Gray/Yellow Hardness: Medium to very hard (hardpan) |
| 100 – 160 ft | Hardpan / Sandy Clay / Occasional gravel | Dense silty or sandy clay, some buried gravel beds, some logs report hardpan or fine sand transitions | Color: Gray/Brown Hardness: Firm to hard |
| 160 – 200 ft | Limestone (Dolomite) | Competent, fractured, strong regional aquifer; sometimes with thin shale beds or solution features | Color: Gray/White Hardness: Hard |
| 200 – 350 ft | Limestone (occasional shale interbeds below 210 ft) | Further competent bedrock, possible minor shale near base | Color: Gray Hardness: Very Hard |
| 350 – 400 ft | Shale (if present, only in deepest wells) | Firm, dense, acts as lower aquitard; not always reached in standard residential wells | Color: Gray Hardness: Firm |