Pullman Well Drilling
PO Box 219, Wolsey, SD 57384
Phone: (605) 883-4532
Quote Available
Stretch's Well Service Inc
PO Box 36, Hitchcock, SD 57348
Phone: (605) 266-2128
Typical Wolsey-area wells penetrate black dirt, yellow clay, extensive blue/grey clay, and coarse gravel zones before encountering shale, with most residential wells completed in gravelly aquifers between 50-80 ft depth.
Showing contractors within 60 miles of Wolsey. 2 results found.
PO Box 219, Wolsey, SD 57384
Phone: (605) 883-4532
Quote Available
PO Box 36, Hitchcock, SD 57348
Phone: (605) 266-2128
A geological estimate for the Wolsey area.
Typical Well Depth
Static Water Level
Recommended Method
Representative geologic profiles for the Wolsey, SD region show a consistent sequence: A thin surficial topsoil/black dirt layer overlies a substantial yellow clay, followed by a thick blue or grey clay. Important aquifer zones are found in coarse gravel between 40–80 ft, often mixed with blue/grey clay, before reaching an underlying shale layer. Wells for residential use typically target the gravelly interval for optimal yields (5–15+ GPM) at depths near 60–80 ft. Municipal, high-capacity, or historic irrigation wells extend past 700 ft and up to 1000 ft, remaining largely in clay but accessing thicker coarser zones at depth when present. Rotary mud drilling and steel casing are standard, with cement grout used to seal from surface to total depth.
| Depth (Feet) | Formation Type | Description | Characteristics |
|---|---|---|---|
| 0 – 3 ft | Topsoil / Black Dirt | Surface organic layer, dark color. | Color: Black Hardness: Soft |
| 3 – 20 ft | Yellow Clay | Plastic yellowish clay, some sandy intervals. | Color: Yellow Hardness: Medium |
| 20 – 40 ft | Blue/Grey Clay | Firm fine clay, occasional mottling, low permeability. | Color: Blue-Grey Hardness: Medium |
| 40 – 65 ft | Gravel with Blue/Grey Clay | Water-bearing coarse gravel and sand, trace blue/grey clay; main aquifer zone for most wells. | Color: Grey/Blue Hardness: Loose (gravel), Firm (clay) |
| 65 – 73 ft | Blue/Grey Clay & Shale | Increasingly firm clay grading into shale; significant decrease in permeability. | Color: Grey to blue Hardness: Firm to hard |
| 73 – 180 ft | Grey Clay/Shale | Thick, dense, low-yielding horizon; not normally targeted for water supply. | Color: Grey Hardness: Hard |
| 180 – 1000 ft | Interbedded Clays, Minor Gravels | Deeper units are variable but dominantly clay, with occasional gravel or sand streaks; rarely used except in high-capacity wells. | Color: Grey/yellow/blue Hardness: Variable |