Beaman Well & Pump LLC.
Rockford, IL61109
The typical geological profile for residential wells in the Argyle area consists of a surficial clay layer, underlain by alternating limestone/dolomite and sandstone strata, with common static water levels around 70–160 feet and most residential wells completed between 120 and 250 feet.
Showing contractors within 60 miles of Argyle. 40 results found.











A geological estimate for the Argyle area.
Typical Well Depth
Static Water Level
Recommended Method
Based on synthesis of the supplied well logs, the typical Argyle-area well geology begins with 7–12 feet of clay. This is followed by a substantial limestone or dolomite sequence (Galena/Platteville/Trenton) that generally extends down to ~90-190 feet. Below the main carbonate units, St. Peter or similar sandstones frequently occur, with some deeper wells encountering multiple limestone/sandstone transitions. Most residential wells target the upper limestone units but may extend into sandstone for increased capacity. Drilling methods are consistently rotary with mud circulation, with casing set through the bulk of unconsolidated and partially consolidated material. Water yields of 5–25 GPM are common at depths of ~120–250 feet.
| Depth (Feet) | Formation Type | Description | Characteristics |
|---|---|---|---|
| 0 – 10 ft | Clay | Surficial clay (often gray or with some gravel), low hardness, caving. | Color: Gray/Tan Hardness: Soft |
| 10 – 90 ft | Limestone/Dolomite | Interbedded limestones and dolomites (Galena/Platteville/Trenton); firm to hard, variable colors, often gray to buff. | Color: Gray, Buff Hardness: Medium-Hard |
| 90 – 140 ft | Limestone/Dolomite (Trenton or deeper carbonate) | Lower limestone and dolomite units, often harder and darker; minor shale partings possible. | Color: Gray/Bluish Hardness: Hard |
| 140 – 200 ft | Sandstone (St. Peter and equivalents) | Clean, fine to medium sandstones, commonly used as secondary aquifer, some layers may be loose or soft. | Color: Tan/White/Gray Hardness: Soft to medium |
| 200 – 245 ft | Interbedded Limestone/Sandstone | Alternating limestone and sandstone layers, variable thickness, found in deeper wells, may include minor shales. | Color: Buff/Bluish-Grey/Tan Hardness: Medium |