Chat with us, powered by LiveChat

Well Drillers Near Sioux Falls, South Dakota

Typical Sioux Falls wells encounter a surface fill layer, silty sand/clay lenses, and a main water-bearing sand/gravel aquifer, usually completed around 15-22 ft below ground.

Showing contractors within 60 miles of Sioux Falls. 8 results found.

← Browse all South Dakota contractors
View Local Geology Report ▼

A geological estimate for the Sioux Falls area.

22 ft

Typical Well Depth

10 ft

Static Water Level

Rotary - Mud Circulation

Recommended Method

Detailed Summary

The majority of water well logs from Sioux Falls show a consistent near-surface layer of fill (often silty sand or clay, sometimes with minor gravel), followed by a zone of interbedded silty sand and clay or glacial outwash (SM/CL), typically grading into a thicker, coarser, well-sorted sand or sand/gravel layer below about 9-13 ft. This basal aquifer (coarse sand or sand/gravel) is unconfined, water-bearing, and most residential or monitoring wells are set at 15 to 22 ft. Static water levels typically range from 6 to 15 ft below surface. One-off occurrences of bedrock or deeper gravels are rare within the urban area and not considered representative. Residential wells seeking 5-15+ GPM typically target the coarse sand/gravel aquifer at 18-22 ft.

Expected Geological Layers

Depth (Feet)Formation TypeDescriptionCharacteristics
0 – 2 ftFILLMostly silty sand or silty clay; dark brown or black; some sites report gravel or asphalt cap; urban fill.Color: Brown or black
Hardness: Soft
2 – 5 ftFILL to CLAYEY SAND / SILTY CLAY LENSFine to medium silty sand and/or silty clay, variably mottled; alluvial or glacial in origin.Color: Brown, dark brown, gray
Hardness: Soft to medium
5 – 10 ftGLACIAL OUTWASH / SILTY SANDSilty, medium to coarse sand with occasional clay or gravel lenses. Partially water bearing at base.Color: Light gray, tan, brown
Hardness: Medium
10 – 17 ftCOARSE SAND/GRAVEL AQUIFERMedium to coarse sand, some gravel, often moist to wet, main water-bearing zone; can extend to 22 ft.Color: Gray brown to tan
Hardness: Loose to moderately firm
17 – 22 ftSAND AND GRAVEL (AQUIFER BASE)Coarse sand and gravel, saturated, high permeability, principal aquifer for wells in this area.Color: Gray, tan, or brown
Hardness: Loose