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Green Lake County, WI Contractor directory
Excavation contractors in Green Lake County, WI
9 verified excavating and site work contractors serving Green Lake County.
County excavation guide
Ground conditions and project requirements in Green Lake County
Use this local research to understand soil, seasonal constraints, permits, and jobsite logistics before choosing a contractor.
Skip to 9 contractorsSoil Regime ProfileEPA Ecoregion 52, 46 (Northern Glaciated Plains, Western Corn Belt Plains, North Central Hardwood Forests)
Wisconsin Glacial Till Plains & Kettle-Moraine Outwash
Dominant Soil Order: Alfisols / Mollisols / Spodosols
Parent Material: Wisconsinan Glacial Till (Silt Loam and Loam), Glacial Outwash Sand and Gravel, and Dolomite Ridge Bedrock
Wisconsin is glacial ground in every direction: till plains across the south and center, the kettle-moraine outwash belt, and dolomite ridges along the Lake Michigan shore. Digging is moderately easy: silt loam and loam till trenched with a standard backhoe, but the outwash corridors (the Fox Valley, the kettle moraine, the central sands) put clean sand and gravel in the subsoil that cuts fast and stands poorly, making shoring a standard bid item. Dolomite and Silurian limestone run shallow along the Door peninsula and the lake shore: bedrock within 50 inches on 20-60 percent of the lakeshore counties (Door, Kewaunee, Manitowoc, Sheboygan, Ozaukee), so rock excavation shows up in utility and foundation work. Hydric soils are moderate (18 percent average) with wet pockets along the Glacial Lake Wisconsin basin and the lowlands of the central sands, and shrink-swell is low (1 percent). Frost depth is 42 inches. Septic systems are conventional on most lots, with mound designs common in the sandy central counties where percolation runs too fast.
Geographic Footprint:Wisconsin's southern and central counties (Milwaukee, Madison, Green Bay, Appleton, the Fox Valley) are glacial till and outwash: diggable loams, sandy trench-stability issues in the moraine belts, shallow dolomite along the lakeshore, and a 42-inch frost line. Mound septic systems are common on the central sands.
Geotechnical Baseline
Physical Ground Conditions & Soil Properties
Shallow Bedrock (<50 in)
3.5%of county land area
Deep soil mantle; rock refusal rare for standard basement or trench cuts.
High Shrink-Swell Clay
0.0%expansive soil
Low volumetric expansion risk in native subgrade.
Median Water Table Depth
41inches from surface
Moderate depth; seasonal wet perched water tables possible in spring.
Hydric / Wetland Soils
29.8%hydric coverage
Indicates poor natural drainage and potential jurisdictional wetland pockets.
Steep Terrain (Slope >15%)
4.0%of terrain
Predominantly gentle to rolling slopes suitable for wheeled earthmoving.
Septic Severe Limitations
83.7%severe rate
High rate of conventional drainfield limitations; engineered or drip systems often required.
Dominant Soil Textures:Silt loamLoamy fine sandFine sandy loam
Surface Stones / Boulders: 22.4% coverage
Compliance & Permitting
Earthwork Regulations & Permit Thresholds
Stormwater & Erosion Control
WPDES Construction Site Stormwater General Permit WI-S067831-6 (NR 216); land disturbing activity of one acre or more; landowner files NOI
Administers NPDES stormwater discharge coverage for land-disturbing construction activities.
State Threshold:1.00 Acre
Local Threshold:Follows state
Onsite Wastewater & Utilities
Green Lake County Sanitary Permit (POWTS)
Jurisdiction over septic tank permits, soil evaluation perk tests, and drainfield sizing.
Housing on Septic:55.0%
Soil Evaluation:Plan review before sanitary permit; soil testing by certified soil tester or registered engineer; county retains test results
811 One-Call Requirements
Diggers Hotline
Mandatory notice window: 72 hours prior to mechanized earthwork (excluding weekends and legal holidays).
Licensing & Clearing Permits
Weather & Ecology
Seasonal Constraints & Clearing Windows
Frozen Ground Days
90days / year
Typical days with sub-freezing soil conditions affecting digging.
Wet Season Months
May, June, July
Peak precipitation window requiring sediment traps and soil aeration.
Supply Chain & Hazards
Logistics, Aggregate Sources & Geohazards
Aggregate & Material Supply
Barnekow Quarry
Nearest active quarry: 1.7 miles haul distance.(38 active crushed stone/sand operations within 50 miles).
Flood & Hazard Overlay
FEMA 100-Yr Flood:19.7%(100% NFHL digital map coverage)
NWI Wetlands:51.8%jurisdictional coverage
Karst Terrain & Sinkhole Risk: Low
33.2% of county underlain by soluble carbonate rock formations.
HUC8 Primary Watersheds:Upper Fox, Upper Rock
Public conservation land: 15.6% (USGS PAD-US).
Area-specific FAQ
Do I need to call before digging in Green Lake County?
Yes. You should contact Diggers Hotline (Wisconsin) at least 2 working days before any digging so underground lines can be marked.
How deep do footings need to be in Wisconsin?
In Wisconsin, footings typically need to extend below the frost line, which is around 60 inches here. A local contractor will confirm the code requirement for your site.
Verified local listings
Excavation contractors serving Green Lake County
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