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Winston County, MS Contractor directory
Excavation contractors in Winston County, MS
2 verified excavating and site work contractors serving Winston County.
County excavation guide
Ground conditions and project requirements in Winston County
Use this local research to understand soil, seasonal constraints, permits, and jobsite logistics before choosing a contractor.
Skip to 2 contractorsSoil Regime ProfileEPA Ecoregion 73, 74, 65 (Mississippi Alluvial Plain, Mississippi Valley Loess Plains, Southeastern Plains)
Mississippi Yazoo Alluvium, Black Prairie & Pine Hills
Dominant Soil Order: Vertisols / Alfisols / Ultisols / Inceptisols
Parent Material: Mississippi River Alluvial Clay and Silt (Yazoo Delta), Calcareous Black Prairie Smectite Clay, and Gulf Coastal Plain Sandy and Clayey Sediments
Mississippi is the wet-clay end of the Deep South. The Yazoo Delta (the Delta counties from Memphis to Vicksburg) is Mississippi River alluvium: deep silty clay and clay that digs easily when dry and turns to genuine gumbo when wet, hydric soils on 40-60 percent of land, water tables within inches of grade in spring, and the strongest shrink-swell in the region (smectite clays that crack deeply in summer drought). Utility work here is a seasonal race, and septic systems are commonly engineered (aerobic units, low-pressure dosing) because conventional trenches fail in the alluvial clay. The Black Prairie belt (Columbus, Starkville, Aberdeen) carries calcareous smectite clay over Selma Group chalk: high shrink-swell again, with shallow chalk bedrock in places. The Pine Hills and Red Hills (Jackson, Hattiesburg south and east) are the easy half: sandy loam and sandy clay over Gulf Coastal Plain sediments, low shrink-swell, gentle slopes, and conventional septic systems standard. Loess bluffs line the Delta's eastern edge. Frost is essentially absent; hurricane rainfall loads drive drainage design.
Geographic Footprint:Mississippi's counties (Jackson, Gulfport, Hattiesburg, Tupelo, the Delta) split between alluvial gumbo (the Delta and Black Prairie: seasonal wet, high shrink-swell, engineered septic) and the sandy Pine Hills (easy digging, conventional systems). Water management is the trade's constant.
Geotechnical Baseline
Physical Ground Conditions & Soil Properties
Shallow Bedrock (<50 in)
14.0%of county land area
Deep soil mantle; rock refusal rare for standard basement or trench cuts.
High Shrink-Swell Clay
2.4%expansive soil
Low volumetric expansion risk in native subgrade.
Median Water Table Depth
20inches from surface
Shallow water table; active dewatering or sumps needed for deep trenching.
Hydric / Wetland Soils
12.0%hydric coverage
Indicates poor natural drainage and potential jurisdictional wetland pockets.
Steep Terrain (Slope >15%)
23.1%of terrain
Mountain/hilly terrain; terracing, benching, and tracked haulers frequent.
Septic Severe Limitations
94.2%severe rate
High rate of conventional drainfield limitations; engineered or drip systems often required.
Dominant Soil Textures:Fine sandy loamLoamSilt loam
Surface Stones / Boulders: 6.1% coverage
Compliance & Permitting
Earthwork Regulations & Permit Thresholds
Stormwater & Erosion Control
MDEQ Large Construction Storm Water General Permit (MSR10), reissued Feb 4 2022, expires Jan 31 2027; 5 acres or more (or part of larger plan of 5 acres or more). Sites of 1 to under 5 acres fall under the separate MDEQ Small Construction General Permit (permit number not verified).
Administers NPDES stormwater discharge coverage for land-disturbing construction activities.
State Threshold:1.00 Acre
Local Threshold:Follows state
Onsite Wastewater & Utilities
Mississippi State Department of Health
Jurisdiction over septic tank permits, soil evaluation perk tests, and drainfield sizing.
Housing on Septic:55.0%
Soil Evaluation:Soil and site evaluation (soil auger to 5 ft, "perk test") before permit recommendation; permit valid 2 years
811 One-Call Requirements
Mississippi 811
Mandatory notice window: 48 hours prior to mechanized earthwork (excluding weekends and legal holidays).
Licensing & Clearing Permits
Weather & Ecology
Seasonal Constraints & Clearing Windows
Frozen Ground Days
0days / year
Typical days with sub-freezing soil conditions affecting digging.
Supply Chain & Hazards
Logistics, Aggregate Sources & Geohazards
Aggregate & Material Supply
Artesia Quarry
Nearest active quarry: 32.5 miles haul distance.(4 active crushed stone/sand operations within 50 miles).
Flood & Hazard Overlay
FEMA 100-Yr Flood:13.9%(100% NFHL digital map coverage)
NWI Wetlands:19.3%jurisdictional coverage
Karst Terrain & Sinkhole Risk: Low
15.2% of county underlain by soluble carbonate rock formations.
HUC8 Primary Watersheds:Upper Pearl, Noxubee
Public conservation land: 24.9% (USGS PAD-US).
Area-specific FAQ
Do I need to call before digging in Winston County?
Yes. You should contact Mississippi 811 at least 2 working days before any digging so underground lines can be marked.
Verified local listings
Excavation contractors serving Winston County
2 verified listings
