Gann Valley, South Dakota — Property Hazard, Flood Zone, Soil, Water & Market Guide
What Are the Major Property, Flood, Soil & Environmental Risks in Gann Valley, SD?
Public U.S. EPA records track 3 regulated facilities in Gann Valley, South Dakota (Buffalo County), including 0 High-Risk sites (0.0%) and 0 active violators. In addition to industrial waste, Gann Valley properties are screened for Tap Water & Watershed Permits (2 systems), USDA Soil Foundation Shrink-Swell (MODERATE signal), 2 County FEMA Disaster Declarations, and EPA Zone 1 — High Potential (> 4.0 pCi/L).
Gann Valley, SD 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 Gann Valley, SD Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 03, 2026)ZIP Codes in Gann Valley, SD
Highest-Scored EPA Regulated Facilities in Gann Valley, SD
100% of High-Risk & penalized facilities have facility names, street names, and dockets redacted (3 Low-Risk compliant records shown as Free Previews).
| Facility Name / Hazard Type | Sector Location (Street Redacted) | Risk Tier & Score | Compliance Status | Enforcement / Unlock |
|---|---|---|---|---|
| BUFFALO COUNTY HIGHWAY SHOP FREE PREVIEW (LOW RISK) | E. MOUTTON AVE., GANN VALLEY, SD 57341 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
| 0021(150), PCN 041E CULVERT REPLACEMENT HWY 34 BUFFALO COUNTY FREE PREVIEW (LOW RISK) | HWY 34 BUFFALO COUNTY NEAR GANN VALLEY, GANN VALLEY, SD 57341 | LOW (13/100) | No Violation Identified (0 qtrs NC) | $0 |
| P 0045(58)66 BRULE/BUFFALO COUNTY FREE PREVIEW (LOW RISK) | SD 45 (22 MILES S OF SD45/221ST STREET JUNCTION TH, GANN VALLEY, SD 57341 | LOW (12/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Gann Valley, South Dakota Environmental Risk & Radon
How many EPA-regulated facilities are in Gann Valley, SD?
U.S. EPA records track 3 regulated facilities in Gann Valley, South Dakota, including 0 high-risk sites (0.0%), 0 active violators (0.0%), and 1 RCRA hazardous waste handlers (33.3%).
Which ZIP codes in Gann Valley, SD have the most EPA-tracked sites?
Within Gann Valley, regulated facilities are primarily concentrated across ZIP 57341 (3 sites).
How can I check a specific house or commercial property in Gann Valley, SD?
Enter the exact street address in Gann Valley into the FullPropertyReport radius scanner to screen all EPA ECHO, FRS, RCRA, TRI, USDA soil foundation shrink-swell, drinking water (SDWIS), FEMA flood zone, and county radon records within 0.5 to 3.0 miles.
Is tap water safe in Gann Valley, SD and how many EPA water permits exist?
In Gann Valley, SD, federal registries track 0 Safe Drinking Water (SDWIS) facilities, 2 Clean Water Act NPDES permits, and 0 impaired water body dischargers.
What is the soil foundation risk and FEMA flood disaster history in Gann Valley, SD?
USDA regional soil screening for Gann Valley indicates a MODERATE shrink-swell foundation signal, and Buffalo County has recorded 2 federal FEMA disaster declarations (2 flood/severe storm declarations). Run an address scan to unlock exact parcel soil LEP %, water table depth, and flood zone.