Yukon-Koyukuk County, Alaska — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Yukon-Koyukuk County, AK?
In Yukon-Koyukuk County, Alaska, public U.S. EPA records track 1 regulated facilities (#91 of 91 in Alaska), including 0 (0.0%) High-Risk sites and $0 in federal penalties. Countywide due diligence also covers 0 Safe Drinking Water (SDWIS) facilities, 1 Clean Water NPDES permits, 4 FEMA Federal Disaster Declarations (2 flood/storm), USDA Soil Foundation Shrink-Swell (LOW signal), and EPA Zone 3 — Low Potential (< 2.0 pCi/L).
Yukon-Koyukuk County, AK 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 Yukon-Koyukuk County, AK Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 05, 2026)Municipalities in Yukon-Koyukuk County
ZIP Codes in Yukon-Koyukuk County
Top EPA Regulated Facilities in Yukon-Koyukuk County, AK
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 |
|---|---|---|---|---|
| PLANO INNOKO RIVER MINE SITE FREE PREVIEW (LOW RISK) | OPHIR A-1, A-2, TAKOTNA, AK 99675 | LOW (12/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Yukon-Koyukuk County, Alaska Environmental Due Diligence
How many EPA-regulated environmental sites are in Yukon-Koyukuk County County, Alaska?
Public U.S. EPA records track 1 regulated facilities in Yukon-Koyukuk County County, Alaska (ranking #91 of 91 jurisdictions in AK). Of those, 0 (0.0%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 0 (0.0%) have active non-compliance quarters.
Which ZIP codes and cities in Yukon-Koyukuk County County have the highest regulated facility density?
Within Yukon-Koyukuk County County, the highest concentrations of EPA-tracked facilities are located in local postal sectors, spanning municipal corridors including Yukon-Koyukuk County.
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Yukon-Koyukuk County County?
Across Yukon-Koyukuk County County, 0 facilities (0.0% of regulated sites) are registered Resource Conservation and Recovery Act (RCRA) hazardous waste generators or handlers, and 0 industrial sites report toxic chemical releases to the EPA Toxics Release Inventory (TRI).
What is the EPA Radon Zone classification for Yukon-Koyukuk County County, AK?
Geologic indoor air screening places Yukon-Koyukuk County County in EPA Zone 3 — Low Potential (< 2.0 pCi/L). Counties in EPA Radon Zone 3 have a predicted average indoor radon level below 2.0 pCi/L, indicating lower regional geologic radon risk.
How many drinking water systems (SDWIS), impaired water bodies, and FEMA flood disasters are recorded in Yukon-Koyukuk County County, AK?
Federal records track 0 Safe Drinking Water (SDWIS) facilities, 1 Clean Water Act NPDES permits, and 0 impaired water dischargers in Yukon-Koyukuk County County, alongside 4 historical FEMA federal disaster declarations (2 flood/storm events).
Does Yukon-Koyukuk County, AK have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Yukon-Koyukuk County indicates a LOW shrink-swell risk signal and steel pipe corrosivity rated High. Run a street address scan to unlock the exact parcel soil series, LEP %, and water table depth.