2026 Dewey County, South Dakota Wildfires
Newest wildfires in Dewey County
Largest wildfires in Dewey County this season
All 2026 Dewey County Fires · 10 fires
A fire is listed here when it is located in Dewey County. Each complex is counted once, through its parent: the parent carries the complex's acres, and its member fires are listed beneath it without being counted again. A fire that crossed a county line is listed with the acres that burned in Dewey County, not its whole reported size. A fire located elsewhere that burned into Dewey County is listed too, at its Dewey County acres, and is not added to the Dewey County fire counts. County lines come from a different boundary dataset than state lines, so Dewey County's acres are counted along county lines and can differ a little at the edges from the figures on the state page.
| Fire | Start date | Containment | Status | Acres | Center | Ignition point |
|---|---|---|---|---|---|---|
| Moreau River Fire | Mar 12, 2026 | 100% | Inactive | 991 | 45.1669, -101.2126 | — |
| Route 2 Fire | Aug 25, 2026 | — | Inactive | 270 | 45.2449, -100.9443 | — |
| New H Fire | Jul 15, 2026 | — | Inactive | 77 | 45.4319, -100.9106 | — |
| Green Grass Creek Fire | Aug 23, 2026 | — | Inactive | 40 | 45.1577, -101.2501 | — |
| Far East Ridge Fire | Apr 23, 2026 | — | Inactive | 34 | 45.1056, -100.6972 | — |
| East 212 Fire | Jan 7, 2026 | — | Inactive | 32 | 45.1380, -100.6180 | — |
| Blizzard Fire | Mar 6, 2026 | — | Inactive | 1 | 44.9070, -100.4820 | — |
| Route 7 Fire | Mar 24, 2026 | — | Inactive | 0 | 45.1085, -100.4050 | — |
| B Lake Rd Fire | Mar 10, 2026 | — | Inactive | 0 | 45.0200, -101.2190 | — |
| Artillery Fire | Feb 12, 2026 | — | Inactive | 0 | 45.0050, -101.2270 | — |
| Totals | 2026 Season Fires 10 | Active Fires 0 | Acres Burning 0 | 2026 Season Acres 1,445 |
Land cover · Dewey County 2026
Burned acres in Dewey County for the 2026 season, split by the kind of land that burned. Each figure counts the LANDFIRE 30 m cells inside a fire's latest mapped perimeter. The Fires tab carries the reported season acreage.
Forest ownership · Dewey County 2026
Burned forest acres in Dewey County for the 2026 season, split by who owns the land. Owners are mapped for forestland, so every figure here counts burned cells whose LANDFIRE lifeform is Tree. The Fires tab carries the season acreage this site reports.
Burn severity · Dewey County 2026
Burned acres in Dewey County for the 2026 season, split by how severely each cell of ground burned. Each figure counts the 30 m cells inside a fire's latest mapped perimeter, measured from satellite imagery. The Fires tab carries the reported season acreage.
Severity comes from the differenced normalized burn ratio (dNBR), the same index the federal burn severity programs publish, classified with the standard thresholds.
This is an initial assessment. Trees keep dying for months after a burn, so severity in forest reads conservative until the official assessments arrive after the season.