deer hunting unit · South Dakota Game, Fish and Parks
East River deer unit ERD-56A (Sanborn County)
South Dakota, United States
The map opens on this unit. Turn on Hunting units in Layers to see its boundary with public land, your pins and the forecast.
About East River deer unit ERD-56A (Sanborn County)
East River deer unit ERD-56A (Sanborn County) is a deer hunting unit in South Dakota, United States, set by South Dakota Game, Fish and Parks. It covers about 1,478 km² (571 mi²). No town of the HuntGrid list lies inside it; the nearest is Mitchell, about 14 km from its edge.
HuntGrid draws its boundary from South Dakota Game, Fish and Parks's data for the 2026 season. The agency uses this unit system for White-tailed deer and Mule deer.
- Unit code
- 56A
- Area
- 1,478 km²
- Area (miles)
- 571 mi²
- Boundaries
- 2026
Public and protected land mapped inside it
HuntGrid's public land layers map about 12 km² of public or protected land inside it, under 1% of the unit. Some protected land is privately owned (a conservation group's, for one). By manager, as the source names it:
| Manager | km² | Share |
|---|---|---|
| Unknown | 12 | under 1% |
| SANBORN COUNTY WATERFOWL PRODUCTION AREA | 0.4 | under 1% |
| Sanborn County Waterfowl Production Area | 0.4 | under 1% |
Boundaries are approximate and aren't legal descriptions. Public land doesn't always mean you can hunt there: check your local regulations and posted signs.
Public land: U.S. Geological Survey (USGS) Gap Analysis Project (GAP), 2025, Protected Areas Database of the United States (PAD-US) 4.1
Seasons and regulations
Season dates, bag limits and licences for East River deer unit ERD-56A (Sanborn County) are in South Dakota Game, Fish and Parks's official regulations. HuntGrid shows a season in the app only once a person has checked it against them.
Units around it
Next to it in the same unit system
- East River deer unit ERD-04A (Beadle County)
- East River deer unit ERD-08A (Davison County)
- East River deer unit ERD-10A (Aurora County)
- East River deer unit ERD-34A (Hanson County)
- East River deer unit ERD-40A (Jerauld County)
- East River deer unit ERD-42A (Kingsbury County)
- East River deer unit ERD-51A (Miner County)
Other hunting units that cover part of it
- Prairie turkey unit 56A (Sanborn) (turkey hunting unit)
- Archery deer unit ER1 (East River) (archery and muzzleloader deer unit)
- Prairie elk unit ERA (East River) (elk hunting unit)
- East River zone (bobcat zone)
- Low Plains middle zone (duck zone)
- Nonresident waterfowl unit NRW-00B
- Nonresident 3-day waterfowl unit NRW-00Z (private land only) (nonresident waterfowl unit)
- Sandhill crane open unit (sandhill crane unit)
- Prairie (outside the Fire Protection District) (mountain lion zone)
- Archery and muzzleloader deer unit ST1 (statewide except Custer State Park)
- Tundra swan unit TSW-00A
- Dark goose Unit 1 (goose hunting unit)
What HuntGrid shows for East River deer unit ERD-56A (Sanborn County)
- Its boundary on the map; tap inside it for the unit's card with the agency's regulations link.
- Public land and the other hunting units in the same view, each with its source.
- Season dates once a person has checked them, and legal shooting hours where the rule is checked.
- Hourly wind with a scent cone for every stand, and official weather alerts.
- Offline maps: download the area and use the map, your pins and the forecast with no signal.
Questions
How big is East River deer unit ERD-56A (Sanborn County) (deer hunting unit)?
About 1,478 km² (571 mi²), as HuntGrid maps South Dakota Game, Fish and Parks's boundary.
How much public or protected land is in East River deer unit ERD-56A (Sanborn County)?
HuntGrid's public land layers map about 12 km² of public or protected land, under 1% of the unit; the largest share is managed by Unknown. Public land doesn't always mean you can hunt there.
Where are the season dates for East River deer unit ERD-56A (Sanborn County)?
In South Dakota Game, Fish and Parks's official regulations: https://gfp.sd.gov/deer/
Which units are next to East River deer unit ERD-56A (Sanborn County)?
In the same unit system: East River deer unit ERD-04A (Beadle County), East River deer unit ERD-08A (Davison County), East River deer unit ERD-10A (Aurora County), East River deer unit ERD-34A (Hanson County), East River deer unit ERD-40A (Jerauld County), East River deer unit ERD-42A (Kingsbury County) and East River deer unit ERD-51A (Miner County).
More on huntgrid.net
Sources
Unit boundary: South Dakota Game, Fish and Parks (unit definitions); U.S. Census Bureau (county boundaries). Licence: Units defined in ARSD 41:06:21:02; county boundaries public domain (U.S. Census Bureau). Boundaries for the 2026 season.
HuntGrid isn't affiliated with South Dakota Game, Fish and Parks. The official regulations and maps have the final word.