New: 2026 preseason crop forecast estimated

Every agricultural field in Sully County, South Dakota now has a calibrated 2026 crop probability — corn, soybean, wheat, cotton, rice, and 16 other classes. Backtest accuracy: F1 ≈ 0.76 corn, ≈ 0.79 soy. View 2026 forecast on the map →

Top Crops (2025)

Grassland/Pasture

27.8%

Corn

18.7%

Open_Water

10.4%

Sunflower

9.2%

Spring_Wheat

9.1%

Soybeans

9.0%

Winter_Wheat

7.2%

Herbaceous_Wetlands

1.6%

Developed/Open_Space

1.5%

Sorghum

1.2%

Dominant Crop by Year

2008: Grassland/Pasture

33.3%

2009: Grassland/Pasture

32.3%

2010: Grassland/Pasture

31.2%

2011: Grassland/Pasture

32.4%

2012: Grassland/Pasture

31.9%

2013: Grassland/Pasture

34.6%

2014: Grassland/Pasture

30.9%

2015: Grassland/Pasture

29.0%

2016: Grassland/Pasture

28.6%

2017: Grassland/Pasture

28.6%

2018: Grassland/Pasture

27.9%

2019: Grassland/Pasture

27.2%

2020: Grassland/Pasture

27.0%

2021: Grassland/Pasture

26.6%

2022: Grassland/Pasture

27.0%

2023: Grassland/Pasture

26.4%

2024: Grassland/Pasture

31.8%

2025: Grassland/Pasture

27.8%

Crop History for Sully County, South Dakota

New: 2026 preseason crop forecast estimated

Top Crops (2025)

Dominant Crop by Year