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Swarm of mosquitoes.

West Nile Virus Update: October 16, 2025

As of October 16, 2025, the South Dakota Department of Health reported 86 human cases of West Nile virus from Aurora, Beadle, Bon Homme, Brookings, Brown, Charles Mix, Clay, Codington, Corson, Douglas, Grant, Gregory, Haakon, Hamlin, Hand, Hughes, Hutchison, Hyde, Lawrence, Lincoln, Marshall, Meade, Miner, Minnehaha, Pennington, Roberts, Sanborn, Spink, Stanley, Todd, Union, Walworth, and Yankton counties.

Professional portrait of Ryan Lefers

SDSU Extension welcomes new water specialist

October 29, 2025

South Dakota State University Extension is pleased to welcome Ryan Lefers as the new Griffith Endowed Chair in Agriculture and Water Resources, South Dakota Water Resources Institute Director and SDSU Extension Water Management Specialist.

Cattle grazing in a rangeland area. Three magnifying images show close-up photos of native pollinators visiting forbs growing in the same area.

Rangeland Wildflowers: Their Value to Livestock and Pollinators

Native wildflowers and shrubs are critical to providing a wide array of services that increase the resiliency of rangelands, provide pollinator habitat, and contribute to livestock nutrition.

Gloved hands examining a musk thistle seedhead.

Now is the Time to Plan for Noxious Weed Control in 2026

Most of South Dakota experienced first frosts that were delayed by at least one month, allowing for noxious weed growth to continue later in the season. Now is the time to plan for noxious weed management tactics.

a brown bird eating seed from a dried sunflower head.

Native Plants for Bird Habitat in South Dakota

South Dakota has a range of habitats that support many bird species, and native plants play an important role in all those habitats.

Team of natural resource management researchers and professionals standing in a stream.

Finding Technical and Financial Assistance for Fish Barrier Removal and Mitigation

Manmade barriers can limit the movement of many aquatic species and prevent them from gaining access to critical habitats. For public entities and private individuals interested in the removal or mitigation of those barriers, both technical and financial assistance is available.

an image of outdoor weather monitoring equipment in a field

Climate and Weather

View resources to predict, prepare and recover from weather-related events year-round, including the latest drought and flood information.

Vast, rolling rangeland near the Black Hills of South Dakota.

Pasture

Pastures and rangelands are a valuable resource for owners of equine and livestock.

man holding a small pile of soil in his hands

Transitioning to Soil Health Systems in Eastern South Dakota Intended for beginners: Where do I start?

Fact sheet for beginners on where to start transitioning to soil health systems in eastern South Dakota.

sun rising over South Dakota field

Agriculture

Both livestock and crops are essential to South Dakota's agricultural industry.