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Secchi disk being used to measure lake transparency.

The Trophic State Index

The Trophic State Index is a means for lake professionals and volunteers alike to numerically measure the productivity of a natural lake or man-made reservoir. Learn how it's used in South Dakota to survey the condition of our water resources.

Storm water rushing down a street gutter.

South Dakota Water and Community Symposium to be Held July 26

July 22, 2022

SDSU Extension will host a one-day South Dakota Water and Community Symposium on Tuesday, July 26 from 9:30 a.m. – 2:30 p.m. CDT at the Raven Precision Agriculture Center on the South Dakota State University campus in Brookings.

Rain gauge on a fence post along a well-managed rangeland area.

Five Range Management Principles: #5 Climate Ready

Understanding your ranching system is critical, and identifying anticipated soil-plant-animal responses during periods of dry, wet, or normal conditions will enable you to develop climate-ready practices. Learn how to get started today!

Leaves clogging stormwater drain.

Urban Stormwater Systems and Leaf Litter

Leaf litter can be a significant source of organic debris to urban stormwater systems during fall rain, which can mean nutrient spikes in the receiving bodies of water. Learn some expert tips for managing leaf litter this fall.

Color-coded map of South Dakota indicating the fiftieth percentile, for first fall occurrence of 32 degrees Fahrenheit. For assistance reading this graphic and data set, please call SDSU Extension at 605-688-4792.

First Fall Frost Dates

The first fall frost often marks the end of the growing season, and many garden plants may not survive the freezing temperatures. Learn about some available tools we can use to predict the first fall frost dates around the state.

Color-coded map of the United States showing October 2022 temperature outlook. Temperatures in South Dakota are leaning above average. For assistance reading this graphic and data set, please call SDSU Extension at 605-688-4792.

2022 Fall and Early Winter Climate Outlook

The warmth of September is likely to continue into October with odds leaning towards drier than average conditions according to the latest climate outlook released on September 15, 2022.

Eastern South Dakota Water Conference participants.

Registration Open for the 2022 Eastern South Dakota Water Conference

September 21, 2022

Registration is open for the 2022 Eastern South Dakota Water Conference to be held on Wednesday, Oct. 12, at the McCrory Gardens Education and Visitor Center in Brookings, South Dakota.

Lake water with intense algae bloom throughout.

Liebig’s Law of the Minimum and Phosphorus in South Dakota Surface Waters

Too much phosphorus in water can lead to increased growth of aquatic plants, algae blooms and fish kills. Learn about some recent research investigating the impact of phosphorus runoff on South Dakota's water resources.

Two white, newborn lambs under a red heat lamp in a barn.

Sheep Facilities and Moisture

Fact sheet for keeping a barn comfortable and dry to increase lamb survival.

Interior of a licensed commercial kitchen.

South Dakota Licensed Kitchen Process

Interested in selling food products in a retail establishments? Licensed kitchens are the place to start. Learn the steps for building a licensed kitchen in South Dakota along with rules, regulations and guidelines for processing foods in existing licensed kitchens.