Prairie Coteau Watershed Improvement & Protection Project


Click below for lake levels and flooding information:




SD Dept. of Agriculture and Natural Resources New and Historical Lake Levels



 Mission Statement

The goal of the Prairie Coteau Watershed

 Improvement and Protection
 Project is to improve and
protect the water quality
 of northeast South Dakota
 lakes and streams.



New name new project!  The Prairie Coteau Watershed Project is a combination of the former Northeast Glacial Lakes and Upper Big Sioux River Watershed Projects. The new project will continue to protect and improve the water quality of northeast South Dakota lakes,  reservoirs, streams and rivers.  This web site will provide information to agricultural landowners and producers on cost share programs available to implement best management practices designed to improve water quality, livestock and cropland production plus a wealth of information useful for lakeshore property owners, recreational users and the general public.


New to the Site! 

Pickerel Lake Water Quality Report

(click to view or download report)

Enemy Swim Water Quality Report

(click to view or download report)

Lake Elevation Data

2021 Blue Dog Lake Graph

2021 Bitter Lake/Waubay Lake Graph

Updated Lake Level Fact Sheets

Upcoming Events

April 13, 2024
Clean Up in the Hollow Event
Sica Hollow State Park
44950 Park Road Sisseton SD 57262
Pickers, gloves and bags will be provided. Please dress appropriately for walking along trails and roads. After clean up s'mores, hot dogs and prizes!
In case of inclement weather, even will take place following weekend

April 20, 2024
Watertown Earth Day Clean-Up Event?
Registration: 9:30-10:00 AM
Event: 10:00 AM - Noon
More Info Below
Sponsored by Friends of the Big Sioux River and the
 Day County Conservation District