Help Clean Up the Big Sioux River
Volunteer as a Water Quality Tester. This growing season volunteers will again do water quality testing throughout the Big Sioux watershed. From Brookings to Sioux City, volunteers are needed to test the Big Sioux River and its tributaries for e-coli, sediment, nitrates, phosphorus, oxygen content, and pH. Tests are done every two weeks and results are monitored by the DENR. Training and material are provided.