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River Watch

Minnesota Pollution Control Agency U-Tube Videos

DNR/PCA Cooperative Stream Gaging Website:

Sampling with a rod:

Friends of the Minnesota Valley

Secchi tube video:

Sampling with the Van Dorn:

Repairing and Maintaining a Van Dorn sampler:

Sampling by wading:

Taking a tapedown:

​​​Friends of the Minnesota Valley

Post Office Box 20697 Bloomington, MN 55420