Exceptional Aquatic Life Use waters

Exceptional Aquatic Life Use Waters are highly sensitive waters that can be degraded by a slight change in their environment. These include cold waters, where an increase in water temperature or sedimentation will have serious negative impacts and destroy unique habitats. These waters are not necessarily of high cultural, recreational, or scientific value like ORVWs, but are much more sensitive to change. Many of these waters are river or creek segments throughout Minnesota. Projects that may impact Exceptional Aquatic Life Use Waters, directly or indirectly, by impacting stream hydrology, connectivity, or chemistry require an Individual 401 Water Quality Certification review.

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