Environment Counts | 49.6% of stream miles in Minnesota have been altered by humans :

Published by on Tuesday, January 24th, 2017

Published
by geoff
on 2013-11-27

Over the past two years the Minnesota Pollution Control Agency (MPCA)and the Minnesota Geospatial Information Office (MNGeo) have visually reviewed stream channels in Minnesota using aerial imagery from the previous 30 years, historical aerial imagery dating back to the 1930s, very recent LiDAR imagery and MPCA biological monitoring photographs.

Minnesota stream bed historical photo

Minnesota stream bed modern LiDAR

The analysis found that 49.6% of stream miles in Minnesota have been altered by humans. The results also represent the first comprehensive baseline of stream channel conditions in the state of Minnesota. Minnesota Statewide Altered Watercourse Project

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