North Fork Crow River Watershed Restoration & Protection Project

South Fork Crow River Watershed Restoration & Protection Project

Historic data (pre - 2007) and monitoring in 2007 - 2010 was used to identify stream reaches that lacked healthy fish and macroinvertebrate assemblages. Fish and macroinvertebrate data was collected at 57 biological monitoring stations (outlets of sub-watershed) and were assessed independently; meaning a stream reach could be impaired for one or both of these biological indicators. Sampling locations included the mouth of the North Fork Crow River where it joins the South Fork Crow River, the Crow River where it joins the Mississippi River, outlet of the major tributaries and outlet of smaller headwater tributaries. The MPCA also completed stream water chemistry sampling on 16 sites located on the outlet of sixteen of nineteen major subwatersheds, and lake water quality sampling focusing on lakes greater than 100 acres in size. Where data was available, 82 stream reaches and 69 lakes were assessed. (Not all lake and stream assessment unit IDs (AUIDs) were able to be assessed due to insufficient data, modified channel condition or their status as limited resources waters.) From this effort 17 stream reaches were listed as impaired for aquatic life, 15 for aquatic recreation, and 41 lakes for aquatic recreation. These streams and lakes are listed based off the water use being a class 2 beneficial use classification.

In 2010 CROW, Middle Fork/North Fork Watershed Districts completed a longitudinal (synoptic) DO survey to collected dissolved oxygen data on 80 sites, three different sampling runs. This survey was conducted during the late afternoon/evening and early morning hours to represent the daily peak of the diurnal DO swing (peak at night, trough in morning). The data was collected to evaluate dissolved oxygen as a potential stressor to aquatic life.

Currently
In 2011 - 2012, the CROW is working closely with the Middle Fork and North Crow River Watershed Districts, Meeker and Wright SWCDs, and DNR to begin the civic engagement process. Two reports have been completed for this project and are currently under review. The Biological Report summarizes the results of the biological data. The Stressor ID Report summarizes key causes or stressors contributing to impaired fish and aquatic macroinvertebrate communities.

 

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