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Fall Brings Fish Relief
It’s a good thing; the hot scorching weather is over. Michigan’s fish – especially northern pike- were not fairing so well in the unusually warm waters.

The Michigan Department of Natural Resources reported numerous fish kills from around the state with waters reaching nearly 90 degrees in the lower Shiawassee River, killing off some northern pike. Fish kills were also reported in Kent County’s Dean Lake, portions of the River Raisin in Monroe County, the Kawkawlin River in Bay County and the lower Kalamazoo River.

Chinook salmon and steelhead had struggled in display ponds at the DNR’s Wolf Lake Fish Hatchery in Mattawan. The hatchery lost so many fish during the peak of the season’s heat that some of the catch-and-release programs were canceled.

The heat and drought had tag-teamed to make conditions difficult for some fish to survive. Water gets too hot for some species to handle, particularly when water level is low or water flows slowly because of low rain levels. High water temperatures also can lower oxygen levels, particularly in areas where there are heavy weeds or vegetation.

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Greenwood Lake Commission Discusses Options for Aquatic Plant Maintenance - With the weed-harvesting season coming to an abrupt end, the GLC again vowed to investigate the trio of conventional weed remedies; harvesting, in effect mowing the weeds as they grow, using herbicides to kill the plants and aeration, a method that employs pumping oxygen into the water to help kill the weeds.

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