Manistee River

Water type: River
Continent: North America
Climate: Continental

Largest tributaries

Manistee Lake (Michigan)

The Manistee River, seldom referred to as the Big Manistee River, runs 190 miles (310 km) through the northwestern Lower Peninsula of Michigan; it now passes through the contemporary villages of Sharon, Smithville, and Mesick, entering Lake Michigan at Manistee.

It is considered, like the nearby Au Sable River, to be one of the best trout fisheries east of the Rockies.

The Manistee River is also being considered for restoration of Arctic grayling, which have been extirpated from the State of Michigan since 1936.

Native fluvial fish species in the Manistee River include brook trout (Salvelinus fontinalis) and the now extinct Arctic grayling (Thymallus arcticus). The Manistee River has undergone considerable physical and biological alterations over the past century. In addition to extensive past logging in the region, two hydroelectric dams act as barriers to migration. Native species also suffer from competition or predation by non-native introduced salmonids including brown trout (Salmo trutta), steelhead/rainbow trout (Oncorhynchus mykiss), coho salmon (Oncorhynchus kisutch), and Chinook salmon (Oncorhynchus tshawytscha).

An interest in reestablishing Arctic grayling in the river by the Little River Band of Ottawa Indians led to a recent analysis of habitat suitability for Arctic grayling in Big Manistee River tributaries and some regions of the main stem was conducted from 2011 to 2013. Abiotic habitat conditions such as temperature, gravel, and water quality were found suitable for re-introduction of grayling, once the dominant salmonid in the State of Michigan.

Another study of found that tributaries with low densities of non-native brown trout may be ideal for Arctic grayling re-introduction, since two fish species (brook trout and slimy sculpin (Cottus cognatus) that currently and historically occurred with grayling were found in lower numbers when predatory brown trout were present.

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