An experimental addition of large woody debris (LWD) was conducted on three tributaries of the Jumbo River in the Ottawa National Forest, MI.  Twenty-five logs (0.4m x 2.4m) were added to a 100m treatment reach in each stream in May 2004.  Basic water quality and geomorphic measurements were taken monthly for 1 yr before and 3 yrs after the log addition.  Fish communities were sampled by backpack electrofishing reaches semi-annually (May and October) for 1 yr before and 2.5 yrs after the log addition.  All sampling was conducted in paired upstream control and downstream treatment reaches to detect changes in response to the log addition.  By 1 yr after the experimental addition, the logs altered stream geomorphology by creating distinct scour and deposition zones, redistributing substrate, and increasing the pool habitat in the treatment reaches.  Fish responses varied seasonally and among streams.  However, nearly 3 yrs after the wood addition, total fish density and biomass, as well as trout density and biomass, did not differ among control and treatment reaches.  Longer-term evaluations of the fish community are needed to determine if LWD plays an important structural role in Midwestern streams.