1991 HABITAT EVALUATION RESULTS - BASELINE INFORMATION
T. F. Wilton
Iowa Department of Natural Resources
Water Quality Bureau
Wallace State Office Building
Des Moines, IA 50319
A baseline habitat evaluation was conducted the fall of 1991 as part of the Sny Magill Watershed Nonpoint Source Pollution Monitoring Project. Habitat evaluations were completed at six locations in the Sny Magill and two in the Bloody Run watersheds. Instream and streamside habitat variables were measured and observed at all eight locations. The U.S. EPA Rapid Bioassessment Protocols habitat model was used to determine a qualitative habitat ranking for each site. Some sites reported better habitat quality than others, yet none of the differences among the sites were great enough to account for more than slight differences in biological integrity. The aquatic habitat characteristics were compared using a simple ranking process and habitat similarity index. Some of the habitat similarity shared among sites appears to be related to drainage basin size and channel slope.