The U.S. National Park Service has developed an Index of Community Integrity for the Buffalo National River (BRICI), Arkansas aquatic invertebrate community that is based on 10 individual metrics.  The BRICI has been successfully evaluated on mainstem segments of the river, but not on tributaries in the watershed.  The purpose of this study was to evaluate the BRICI on tributaries in the Buffalo River watershed, compare them to the Missouri Stream Community Index (SCI) that uses only four individual metrics, and determine which metric serves as the best predictor of community integrity in the watershed.  The BRICI and SCI were calculated from aquatic invertebrate data collected from 32 tributaries located throughout the watershed during a November to March index period using comparable quantitative methods.  Preliminary results show that both indices perform similarly suggesting that the simpler approach may be more applicable to tributaries of the Buffalo River.