TY - RPRT TI - Statistical summaries of Michigan streamflow data, duration hydrographs and summaries of flow duration, low flow, high flow, and monthly and annual mean discharge through September 1967 AU - R. L. Knutilla PY - 1970 DO - 10.3133/ofr70189 UR - https://pubs.usgs.gov/publication/ofr70189 ID - ofr70189 ER -