The motivation for writing U.S. Geological Survey Open-File Report 85-95 was to (1) show that the linear regression approach of transferring low-flow statistics (e.g., 7-day, 10-year low flow) from an index station to a partialrecord site was biased and (2) propose an alternative unbiased estimator. Most analysts who use a mathematical technique, use linear regression analysis to relate base-fl...