TY - RPRT TI - The National Flood Frequency Program, version 3 : a computer program for estimating magnitude and frequency of floods for ungaged sites AU - Kernell G. Ries AU - Michele Y. Crouse PY - 2002 DO - 10.3133/wri024168 UR - https://pubs.usgs.gov/publication/wri024168 ID - wri024168 ER -