----------------------------Original message---------------------------- How do you define largest? Largest volumetric flow? Longest length? Greatest watershed area? ********************************************** Philip P. Rufe, Cartographer USGS - MCMC Mail Stop 706 1400 Independence Rd Rolla Missouri 65401 (573) 308 - 3540 / (573) 308 - 3652 fax [log in to unmask] ***********************************************