A statewide study was performed to develop regional regression equations for estimating selected annual exceedance-probability statistics for ungaged stream sites in Iowa. The study area comprises streamgages located within Iowa and 50 miles beyond the St
Eash, David A. daeash@usgs.gov,Barnes, Kimberlee K.,Veilleux, Andrea G. aveilleux@usgs.gov. Methods for estimating annual exceedance-probability discharges for streams in Iowa, based on data through water year 2010. 2013-01-01.