Padraic S O'Shea
Padraic is a statistician at the Iowa City office of the Central Midwest Water Science Center. Since joining the USGS in February, 2014, he has been involved with a broad range of work. Presently, his research focuses on methods for estimating annual exceedance-probability discharges and selected low-flow frequency statistics.
Biography
Education:
2015 B.S. Statistics, University of Iowa
2010 B.A. Marketing, University of Iowa
Science and Products
Stream-channel and watershed delineations and basin-characteristic measurements using lidar elevation data for small drainage basins within the Des Moines Lobe landform region in Iowa
Basin-characteristic measurements related to stream length, stream slope, stream density, and stream order have been identified as significant variables for estimation of flood, flow-duration, and low-flow discharges in Iowa. The placement of channel initiation points, however, has always been a matter of individual interpretation, leading to...
Eash, David A.; Barnes, Kimberlee K.; O'Shea, Padraic S.; Gelder, Brian K.
Flood of August 24–25, 2016, Upper Iowa River and Turkey River, northeastern Iowa
Major flooding occurred August 24–25, 2016, in the Upper Iowa River Basin and Turkey River Basin in northeastern Iowa following severe thunderstorm activity over the region. About 8 inches of rain were recorded for the 24-hour period ending at 4 p.m., August 24, at Decorah, Iowa, and about 6 inches of rain were recorded for the 24-hour period...
Linhart, S. Mike; O'Shea, Padraic S.
Methods for estimating selected spring and fall low-flow frequency statistics for ungaged stream sites in Iowa, based on data through June 2014
A statewide study was led to develop regression equations for estimating three selected spring and three selected fall low-flow frequency statistics for ungaged stream sites in Iowa. The estimation equations developed for the six low-flow frequency statistics include spring (April through June) 1-, 7-, and 30-day mean low flows for a recurrence...
Eash, David A.; Barnes, Kimberlee K.; O'Shea, Padraic S.
Statistical summaries of selected Iowa streamflow data through September 2013
Statistical summaries of streamflow data collected at 184 streamgages in Iowa are presented in this report. All streamgages included for analysis have at least 10 years of continuous record collected before or through September 2013. This report is an update to two previously published reports that presented statistical summaries of selected Iowa...
Eash, David A.; O'Shea, Padraic S.; Weber, Jared R.; Nguyen, Kevin T.; Montgomery, Nicholas L.; Simonson, Adrian J.