Indiana
The report below documents the regression equations available in StreamStats for Indiana, the methods used to develop the equations and to measure the basin characteristics used in the equations, and the errors associated with the estimates obtained from the equations. Users should familiarize themselves with this report before using StreamStats to obtain estimates of streamflow statistics for ungaged sites.
- Rao, A.R., 2005, Flood-Frequency Relationships for Indiana: Joint Transportation Research Program, Purdue University, FHWA/IN/JTRP-2005/18, 14 p.
Interactive Map
Stream slope is used as an explanatory variable in the peak-flow regression equations for all hydrologic regions of Indiana except for region 8. The method used by StreamStats to compute stream slope is somewhat different than the method used to develop the dataset used by Rao (2005) for his regression analyses. The average difference between the StreamStats values of stream slope and the values used by Rao is about 4 percent, but differences for some individual stations exceeded 100 percent. As a result, users should consider that the errors associated with the flow estimates provided by StreamStats are probably somewhat greater than the published standard errors of prediction.
StreamStats for Indiana was developed in cooperation with the Indiana Department of Natural Resources.
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