HYSEP baseflow separation

Hydrograph

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streamflow baseflow

BF – INT –

Drop a file

daily streamflow (date, flow) as csv, json, or parquet

Data

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Method

drainage area

interval

Summary

mean streamflow	–
mean baseflow	–
mean runoff	–
baseflow index	–
days used	–

Export

Fixed-interval, sliding-interval, and local-minimum methods of Pettyjohn & Henning (1979) as programmed in Sloto & Crouse (1996), HYSEP, USGS WRIR 96-4040. This page processes the record continuously (the 1996 program chunked it by year). Everything runs in your browser, so uploaded data stays on your machine.