USGS is updating how statistical information is delivered. WaterWatch and WaterQualityWatch will be retired around February 24, 2026. Explore alternative tools and share feedback at wdfn@usgs.gov.
USGS Area-Based Runoff Duration Hydrograph Builder
State
 Water Res. Region
 Year:
Runoff type:
No. of years:
Draw 5th and 95th percentiles as:
Year Type:  
Output:

For some streams, flow statistics may have been computed from mixed regulated
and unregulated flows; this can affect depictions of flow conditions.

Duration Hydrograph
Duration hydrograph legend

Additional Information