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HEC-HMS 4.2.1 Model for Rapidan River Watershed, VA

Authors: J Marie Benavides
Owners: J Marie Benavides
Resource type:Model Instance Resource
Created:Nov 21, 2017 at 12:34 a.m.
Last updated: Nov 21, 2017 at 12:54 a.m. by J Marie Benavides


HEC-HMS 4.2.1 can be used to accurately route stream flow through a selected watershed. A model of the Rapidan River Watershed, VA was calibrated using a precipitation event occurring on April 2nd, 2005 at 15:00PM. The baseflow method chosen was the recession method and Muskingum routing was used as a routing method. Optimization trials were used once the model closely resembled the observed precipitation event. Model accuracy was determined by the Nash-Sutcliffe model efficiency coefficient and Peak Volume of discharge, before testing the model with additional precipitation events of similar size and seasonal occurrence. Peak discharge volume was unable to match the observed data for additional storms. The model was able to predict the time of peak discharge with accuracy, all three storm peaks reported within 15 minutes of observed data. Since this model was able to accurately predict the time of the peak discharge, it is still possible to use this model for temporal flow routing through the Rapidan River Watershed. It would not be accurate to use this model to quantify the amount of discharge occurring during a precipitation event.

Subject Keywords

HEC-HMS,Discharge,Rapidan River,Virginia,Flow-routing

How to cite

Benavides, J. M. (2017). HEC-HMS 4.2.1 Model for Rapidan River Watershed, VA, HydroShare, http://www.hydroshare.org/resource/7c90199ee71b4c3b90b311f16b871b62

This resource is shared under the Creative Commons Attribution CC BY.


Sharing status:

  • Public Resource  Public
  • Sharable Resource  Shareable



 Coordinate System/Geographic Projection:  WGS 84 EPSG:4326
 Coordinate Units:  Decimal degrees
Place/Area Name: Rapidan River, Virginia

North Latitude
East Longitude
South Latitude
West Longitude


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The people or organizations that created the intellectual content of the resource.

Name Organization Address Phone Author Identifiers
J Marie Benavides University of Virginia
Model Output
Includes output files? No

Executed By
Name Unspecified


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