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Watershed Model in Powersim

Authors: Thushara Gunda
Owners: Thushara Gunda
Resource type:Model Program Resource
Created:Oct 24, 2017 at 9:56 p.m.
Last updated: Mar 15, 2018 at 3:22 a.m. by Thushara Gunda


This model simulates runoff for an upland subwatershed in northern New Mexico using a system dynamics platform. This model was developed and applied as part of a research study to explore community responses to simulated streamflow under different climate change conditions in the Rio Hondo; this research was published in Water Resources Research: http://onlinelibrary.wiley.com/doi/10.1002/2017WR021223/full.

The structure for the upland hydrology model was strongly guided by input parsimony while capturing the primary processes of precipitation partitioning, evapotranspiration, baseflow, and saturation excess runoff that influence streamflow at the outlet. The water available in the stream is simulated using a lumped approach that characterizes the upland subwatershed into individual hydrologic response units (HRUs); the HRU method provides sufficient discretization of watershed properties while maximizing computational efficiency. Monthly precipitation and temperature data derived from the Bureau of Reclamation’s datasets, which have a resolution of 1/8th degree, for the upland subwatershed of the Rio Hondo were used as inputs into the model. Note: In addition to simulating streamflow under climate change conditions (i.e., increased temperatures and variable precipitation), the model also has an exploratory module for simulating impacts of wildfires on streamflows.

Subject Keywords

streamflow,system dynamics,watershed modeling

How to cite

Gunda, T. (2018). Watershed Model in Powersim, HydroShare, http://www.hydroshare.org/resource/c7fb9823f1df4f0ab61911bff2f9d3f5

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


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     Coordinate System/Geographic Projection:  WGS 84 EPSG:4326
     Coordinate Units:  Decimal degrees
    Place/Area Name: Upland Subwatershed of Rio Hondo

    North Latitude
    East Longitude
    South Latitude
    West Longitude


     Start Date:
     End Date:


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

    Name Organization Address Phone Author Identifiers
    Thushara Gunda


    People or organizations that contributed technically, materially, financially, or provided general support for the creation of the resource's content but are not considered authors.

    Name Organization Address Phone Author Identifiers
    Vincent Tidwell


    This resource was created using funding from the following sources:
    Agency Name Award Title Award Number
    National Science Foundation CNH 1010516
    National Science Foundation WSC 1204685
    National Science Foundation DGE 0909667


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