MODSIM Model - Watershed Management

[jwang@echo-on.net (Jie James Wan]

Hi Michel,

I had some experience to build watershed models for water resources management.
In fact I started to use a very simple model, ABC model to estimate the
quantiry of annaul water flow in a river basin. ABC model is a very simple
differential equation model with only three parameter developed by Prof.
Fering. I like the model because its clean cencepts.

In 1987 I did some study on different simulation model for watershed water
resources assessment. I concluded that there were so many models for watershed
simulation, the best model was the model exclusively developed based on the
simplest concept inherited from the ABC model. At that time I did some
study of rainfall data, its regeneration and disaggregation over watershed.

In 1992 I transfered the model to SD model by using ithink package.
I found it is really simple to costumize the concept for variety concerns
in water resources assessment. We may even include water use information
in SD model to generate different scenarios for water resources management.

Generally Speaking, SD model is good for simulation study of watershed
assessment, ithink/stella makes the study quite easy.

JIE

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_/_/_/_/_/ _/ _/ _/ __/_/_/ _/ _/ _/_/_/_/ Jie J. Wang
_/ _/ _/ _/ _/ _/ _/_/ _/ _/ 283 Wolverleigh Blvd.
_/ _/ _/_/ _/ _/_/_/_/ _/ _/ _/ _/ _/_/Toronto Ont. M4C 1S3 Canada
_/ _/ _/_/ _/_/ _/_/ _/ _/ _/ _/_/ _/ _/ Tel: (416)-696-0361
_/_/ _/_/ _/ _/ _/ _/ _/ _/ _/_/_/ Fax: (416)-696-2324
Email: jwang@echo-on.net
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[Michel Chevalier]

Hi there!

Im currently doing a thesis on a watershed management project in Dominican
Republic, and I need to know a little bit more about the MODSIM simulation
model, developped by the University of Colorado. This model is used to
estimate the annual volume of irrigation water and the power generated by one
m3 of reservoir space. It has been used in Dominican Republic for the Plan
Sierra, and I would like to know how the model works.

If you have any information, references, or contacts related to the MODSIM
model, I would appreciate to hear from you!

Thanks

Michel Chevalier
roseau@videotron.ca

[forda@mail.wsu.edu (Andy Ford)]

This is Andy Ford at WSU responding to the MODSIM question from Michel
Chevalier in the Dominican Republic. I believe MODSIM was developed by
John Labadie of Colorado Sate Univ. It represents the physical river
system as a series of nodes and links. A node can stand for both storage
and non-storage aspects of the river sucyh as reservoirs, demand/diversion
structures, inflow location, etc. A link represents reaches of the river,
canals, tunnels, etc. I get the impression that MODSIM is extremely
complicated-->to match the operational complexity of controlling the flows
in the river--its used by the Bureau of Reclamation out here in the West.
There is a home page to learn more:

http://palisades.pn.usbr.gov/manuals/modsim/modsim.html

----------------------------------------------------------
Andy Ford
Program in Environmental Science and Regional Planning
Washington State University
Pullman, WA 99164-4430
(509) 335-7846
FordA@mail.wsu.edu
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