WSPC07048

• Title: MODSIM vs STATEMOD - Recommendation for CRDSS Water Resource Planning Model
• Description: Colorado River Basin - Colorado River Computer Models-Colorado River Decision Support System
• Decision Support - Doc Type: Report
• Date: 2/16/1995
• DSS Category: Surface Water
• DSS: All
• Basin: Statewide

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compari...on is achieved in Ollr C;'ISC by having STA lEMOD currently
operating 10 mimic MODSIM's implementation for the Gunnison River
Ua...in. The following execution times for the Gunnison River Ba...in
prototypes for hoth models arc cxprc"cd in seconds Ihal it 100"," to operate
one ye;.tf of the "udy period. For a JO year !>.ludy period. the hclow values
should he I;;,ken lime.;, 30.

~IODSIM STATEMOD
Execution Time Execution Time
70 seconds/year 9..cconds/ycar

The D~R team bt:lic\'c.. the execution speed difference is very significant
for the CRDSS waler resource planning model.

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MODS 1M
V'V'

STATEMOD
V'V'

BASIS:

E.xtensive docllmentation h.IS been prepared for the MODSI~1111odel ;:lIlJ
generally is adcqualc 10 dc..crihc the lIse of the model. 1I00\'cvcr. the
complexity of the lIlot.!e1ing concept still warralll.. adt.!itional
documentation. For example. it was rel.:ently learned that ...tmage water
passed through a link with an as...igncd priority is only altachcd to that
priority if that link is uircctly aUi..lchcd to <l t.!emal1l.l.

Documentation has hecn prepared for the 5TA TE~10D model and has
tx-en lIsed 10 implement the STATEMOD Gunnison River Ba...in
prototype. Bl.'I.:all"C of the ..illlpler modeling coneep'" ll';.ed in
ST ATEMOD. the dOI.:umcntation is nol as extensive as for the i\.10DSIM
model. Howe\er. 5T A TEMOD documentation woult.! need to he p];'lced
on line.

SUM~IARY

In re"'ponse to concerns ahoutthe developmel1l progress of the CROSS water rights planning
model prototype. the O~R team dc\"CloJX'd an ahern,uive modcl prototype ba.scd on the BESTSi\1
model. These two prototype model... have tlcen compared for ..everall.:riteria important to
CROSS water resource IlHxlel development. This compari...on i... ,ummarizcd in Table I where
three check marb represents a good level (If critCTi,l s;'lti...f;'Ktion. two check marks an adequate
level of criteria silti,fal.:tinn and one chcl.:k l1l;.JrIi. ;'U1l1ll<u:ccptable Ic\"el of criteria ..ati..faction.

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