WSPC07425

• File Number: 8283.200
• Description: Colorado River Basin-Colorado River Computer Models-Colorado River Decision Support System
• State: CO
• Basin: Colorado Mainstem
• Water Division: 5
• Date: 1/1/3000
• Title: Boyle Contracts-Original-Software Development for Year 3 Basin Enhancement
• Water Supply Pro - Doc Type: Operating Principles/Plan

. MAY-01-1996 08:00 FROM RIVERSIDE TECHNOLOGY,INC

TO

13038664474320 P.07

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Updat~ the demandts utility to calculate basin-wide acreage-weighted monthly efficiencies to be
used in detennining appropriate efficiencies in the aggregate structures.
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Approach:
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!1.
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!

Modify the demandts report option to calculate bac;in-wide acreage-weighted monthly
efficiencies using the following equation (where i = month, j = structure):

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).,
TJi a LA)

[2. Update the documentation for demandts to rencet changes to the software.

Delive~ables:
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[. An enhanced demandts utility capable of calculating a report listing basin-wide
i acreage-weighted system efficiencies.
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i. Updated on-line documentation for the demandts utility consisting of an updated man
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i page and HTML file.
!

3.06 sJpport Task 2.08 - Estimate aggregated structure demands and historic diversions
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Objectire:
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MOdif~ the demandts utility to produce a monthly demand time seties file (.ddm) given a
diversion station file with aggregate structures (.dds), an existing historical diversion time series
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file (.dc!h) and a demand time series file (.ddc) containing separate time series for each of the
structu7s to be aggregated.

Appro~h:
i
il. The consumptive use model will have been run for each agricultural structure in the
i data set to give an irrigation demand time series at each agricultural diversion
structure. This will be done in Task 2.08. The consumptive use model wilI be used
for individual structures that have valid GIS irrigated acreage (not on aggregated
structures).

The demandts utility will be updated to generate a historical diversions me (.ddh)
containing headgate diversions for each explicitly modeled structure as well as the
aggregate structures. However, unlike the Phase II data sets in which each structure
always had some type of historical diversion time series (sometimes supplied with
the replaceO option), aggregate Structures will not have historical diversion time
series (because of QNQC and budget issues). Therefore, to complete the historical

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