WSPC03144

• 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: 6/12/1996
• Title: Boyle IIIa WRP Enhancement-Phase IIIa Scope of Services-Tasks 1-11-Draft
• Water Supply Pro - Doc Type: Operating Principles/Plan

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RTIWR: Prepare a temporary or working ,dds file for everv .t,.""hITP. tied to an irrigated
parcel, i.e., for both explicitly model structures and the 'individual structures that are being
aggregated.
RTIWR: Run demandts in "crop" mode to get crop mix (.CDs) for each structure in the
intermediate dds file.
RTlWR: Run the consumptive use model using the intermediate dds file to generate an
consumptive use demand time series for each structure in the intermediate .dds file using
that structure's cron ~x.
RTIWR: Incorporate demandts average monthly estimates J) basin efficienc into the
command file for the white.dds priorto running demandts,
RTIWR: Run demandts in both "demand" and "diversion" mode using a command file to
generate the ddh and ddm input files, The command file will include both the explicitly
modeled Phase II structures as well as the aggregated groups identified in Phase m. The
ddh file will incorporate headgate demands derived from consumptive use estimates for the
aggregated structures,
STATE: Prepare a draft memo documenting the determination of aggregated structure
headgate demand time series in a 1-2 page memorandum, RTl would provide written
comments on this draft before State finalization.

Deliverables:
I, A list of aggregated structures and their associated County/HUC for structures tied to
irrigated lands in the White River Basin.
2, A interim .dds file containing all structures that are tied to irrigated parcels,
3, A ,CDs file that includes crop patterns for all structures tied to irrigated parcels,
4. A .dds file that incorporates basin wide efficiency values for aggregated structures,
5, Demand files (.ddh and .ddm) reflecting aggregated structures,
6. A memo describing the process and results of calculating demands for each of the
aggregated structures,

Subtask 2.10

Objective:

Aggregate Municipal and Industrial Use

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Aggregate municipal and industrial uses not explicitly modeled in Phase II to simulate
their depletive effects in the basin.

Assumptions:

- Basis for estimating basinwide M&I use is the Phase II Consumptive Use model and
database for "Other Uses".
- M&I uses are modeled as depletions rather than diversions with return flows.

Approach:
1. RTIWR: Determine the explicitly modeled water use (depletion) reflected in the Phase II
modeling effort at M&I structures on an average annual basis (12 values, one for each
month) for the White River Basin. This will be accomplished by running STATEMOD on
the Phase II dataset to generate the .xcu report. Tag each modeled M&I structure with the'
~/HUCcomDinati~and summarize M&I consumptive use in each County/HUC.

Phase lIJa Scope of Services

A-17

June 12, 1996