RGDSS_Task6-7_HistoricMonthlyModel_DiversionFiles

• Title: RGDSS Task 6-7 - Develop Phase IA Historic Monthly Model - Prepare Diversion Files
• Description: Memo documenting development of Phase 1a diversion files.
• Decision Support - Doc Type: Task Memorandum
• Date: 11/4/1999
• DSS Category: Surface Water
• DSS: Rio Grande
• Basin: Rio Grande
• Contract/PO #: C153863
• Grant Type: Non-Reimbursable
• Bill Number: HB98-1189, SB99-173
• Prepared By: Leonard Rice Engineering

RGDSS Memorandum
Final
TO: Ray Bennett
FROM: Jim Brannon, Ed Armbruster, Hydrosphere
SUBJECT: RGDSS Surface Water, Task 6.7 -Prepare Diversion Files
DATE: November 04, 1999
CC: Randy Seaholm
Introduction
This memorandum represents delivery associated with Task 6.7, Prepare Diversion Files /
Memoranda. The objective ofthis task is as follows:
Develop and operate a command file for the DMI watright that generates the diversion
water right and preliminary diversion station files. Develop and operate a command file
for the DMI demandts that generates the monthly historic diversion file , including data
filling techniques. Develop the monthly historic demand file.
Diversions are described in the Rio Grande Surface Water Model by five files: the direct
diversion station file (rg. dds), direct diversion right file (rg. ddr), return flow delay file (rg. dly),
historical diversion file (rg.ddh), and the direct diversion demand file (rg.ddm). The development
of each of these files is discussed below. The input files that were developed during Task 6 are
those used for the Phase la historic monthly model, which represents approximately 90 percent of
decreed surface water rights in the basin. Subsequent phases of model development will involve
modifications to these input files to include 100 percent of the basin consumptive use (including
100 percent of surface water diversions and groundwater pumping).
Direct Diversion Station File
The Direct Diversion Station (rg.dds) file describes the physical properties of each diversion
simulated in the Rio Grande Surface Water Model. As described in a memorandum documenting
Task 6.2 of the surface water modeling efforts, 518 diversions are modeled explicitly.
Subsequent modeling efforts will include representing groundwater wells and remaining surface
diversions in an aggregated fashion.
The rg.dds file was developed using the DMls watright and demandts run against HydroBase
along with a series of commands to set or replace certain aspects of the data (Attachment 1
contains the rg.dds file with the command files echoed at the top ofthis input file). The rg.dds
file is first created using the DMI watright, then modified using the DMI demandts to incorporate
diversion data required to refine or develop information concerning ditch capacities and ditch
efficiencies. Modification of the rg. dds file occurs during creation of the historic diversion file
(rg.ddh) file using the DMI demandts (discussed below).
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