RGDSS_Task6-10_HistoricMonthlyModel_CriteriaFile

• Title: RGDSS Task 6-10 - Develop Phase IA Historic Monthly Model - Prepare Criteria File
• Description: Memo documenting development of operating criteria file.
• Decision Support - Doc Type: Task Memorandum
• Date: 2/24/2000
• 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

Table 1
Reservoir Accounts in Explicitly Modeled Reservoirs
Name Accounts Account Size (afl
1. CONTINENTAL RESERVOIR Rio Grande Canal 24,044
Monte Vista Canal 2.672
Direct Flow Storage 10,000 '
2. RIO GRANDE RESERVOIR Farmers Union Canal 51,113
Direct Flow Storage 10,000 ~
3. SANTA MARIA RESERVOIR Rio Grande Canal 33,722
Monte Vista Canal 3752
Direct Flow Storage 10,000
4. LA JARA RESERVOIR Conservation Pool 14,055
5. TERRACE RESERVOIR Alamosa Creek Canal 7,591
Terrace Main Canal 7,591
6. PLATORO RESERVOIR General Pool (20) 53,571 s
Direct Flow Storage (15) 10,000 a
7. SANCHEZ RESERVOIR Sanchez Irr. Company 103,114
8. MOUNTAIN HOME RESERVOIR Trinchera Irrigation Company 18,595
9. SMITH RESERVOIR Trinchera Irrigation Company 5,000
10. SAN LUIS LAKE Conservation Pool 12,697
11. CostRes Colorado Pool 6,420
New Mexico Pool 11,480
12. EastRes (Eastdale No.l and Not) General Pool 6,507
Notes: (1) Direct flow storage by Rio Grande Canal and Farmers Union Canal
(2) Direct flow storage by Rio Grande Canal, Farmers Union Canal and Empire Canal
(3) Flood control operations are represented in the model which seasonally reduces general pool.
Access to general pool by 20 ditches in Conejos Water Conservancy District
(4) Direct flow storage by 15 ditches in Conejos Water Conservancy District
Reservoir operating rules for each explicitly modeled reservoir are shown in Tables 2 through 11
(Attachment 2), along with summary information on reservoir accounts, account sizes and
storage decrees. In addition rules have been implemented (Rule Type 9) to make releases from
reservoirs (if necessary) to meet historical end of month reservoir contents (Table 12,
Attachment 2). The rule types that have been implemented for reservoir operations include:
Rule Type
Description
2 Reservoir Release to a direct diversion demand or carrier
6 Physical Exchange or Paper Exchange (bookover)
9 Release for target contents
16 Reservoir storage using direct flow diversion rights
Of the 146 reservoir operating rules used in the Rio Grande surface water model, approximately
100 rules were developed to represent to the practice of storing water under direct flow water
rights, then releasing this water at a later time to the same ditches under the rights it was stored.
This practice has been decreed for several ditches on the Rio Grande for storage in Santa Maria,
Continental and Rio Grande reservoirs, and for most ditches in the Conejos Water Conservancy
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