SPDSS_Task3_KeyDiversionSTructures_Summary

• Title: SPDSS Task 3 - Summary of Key Diversion Structures
• Description: This memo provides the key surface water structures for the SPDSS Historical Consumptive Use analysis and for future modeling efforts.
• Decision Support - Doc Type: Task Memorandum
• Date: 4/7/2008
• DSS Category: Surface Water
• DSS: South Platte
• Basin: South Platte
• Contract/PO #: C153954
• Grant Type: Non-Reimbursable
• Bill Number: SB01-157, HB02-1152, SB03-110, HB04-1221, SB05-084, HB06-1313, SB07-122
• Prepared By: Leonard Rice Engineering

Figure 1
South Platte Acreage Categories
Non-Key Surface
Water Structures
9,427 Acres
1%
Recommendations
Structures identified as key will be used in the Phase 3 Historical Crop Consumptive Use
analysis. However, additions and deletions to the list of key structures and diversion system
structures may occur as more information is gathered during surface water modeling efforts. This
document will be updated in the future if necessary.
Comments and Concerns
Eight-four percent of the absolute decreed direct water rights in the SPDSS study area are
represented explicitly. This representation accounts for 99 percent of the acreage assigned to
surface water diversions. Key structures, including irrigation, municipal, transbasin, and carrier
structures, account for approximately 85 percent of decreed direct water rights. An additional 1
percent of the decreed direct water rights are represented in the aggregate structures. The decreed
direct water rights not included in key or aggregate structures are generally associated with
historic or inactive structures (CIU = H or I).