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Last modified
9/26/2011 8:36:12 AM
Creation date
7/8/2008 1:43:58 PM
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Decision Support Systems
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
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associated with FRICO-Milton is assigned the unique identifier `0203876_I' to <br />designate that the primary source as Milton Reservoir (0203876). <br />Key Diversions Systems <br />Diversion systems are defined as a group of diversion structures on the same tributary and <br />operated in a similar fashion to satisfy a common demand. Diversion systems represent the water <br />rights, acreage, and historical diversions of each component diversion structure explicitly. <br />Example diversion systems are as follows: <br />• Berger Ditch Diversion System (8000774_D) has four separate ditches that <br />commingle and irrigated lands for a single ranch. The ditches operate conjunctively <br />to meet a common demand. <br />• The City of Aurora has transferred many irrigation ditches in Water District 23 to <br />municipal use. Per decree, these ditches are logically grouped and administered at <br />stream gages in the basin. The water rights and operations associated with the <br />"administrative gages" are represented as diversion systems. <br />• Water rights associated with Riverside Ditch (0100710) and Illinois Ditch (0100504) <br />are taken through Riverside Canal (0100503). They are represented, along with <br />Riverside Canal water rights, under Riverside Diversion System (0100503_D). <br />Diversion systems are generally given a unique identifier that includes the one of the structure <br />WDIDs (usually the largest) with a `_D' extension. For example, Riverside Diversion System is <br />assigned the unique identifier 0100503_D. In the specific case of the City of Aurora transfers, <br />the unique identifiers have been given the abbreviation of the administrative gages used to <br />measure the city's allowable transfer credit with a `23_' prefix to signify the diversion system is <br />in Water District 23 (for example 23_TARCOMCO). <br />
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