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Last modified
9/26/2011 8:52:20 AM
Creation date
7/9/2008 2:40:07 PM
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Decision Support Systems
Title
SPDSS Task 5 - Key Structure, Left Hand Ditch System
Description
The Left Hand Ditch System has been identified as a key structure for the South Platte Decision Support System (SPDSS) consumptive use and surface water modeling efforts. The purpose of this Task 5 memorandum is to document physical, legal, and operational aspects of those key structures identified.
Decision Support - Doc Type
Task Memorandum
Date
1/5/2005
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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COMMENTS AND CONCERNS <br />The Left Hand Ditch Company should be modeled as a single entity with irrigation and <br />municipal demands for the SPDSS modeling effort since the company operates direct flow <br />rights, storage rights, and transbasin water for a number of ditches in an aggregate fashion. <br />Where to find more information <br />^ Procedures for determining key diversion structures and a list of all key diversion structures <br />selected is presented in SPDSS Task 3 -Identify Key Diversion Structures Overall Task <br />Memorandum. <br />^ Procedures for determining key reservoirs and reservoir systems and a list of all key <br />reservoirs and reservoir systems structures selected is presented in SPDSS Task 5 - <br />Identify Key Storage Elements Overall Task Memorandum. <br />^ The Water District 5 Meeting Notes prepared for SPDSS Task 3 -Identify Key Diversion <br />Structures contains additional information on ditch and reservoir operations within the <br />Water District. <br />^ The SPDSS Task 5 Memorandum -Northern Colorado Water Conservancy District and the <br />Colorado-Big Thompson Project contains additional information on the Boulder Feeder <br />Canal, NCWCD, and C-BT operations within the Water District. <br />^ The SPDSS Task 5 Memorandum -City of Boulder contains additional information on the <br />Boulder Feeder Canal and associated operations. <br />^ The SPDSS Draft Irrigated Parcel Mapping has preliminary irrigated area for the Left Hand <br />Ditch Company. <br />REFERENCES <br />1) Meeting with Water Division 1, Water District 5 Commissioner Scott Edgar. 970.686.0628. <br />2) Meeting with Left Hand Ditch Company representatives: Richard Behrmann, <br />Terry Plummer. September 16, 2004. <br />3) Teleconference with Kathy Peterson, Manager of Left Hand Water District. 303.530.4200. <br />4) Kenneth L. Bruns & Associates, Inc., December 1970, Preliminary Engineering Report, <br />Small Reclamation Project, Rehabilitation and Betterment Program Left Hand Ditch <br />Company, Boulder County, Colorado. <br />5) Leonard Rice Consulting Water Engineers, Inc., April 6, 1984, Colorado Water Resources <br />and Power Development Authority, St. Vrain Basin Reconnaissance Study, Task <br />Memorandum, Task 1-2 Hydrology and Water Resources Assessment. <br />Left Hand Ditch Operating Memorandum.doc 16 of 17 January 5, 2005 <br />
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