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SPDSS Memorandum <br />Final <br />To: Ray Alvarado and Ray Bennett <br />From: LRE, Erin Wilson and Beorn Courtney <br />Subject: Task 5 -Key Structure Operating Memorandum - FRICO-Marshall Lake Division <br />Date: March 3, 2005 <br />INTRODUCTION <br />One of the Task 5 objectives is to: <br />Develop and document an understanding of the operations of key water use facilities in <br />the basin in order to facilitate consumptive use modeling and to support selected data <br />needs for modeling being done by other contractors. This understanding will be <br />developed through interviews with DWR personnel, operators of large canal and <br />reservoir systems, and representatives of federal facilities. <br />Types of key water use facilities include diversion structures, transmountain diversions, <br />reservoirs, and reservoir systems. <br />• Key diversion structures, identified as part of Task 3, include structures representing 85 <br />percent of net decreed rights, structures diverting greater than 1,000 acre-feet per year, <br />and structures of administrative importance. <br />• Key transmountain diversions, identified as part of Task 4, include those structures that <br />transport non-native water from another basin into the South Platte River basin. <br />• Key reservoirs, identified as part of Task 5, include reservoirs or reservoir systems with <br />greater than 10,000 acre-feet capacity and/or reservoirs that should be included in <br />potential future modeling efforts due to their impact on basin operations. Reservoir <br />systems are defined as a group of reservoirs on the same tributary or filled by the same <br />diversion structure that satisfy a common demand or are operated in a similar fashion. <br />A number of components in the Farmers Reservoir and <br />Irrigation Company (FRICO) -Marshall Division have <br />been identified as key structures for the South Platte <br />Decision Support System (SPDSS) consumptive use and <br />surface water modeling efforts. The purpose of this <br />Task 5 memorandum is to document physical, legal, and <br />operational aspects of those key structures identified in <br />the System. <br />Table of Contents Page <br />System Overview 1 <br />Physical Information 2 <br />Water Rights 8 <br />Operational Information 10 <br />References 11 <br />The information provided in this memorandum was developed from publicly accessible sources <br />and discussions with Bob Carlson (Water District 6 Commissioner). Attempts to discuss this <br />system with FRICO were unsuccessful. Information in this memorandum is believed to be <br />accurate. However, information should not be relied upon in any legal proceeding. <br />