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a major slide in 1914, at which point the reserv oir was restricted to approximately 21,000 ac-ft. <br />The dam face was repaired but suffered another ma jor slide in 1916, at which point the reservoir <br />was restricted to approximately 10,500 ac-ft. Re pairs were again made in 1922 and storage <br />restrictions varied un til 1963. The Standley Lake Reservoi r embankment was enlarged in 1963 <br />by the City of Westminster. The enlargement provided an additional 20,000 ac-ft of storage <br />capacity for a total of about 43,000 ac-ft. Follo wing the enlargement, storage restrictions <br />continued to limit the available stor age due to spillway concerns. <br />New outlet works and a spillway were <br />constructed in 2004 a ssociation with the <br />Standley Lake Dam Improvement Project. <br />The new spillway consists of a single <br />large concrete weir and stilling basin, <br />with additional downstream drop <br />structures and riprap for energy <br />dissipation. The new spillway can pass <br />approximately 60,000 cfs, equal to the <br />estimated Probable Maximum Flood. <br />Share holders that currently have <br />ownership in either the reservoir or the <br />canal network within the FRICO Standley <br />Standley Lake <br />htt p :// p ro j ects.ch2m.com/Standle y Public/default.as p <br />Lake Division include FRICO and the <br />Cities of Westminster, Northglenn, and Thornt on. The City of Westminster manages the <br />Standley Lake Regional Park, located adjacent to the reservoir. The reservoir and surrounding <br />wildlife area are popul ar recreation areas. <br />Reservoir Accounts: <br />There are 2,373.53 shares outstanding in the FRICO Standley Lake <br />Division. Share ownership is as follows as of spring 2006 (includes entitlement to both <br />Table 1 <br />the reservoir and Croke Canal) is summarized in : <br />Table 1 <br />Standley Lake Ownership <br />Storage Accounts (ac-ft) <br />Number Percent <br />Share Holder <br />of Shares Ownership <br />4-Way* FRICO shares Total <br />City of Westminster 955.535 40.26 13,500** 8,347 21,847 <br />City of Thornton 349.16 14.71 8,500** 3,050 11,550 <br />City of Northglenn 675.38 28.45 --- 5,900 5,900 <br />FRICO Irrigators 393.45 16.58 20,734 3,437 16.58 <br />Total 2,373 100.0 42,734 20,734 42,734 <br /> Notes: Source: FRICO (April 2006) <br /> * See description of Four-Way Agreement in Operational Information section <br /> ** Includes 1,500 ac-ft originally assigned to Thornton that was later sold to Westminster <br />The distribution of storage account s in the reservoir wi ll vary based on the actual amount of <br />FRICO shares held by the different entities ove r time. Cooperative use of the storage space by <br />the Standley Lake Cities and FRIC O is described further in the Operational Information section. <br />11 of 24 <br />