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Rough and Ready Irrigating Ditch Company <br />October 18, 2013 (October 21, 2013) <br />Page 3 of 5 <br />Water Rights <br />The water rights impacted by this project include <br />TABLE 1: IMPACTED DIRECT FLOW WATER RIGHTS <br />Agenda Item 8c <br />Name <br />Amount (CFS) <br />Appropriation Date <br />Adjudication Date <br />Rough and Ready Ditch <br />41.67 <br />3/13/1869 <br />6/2/1882 <br />Rough and Ready Ditch <br />41.67 <br />3/4/1873 <br />6/2/1882 <br />Palmerton Ditch <br />32.35 <br />5/31/1865 <br />6/2/1882 <br />Palmerton Ditch <br />47.70 <br />5/31/1866 <br />6/2/1882 <br />Palmerton Ditch <br />1 84.26 <br />1 6/30/1874 <br />1 6/2/1882 <br />TABLE 2: IMPACTED STORAGE WATER RIGHTS <br />Name <br />Amount AF <br />Appropriation Date <br />Adjudication Date <br />Pleasant Valley Reservoir <br />1608 <br />6/1/1871 <br />2/21/1883 <br />Pleasant Valley Reservoir <br />924 <br />2/3/1904 <br />6/1/1926 <br />Pleasant Valley Reservoir <br />2532 <br />12/31/1929 <br />7/23/1951 <br />Oligarchy Reservoir #1 <br />1080 <br />7/2/1889 <br />3/22/1890 <br />Oligarchy Reservoir #1 <br />357 <br />3/31/1890 <br />3/13/1907 <br />Oligarchy Reservoir #1 <br />386 <br />11/14/1892 <br />3/13/1907 <br />McCall Reservoir <br />506 <br />3/15/1909 <br />1 6/1/1926 <br />Average annual diversions through the diversion structure are 7,528 AF through the Rough and <br />Ready headgate and 4,285 AF through the Palmerton headgate. <br />Project Description <br />The Project goal is to reconstruct the Company's St. Vrain Creek diversion structure, which was <br />destroyed by the September 12 -16, 2013 flood, including the diversion dam, sand gates, Rubicon <br />flumegate, headgates, ditches, and measuring flumes. The Company has retained Deere and Ault <br />Consultants, Inc. to provide design and construction review services. <br />Alternative 1 — Do Nothing: This alternative is considered unacceptable. Failure to replace the <br />diversion structure would prevent the diversion of the Company's water rights and result in the <br />inability to uphold the Company's responsibility to deliver Pleasant Valley Reservoir, Oligarchy <br />Reservoir #1, and McCall Reservoir water rights. <br />Selected Alternative 2 — Rebuilding Collaboratively with Improvements: The Rough and Ready <br />Ditch and Palmerton Ditch already serve multiple users and interests, including the shareholders of <br />the two Companies, and the owners of the Oligarchy Reservoir #1 and McCall Reservoir. The <br />Rubicon flumegate serves the interests of the St. Vrain Creek Corridor Committee for preserving <br />stream flow past the structure. The Project will reconstruct the damaged facilities in the same <br />location, size and for the same function as the pre -flood structure, with a combined conveyance <br />section and the addition of a bypass to the river to regulate diversions, and with improvements to <br />provide a long lasting installation. The rebuilt structure will provide a better hydraulic cutoff and <br />energy dissipation, which should provide additional protection of the structure under future flood <br />flow conditions. The rebuilt headgates structure will combine the diversions for both ditches into <br />one ditch with one set of headgates at the river. A bypass channel with gates will return water to St. <br />Wain Creek prior to the bifurcation of the two ditches. A bifurcation structure with gates for each <br />ditch will control the diversions into the Rough and Ready Ditch and into the Palmerton Ditch. <br />