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I I I I I I I I I I I I I I I I I I I Due to the deficiencies listed above the State Engineer has placed a restriction on the dam ac Gage Height 18.0 feet. This was done to obtain more storage to hold a storm that may exceed the capacity of the two spillways and to provide for adequate freeboard for wave runup. Because of the deteriorating conditions, the owner is concerned with the possibility of future restrictions and the possibility of having a major failure around the outlet conduit. Based on the present condition of the dam and its rate of deterioration, we believe the dam has a useful life of 5 to 10 years unless major repairs are undertaken. We also believe that over the next few years the State Engineer will continue to restrict the storage height due to the condition of the outlet. The restrictions at this time do not greatly affect the operation of the reservoir but the possibility of a major failure at the outlet is of imminent concern. Without repair of this reservoir, the North Poudre Irrigation company is faced with the potential for failure of the East Dam around the outlet and may be in a situation where they can no longer serve the 3400 acres of land out of Reservoir No. 2 but would have to transfer water the extra distance from Reservoir No. 15. The main reason for the need to rehabilitate Reservoir No. 2 is the concern over safety and the efficient operation of the system, not the need to increase the storage of water in this part of the system or the potential for loss of the water right. 2. Proposed Improvements. In order to restore the reservoir to full utilization, it is necessary to reconstruct and repair major portions of the dam. Both the upstream and downstream faces need to be reworked to a flatter slope. The crest of the dam must be raised three feet to provide adequate freeboard; a new outlet works needs to be installed; riprap and riprap bedding must be placed on the upstream slopes; a toe drain must be installed to control the underseepage; and a new spillway constructed that will pass 75% of the PMP as required by the State Engineer's office for a Class I, intermediate size dam as outlined in Rule 6 of The Rules And Requlations For Dam Safety And Dam Construction. B. Geoloqic Investiqations. The geologic and geotechnical investigations are described in Appendix G. C. Desiqn. The design criteria for the dam and spillway structures is based on several current publication including textbooks, Corps of Engineers design manuals, and Bureau of Reclamation design manuals. A list of references is provided in Appendix G with the geologic investigation and a summary of the stability analyses is provided which describes the design criteria used for the dam design. The hydraulic and hydrologic design references and hydrologic report are included in Appendix F. Design of the riprap and riprap bedding are from NAVFAC DM-7 which is Reference 11 in Appendix G. Appendix F contains the discharge V-2