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<br />" !' <br />-.J.. <br /> <br />---1 <br /> <br /> <br />Table 3 -- Analysis of Flood Control Improvement Options <br />~f~l1c6~iiiijt,j" ..... f@~~it;f <br />IiiliWiNGTHEPRoiiLEi\ii' """~W$'(" <br /> <br />~Mj <br />I''NO'ii <br /> <br /> <br />FC.3 <br /> <br />Provide forecast <br />capability <br /> <br />FC.4 <br /> <br />Modify dacrae <br /> <br />FC.5 <br /> <br />Raise spillway/dam <br /> <br />FC.6 Dredge reservoir <br /> <br />Procure hardware Be perform <br />administrative coordination to <br />allow SWCD to anticipate future <br />inflow to RG Reservoir, ellowing <br />some water to be bypassed and <br />space maintained for flood <br />control. <br /> <br />Modify decree to allow use of <br />reservoir for flood control storage <br />(i.e. SED would not charge <br />bypass for flood control against <br />irrigation water right). <br /> <br />See Item No. A.2 and the <br />following m> <br /> <br />See Item No. R.ll and the <br />following --.> <br /> <br />Could provtde sufficient <br />flood control space when <br />reservoir is approaching a <br />spill; that is, If forecast is <br />sufficient to fill reservoir <br />later under free river <br />conditions. <br /> <br />Adequate spaee in RG <br />would be available to <br />reduce flood peaks on <br />Aifle Creek. <br /> <br />With a 4 foot raise of the <br />maximum, could provide <br />1,482 af of flood control <br />storage space. <br /> <br />Could provkle sufficient <br />space to allow a small <br />flood control 001. <br /> <br />. May <br />affect <br />priority of <br />entire <br />water <br />right. <br /> <br />27 <br /> <br />. Initial cost = .15,000 <br />($5,000 for planning & <br />design; $10,000 for new <br />Sootel ske) <br />. About $2,000 for annual <br />08cM and coordination of <br />USBR, National Weather <br />Service, etc. <br /> <br />legal costs not estimated. <br />Could result in less water <br />and lost income to SWCD <br />irrigators. <br /> <br />- Will take time to bund confidence in <br />forecast reliability. Beneficiaries of this <br />option could be asked to make up any losses <br />if the reservoir did not fill later . <br />. One existing Snot81 site {Burrow Mtnt could <br />be used. <br />. Potentially could be part of a Dam Safety <br />early warning system. <br /> <br />- Water supply for irrigation may be reduced <br />if future inflow does not fill the reservoir. <br /> <br />. Short term use of radial gate for rainfall <br />events may mitigate concern about quick <br />removal of stoplog8. <br />. Need to perform costlbenefit analysis to <br />determine feS8ibmty. <br />- The dam does not have a full time operator <br />to close gates or place or remove spillway <br />stoplogs. <br />- Over the years, stoplogs or a radial gate <br />could be subject to gradual misuse (j.e to inc. <br />irri ation su 1). <br />