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~ " ( 2197 Impacts from such a transfer would involve many of the same impacts on Ft. Lyon sl:a .ch:,Iders, other water users, the environment, and possibly farm oriented businesses as an out of basin transfer. The impacts, using the baseline analysis above, to the local economy, tax base, service levels, and economic development opportunity could be substantially different, however. In addition, environmental mitigation could occur depending on the type of use. Alternative 2: Water Supply Management Prior engineering studies for the Ft. Lyon Canal Company have indicated an irrigation efficiency under the canal averaging approximately 47 per cent. This value is based on canal losses averaging 30 percent, lateral losses averaging 10 percent, and fann losses averaging 2S percent. As previously described, a lower value of 18.24% for ditch losses was used in the Kansas v Colorado litigation. Structural improvements may be proposed in order to increase the irrigation efficiency under the system. These could include lining of canals or laterals or other on-farm delivery improvements. In addition, this could include a review or change of the management or delivery practices of the Canal Company to increase the overall irrigation efficiency. Additionally, many Ft. Lyon shareholders have developed supplemental ground water supplies to improve their total farm water supply. The integration of additional ground water supplies into the system will be reviewed. Programs such as these will be evaluated to determine whether incentives may be developed so that the agricultural users would be less likely to sell water to other competing uses. Alternative 3: Water Salvage As previously described, the Ft. Lyon Canal has seepage losses of approximately 18% to 30% over its 110 mile length. Seepage losses in the laterals also have previously been estimated to be approximately 10%. Many of the laterals have been lined to improve the water supply as water is apportioned at the !av' .'cl headgate, not at the sublateral or farm headgate. In lined laterals a greater farm heau, e supply per share is available and therefore a greater historic consumptive use per shi.i:"e may be calculated upon which a sales price normally is established. Historically, the Ft. Lyon has been irrigated by traditional flood irrigation, supplemented, especially in the drought years of the 1950's with groundwater, and occasional sprinklers. The feasibility of lining the main canal (as well as the storage canal, and storage reservoirs) has been studied by the Ft. Lyon company itself in the past, and to some extent by the current Boyle study with regard to the alternatives to Great Plains Reservoirs water supply. Reduction in seepage would allow existing irrigators to increase the water supply 11