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<br />Collection of Saline Return Flows <br /> <br />. <br /> <br />Several problems exist in this approach. <br />collecting sufficient amounts of saline return <br />salinity reductions equivalent to improvements <br />prohibitive. If the water could be collected, <br />water rights in removing water from the system <br /> <br />For example, the cost of <br />flows that would result in <br />in the canal system would be <br />then the problem of the <br />becomes an issue. <br /> <br />Desalting plants <br /> <br />The technology associated with desalting plants has not progressed to <br />the state where this is a viable alternative from a cost effectiveness <br />standpoint. <br /> <br />Evaporation Ponds <br /> <br />The water consumed by evaporation ponds could be charged to Utah's <br />allocation of Colorado River water. This appears to be unacceptable to the <br />State. <br /> <br />Deep Well Injection <br /> <br />This alternative would not be cost effective because of difficulty in <br />finding water tight formations. <br /> <br />Retirement of High Salt Contributing Lands <br /> <br />This alternative would require that the water supply associated with <br />these lands not be used for further irrigation. The water users in the <br />area, because of shortages of water in midseason, would consider retire- <br />ment of saline land, but would not consider reduction of any water rights. <br /> <br />No Action <br /> <br />With this alternative the goal of maintaining the salinity level at <br />Imperial Dam at 879 mg/L would not be achieved. This could also mean <br />that water developments in t~e Upper Basin would be restricted. As with <br />all studies done by the Bureau of Reclamation, the decision to take no <br />action can be made if a feasible plan cannot be identified. <br /> <br />Candidate Plans <br /> <br />The alternative which was the most well received and economically <br />sound was canal lining, it was from this alternative that the concept of: <br />(1) concrete lining of canals, (2) combination of earth and concrete <br />lining, and (3) a pipeline system were developed. <br /> <br />OuC46J <br /> <br />14 <br />