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I I I I I I I I I I I I I I I I I I I 3663 Evaluation of Contractual Effort and Future Studies The 208 Clean Water Grant was very helpful to the salinity control planning activities of. the Colorado Water Conservation Board. This grant allowed the investigation of several topics which are important to un~erstanding the overall salinity issues in the Colorado River Basin. The topics evaluated included: - Cost-effectiveness analysis for various salinity control proposals - Proposal summaries on the identified salinity control units - Tablulation of the municipal and industrial NPDES permits and an analyis of their impacts on salinity in the Colorado Rive r - An inventory of the salt loading sources which contribute to the Colorado River within Colorado - An analyis of the salinity impacts of the Bureau of Reclamation's Colorado River flow agumentation program - Brief review of various Colorado River models - Major impacts of salinity control projects within Colorado . Two of the above topics merit further study. Currently, the Bureau of Reclamation uses several river models in their planning activities and decision-making process. It would be very useful for the Colorado Water Conservation Board staff to have a working knowledge of the various models. Documentation of these models in an understandable format would be helpful to present and future staff. The second area of interest would be the continuous monitoring of the salt loading from the various major tributaries of the Colorado River. This would require an annual tabulation of the most recent salinity measurements from the U.S. Geological Survey. This tabulation could then be compared to previous data to determine the effectiveness of existing salinity control programs in the Basin or whether a program should be instituted in the area. -29- .. ..-.,,,......-......- . .