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projected a minor average annual reduction in energy production of 67 megawatt hours out of 757,000 megawatt hours. Attempts will be made to minimize losses in energy production through discussions at Aspinall operation coordination meetings held each January, April and August. Reclamation will also need to coordinate with Western Area Power Administration in conducting more detailed studies of alternatives and impacts to support implementation of any long term agreements to avoid or mimmizP losses during extended dry periods. These studies should consider such things as daily and seasonal variations in hydropower production and value and/or measures that could be taken to enhance available capacity and increase efficiency. There will be no significant adverse effect on the water supply of the Redlands Water and Power Company for hydropower production or irrigation. In extreme drought periods, such as 1977, the interim agreement calls for sharing water shortages. For example, neither the fish nor the water users would receive a full water supply. Water for the interim agreement will come from water already reserved in the Aspinall Unit for endangered fish use (148,000 acre-feet has been set aside) so future water uses and sales will not be affected. The interim agreement is designed to be compatible with authorizing language and intent of the Colorado River Storage Project Act and is not intended to interfere with the purposes of the Aspinall Unit. No Indian Trust assets are known to exist in the Redlands Diversion Dam area, nor in the Aspinall Unit reservoirs. Therefore alternatives being considered would have no effect on such assets. Cultural Resources Existing conditions Over the years, land in the immediate project area has been disturbed by various construction projects related to the Redlands Diversion Dam, railroad construction, agricultural practices, and other activities. Evidence of prehistoric resources is not present. The Redlands Diversion Dam itself has an interesting history. Construction on the Redlands project began in 1905 and Benjamin and Frank Kieffer incorporated the Redlands Irrigation Company in 1906. The original diversion dam was about 1,000 feet upstream from the present location; the existing dam was built in 1918. Operators of the Redlands project originally sold electric power and water, and irrigated substantial acres of company land. Later, the company's agricultural land was sold to private farmers and the company operated primarily as a water distributor and power producer. Today, the company still operates in this manner, although most customers are now homeowners rather than farmers. The Redlands Dam Complex, including the diversion dam, canal system, and power plant, has been recorded as a historic site (5MB764) and is considered eligible for the National Register for Historic Places by the Colorado Historical Society. 33