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3053 . . . 3. in southeastern Colorado have limited water-oriented recreation resources, the drawdowns may be tolerated and not be detrimen- tal to recreation use of Pueblo Reservoir. National Park Ser- vice planners have considered the effects of the fluctuating water level and are designing the recreation facilities to conveniently accommodate-reservoir users during low water level periods. For example, the plans provide that the Bureau of Reclamation construct portable sanitary facilities and flexible design of utilities to service boaters, extended boat launch ramps, boat basins, and low water access points. In addition, a major public use area including swimming and other day use oriented facilities will be constructed below the darn. The City of Pueblo plans to construct a 50 million gallon-per- day water treatment plant on Federal lands immediately below the darnsi te. The plant will treat the water for municipal and industrial uses. Treatment will include filtration, disinfec- tion, taste and odor removal, stabilization facilities and possible softening capabilities. Tentative plans indicate the plant will primarily serve Pueblo and to a lesser extent, the Arkansas River Valley towns and communities. Purpose of the action Pueblo Dam and Reservoir will provide terminal storage for imported Project water and native flows of the Arkansas River. This !torage facility will regulate water for supplemental irrigation to about 28a,5ao acres of existing cultivated land primarily in the Arkansas Valley, and regulate municipal and industrial water to the City of Pueblo and downstream Arkansas Valley communities. The reservoir will store flood waters and thereby lessen flood damage to Pueblo and other Arkansas Valley communities. The stored water provides a means to partially meet the water- oriented recreation needs of the surrounding metropolitan pop- ulation, accommodate the wildlife within management areas, propagate fish and provide lake and some stream habitat, and reduce sedimentation concentrations. 4. Interrelationship with other Projects or Proposals There are four projects or proposals that are interrelated to Pueblo Darn and Reservoir. These include: John Martin Dam, Barrier Darn, City of Pueblo Water Treatment Plant (proposed), and private developments adjacent to Pueblo Reservoir. a. John Martin Darn was the first major project built by the Corps of Engineers in the Arkansas River basin in Colorado. The dam is located on the Arkansas River between Las Animas and Lamar, about 58 miles upstream from the Colorado-Kansas 17