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. . . 2 irrigated lands, bringing the total to 11 blocks within the project. Every block is divided into fields, or water-delivery units, with access roads and individual sprinkler systems. Water for the irrigation activities will be brought from Navajo Reservoir on the San Juan River through tunnels, siphons, open concrete-lined canals, and pipelines. All of the infrastructure to deliver the water from Navajo Dam to the project boundary is sized for full development and is in place. Completion of NIIP will require further development. and expansion of water delivery systems within the project itself. One pumping plant (Kutz) exists to lift the water from the main delivery network to open laterals to the fields. Completion of NIIP will require the addition of two more pumping plants, Gallegos and Moncisco. One regulating reservoir will be required to meet peak irrigation demand during the summer when the total irrigated area exceeds about 97,000 acres. Two alternative sites have been selected and are under investigation for feasibility. The active storage requirement for either reservoir option is 7,735 af; either dam would be a zoned earth embankment dam with concrete spillway. The acreage through Block 8 that will be completed and in full operation by 2002 totals 76,481 acres. The currently authorized depletion for these first eight blocks is 149,420 acre-feet (af), requiring 8,000 acres of conservation reserve and additional conservation measures for irrigation of all acreage in the first eight blocks. Included in the 149,420 af depletion allowance is 16,420 af of depletion transferred from other Navajo Nation projects to the NIIP. Completion of NIIP will result in agricultural development of 110,630 acres. Future planning excludes conservation acreage and plans for full irrigation on the aggregate 110,630 acres. Hence, the current proposed action is to fully develop the agricultural lands within NIIP, removing the acreage restrictions of the previous consultation. This action will increase annual depletions from the San Juan River by about 120,580 af on average under equilibrium conditions and by about 137, 580 af on average until return flows reach equilibrium. This depletion will require an average annual diversion of about 337,500 af. The proposal for full development of NIIP also includes project elements designed to support the recovery of the endangered Colorado pikeminnow and razorback sucker. In 1998, three fish rearing ponds were constructed within the boundaries of NIIP. Ojo Pond was constructed to accommodate up to 1 O,OOO.early life stage razorback suckers transferred from the Lower Colorado River. The pond is used for rearing of these fish to a size suitable for stocking in the San Juan River as part of the razorback sucker augmentation plan of the San Juan River Recovery Implementation Program. The pond has a surface area of about 2.4 acres. It was constructed by raising an existing earthen dam on a tributary of Ojo Amarillo that collects seepage and runoff water from NIIP lands. The shallow areas were deepened, a fish screen was installed and a boat ramp constructed to facilitate fish harvest. The water level can be lowered by about 2.0 feet for harvesting fish by removing flash boards in the outlet structure. Avocet Ponds were also constructed in 1998 but have not yet received fish. The 2-cell configuration covers a total area of about 7.5 acres. Water is supplied from a turnout on the NIIP water supply system. Each cell can be filled independently and each has an emergency overflow. Each cell has the capacity of at least 10,000 fish. Water levels will be maintained by releases from the NIIP water supply system with water requirements a '.