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. . . pre-construction activities in FY 99. o Studies are underway to determine if the Tusher Wash Diversion Dam on the Green River just upstream from the town of Green River, Utah, is a barrier to upstream movement of endangered fishes; and to determine if the Tusher diversion canal siphons endangered fish larvae through the power plant or into irrigation ditches. The results of this study will be used to determine the need for screening at diversion structures. o During March 1997, levees were breached at 3 sites along the Green River_ resulting in 201 f100dable acres. During October 1997, levees were breached at 3 more sites resulting in an additional 153 tloodable acres. Levees are currently (February/March 1998) being breached at 2 more sites for an additional 862 to 1380 acres (depending on flows). Total habitat made available for endangered fishes is 1,216 to 1.734 acres. This fills out the 8-site block design recommended by the Levee Removal Evaluation Group and subsequently approved by the Biology and Management committees. Evaluation studies will be conducted through October. A rep0l1 based on preliminary results of data collected from 1996 through 1998 will be developed by December 1998 for review and evaluation by the Recovery Program. o Thirty-two sites have been screened for contanlinants (including pre- acquisition surveys on 14 private propcrtics; prc-rcstoration survcys on 18 public properties; two candidate growout ponds; and two post-restoration surveys). Floodability assessments have been conducted on 28 sites. o Land acquisition activities have resulted in 14 private landowners that have shown interest in selling easements or titles on approximately 500 acres of floodplain properties along the Green, Colorado, and Gunnison rivers. D. Stocking Native Fishes Goal: A. Status: 0 o B. Produce a sufficient supply of hatchery reared fish to support research and recovery activities. Conserve the genetic diversity present in the wild. During Fall 1997, 3,732 razorback suckers ranging in size from 4-15 inches were stocked in the Gunnison River. These tish were raised in Clymers Pond, Grand Junction. Up to 1,000 razorback suckers may be stocked in the Green River in late Spring 1998. In October 1997,2,164 age-O and ten age-I bony tails with radio transmitters were stocked in Professor Valley near Moab, Utah. Another 3,000 will be stocked in the Spring of 1998. 3