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<br />002337
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<br />resources of. the Delta and would set the stage for rehabilitation of the
<br />salmon runs in San Joaquin River which have been destroyed by flow
<br />reversals, pollution blocks, and low flows.
<br />
<br />The Bureau and other Inter ior agencies have recently participated .in
<br />'several meetiugswith interested organizations to'assistin implementing
<br />the'Secretary's recommendations in the October 1964 report, "Action
<br />Program for Resources Development, Truckee and Carson River Basins,
<br />California-Nevada." Bureau personnel have continued investigations
<br />during the quarter incooperatibnwith the Nevada Fish and Game Depart-
<br />ment to establish the best procedure for restoring and maintaining the
<br />Pyramid Lake fishery.
<br />
<br />Cooperat ive Activities - - State
<br />
<br />In cooperation with the Nevada Fish and Game Department, the Bureau
<br />conducted serology and dis eas e studies of Lahontan cutthroat at Summit
<br />Lake, Nevada. Serology studies revealed the Summit Lake cutthroat to
<br />be one of the.purest strains of trout inexistence.
<br />
<br />General Operations -- Water
<br />
<br />Negotiations have been completed for the adoption of annual contracts.
<br />between the Bur.eau and the Irrigation Districts for delivery of water to
<br />the Sacramento refuge group. The Sacramento Valley is as sured of a
<br />good water supply this year with Shasta Dam full at this time.
<br />
<br />Two new wells recently drilled at Kern-Pixley refuges and now equipped
<br />with pumps are producing approximately 2,000 to 2,200 gallons per min-
<br />ute or nearly double the supply of the older wells. This is due to some-
<br />what deeper drilling together with a greater length .of pipe perforations ,.
<br />as suggested by local drillers. Water was expected this spring from
<br />PosoCreek, but the flow stopped about two miles short of the refuge.
<br />Several hundred acre -feet of water have been delivered to Pixley through
<br />the Deer Creek Channel. This is Clas s 2 water .purchased from the
<br />Irrigation District at a cost of $3.50 an acre-foot.
<br />
<br />We have been faced with critically high water levels all spring.at both
<br />Tule Lake a.nd Lower Klamath. The Williamson River, which feeds
<br />Klamath Lake and the Upper Klamath Refuge, has exceeded all previous
<br />records for daily dis charges of water into the lake. At the present time
<br />everything' seems to be under control, and Lower Klamath units are
<br />being dewateredas rapidly as possible. We will not, however, be able
<br />to farm Unit 12 this year. Damage from high water has been estimated
<br />at $266,000.
<br />
<br />12
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