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<br />tHl291S
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<br />Cadastral survey work was increased over the level of previous
<br />years, and urgent priority work associated with the construction author-
<br />ization for the Garrison Diversion Unit in North Dakota ,was well advanced,
<br />in spite of difficulties in recovering original survey monuments. Work
<br />was scheduled on the Oahe Unit in the Dakotas, and Little Blue Unit and
<br />Mid-State in Nebraska.
<br />
<br />Fish and Wildlife Service
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<br />Bureau of Sport Fisheries and Wildlife efforts continued in planning
<br />for fish and wildlife values from water development projects. A number
<br />of Soil Conservation Service "566" projects, Corps of Engineers proposals,
<br />Bureau of Reclamation as well as other Federal projects were under study,
<br />amounting to about 140 in all.
<br />
<br />Fish and wildlife development plan reports for all 36 major Fish
<br />and Wildlife Management Areas of the Garrison Diversion Unit have now
<br />been completed and of the 18 major areas proposed in the Oahe Unit Plan,
<br />reports have been completed on all but 2. In fact, some 47 reports were
<br />completed and released during the year.
<br />
<br />The North Central Reservoir Investigations Office occupied a new
<br />laboratory near the Oahe powerhouse in March 1968, and has partially com~
<br />pleted experimental facilities for work on fish embryos and larvae. Data
<br />derived from this installation will enable fishery managers to predict
<br />the effects of various environmental conditions on reproduction. Initial
<br />studies will involve northern pike, yellow perch, and white bass.
<br />
<br />Bureau of Commercial Fisheries work in the Missouri River Basin has
<br />documented a vast and largely unexploited commercial fish resource with-
<br />in the Missouri Basin and is continuing efforts toward methodology for
<br />its utilization. Buffalofish, carp, and several species of catfish are,
<br />and will continue to be, of importance to the commercial fishery.
<br />
<br />Work was done during the year with regard to the reasons for declin-
<br />ing populations of northern pike in the Missouri River main stem impound-
<br />ments, and as a result some experimental sub impoundment work will be
<br />undertaken at selected locations.
<br />
<br />Bureau of Outdoor Recreation
<br />
<br />During the fiscal year just passed, Bureau of Outdoor Recreation
<br />review procedures were expanded, with closer scrutiny of water develop-
<br />ment projects involving urban considerations.
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<br />Some 20 reports, concerning proposals for recreation programs, were
<br />completed during fiscal year 1968. Major work was done in Nebraska and
<br />Kansas, with six other Basin States receiving attention. Reviews were
<br />accomplished principally for the Corps of Engineers, the Bureau of
<br />Reclamation, and the Bureau of Sport Fisheries and Wildlife. Reports also
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