412 



U. S. BUREAU OF FISHERIES 



A great improvement effected at the Louisville (Ky.) station was 

 the replacement of the old electrical pumping system which had 

 deteriorated to a point where it was very expensive to operate and was 

 not dependable. Other improvements included painting and repair- 

 ing of buildings and improvements to ponds. The output of fish was 

 materially increased over the previous year. This station concen- 

 trates upon the smallmouth bass, it being one of the chief sources of 

 supply for this species and 475,000 bass were distributed. 



At the Warm Springs (Ga.j station general improvements were 

 carried on. The output of fish was approximately of normal pro- 

 portions. 



At the Vaidosta (Ga.) station, only a small output of fish was ob- 

 tained because of the fact that the water supply could not be properly 

 controlled. This establishment has many unusual features, and 

 P. W. A. and C. W. A. funds were expended for improvements and 

 developments w^hich will give more adequate control of the available 

 water supply and provide adequate drainage to wells. 



The Fairport (Iowa) biological station was continued in operation 

 for strictly fish-cultural purposes and enjoyed a successful season. 

 Some rescue work was carried on in local waters by the station force. 



The Crawford (Nebr.) station handling both trout and warm- 

 water fish was able to provide additional pond space and effect other 

 improvements while turning out a successful production of pond fish. 



MISSISSIPPI RIVER TERRITORY 



Diverse activities including fisheries administration in the Upper 

 Mississippi Wild Life Refuge, rescue or salvage activities, propagation 

 of trout and pond fish, and immediate supervision of the fish hatcheries 

 at Lake Mills, Wis., and Rochester, Ind., come under the jurisdiction 

 of the district supervisor located at the La Crosse (Wis.) station. 

 At La Crosse, the trout culture was carried on successfully although 

 there were temporary outbreaks of disease. A large number of trout 

 were furnished for cooperative nurseries in Minnesota and Wisconsin. 

 Another noteworthy accomplishment was the successful production of 

 bass in a 5-acre pond located at the main station. This pond pro- 

 duced over 70,000 fingerling bass. Other semicontrolled ponds lo- 

 cated in the refuge failed to be as productive owing to the fact that 

 they were overflowed, and coarse or predatory fish gained access. 

 Rescue activities have been discussed elsewhere in this report. The 

 substations located at Marquette and Bellevue, Iowa, were operated 

 by the Iowa Conservation Commission. 



The Homer (Minn.) substation was utilized as a base for rescue 

 operations, and also for the overhauling and maintenance of equip- 

 ment, particularly boats, trucks, etc. 



At Lake Mills, Wis., 7 new ponds were excavated having an area of 

 1 acre each and the necessary water pipe supply line laid. Other 

 improvements were effected through the use of P. W. A. and C. W. A. 

 allotments. A limited number of bass were produced in the ponds, 

 but owing to lake conditions they were not in proper condition for 

 fish cultural use. Trout culture was attempted, but the results were 

 unsatisfactory owing to improper water supply apparently. 



During the year active construction was under way at the new 

 Rochester (Ind.) station, the work being performed successively under 



