WISCONSIN (Cont. ) 



7. Evaluation of Watershed Stabilization Procedures With Special Reference to 

 Trout Populations. (FA: F-4-R) 



Objectives of the project are to determine distribution, abundance and 

 changes in the fish populations of portions of streams where watershed stabili- 

 zation procedures are in operation; to determine distribution, abundance and 

 changes in important food items of bottom organisms in these test streams; 

 and to deternnine changes in water quality, degree of flooding and rate of sil- 

 tation in watersheds studied. 



Dane County; began December 1953, to close 1958; $25, 000; Oscar M. 

 Brynildson, Leader. 



Address inquiries to: Conservation Department, Area V Headquarters, 

 Nevin Hatchery, Madison, Wis. 



8. Yellowstone Lake Development. (FA: FW-l-D) 



A headwater drainage area of 42.87 square miles of the Yellowstone River 

 will be used to furnish water for a 450-acre impoundnnent. The dam will be 

 of concrete and earth-dike construction 1, 300 feet in length with a head of ap- 

 proximately 15 feet. It will be completely drainable by appropriate concrete 

 control structures. 



The impoundment will be managed as a combination fish, game, and water- 

 fowl project with considerable public use lands in the area. The impoundment 

 is located in the "driftless" area of Wisconsin which has very few natural lakes. 



Lafayette County; began 1952, to close March 1954; $340,000; Elmer F. 

 Herman, Leader. 



Address inquiries to: Conservation Department, as in No. 7 above. 



9. Watershed Management. (FA: F-l-D in part) 



Streams have been selected as demonstration areas in which proper land 

 use and water stabilization is encouraged. Stream fencing and channel improve- 

 ments are constructed to improve habitat for trout. Cooperative projects between 

 landowners, associations, and public agencies are encouraged. 



Statewide; began 1951, indefinite; $175, 000; D. John O'Donnell, Leader; 

 reports available. 



Address inquiries to: Conservation Departn^ent, as in No. 7 above. 



10. Fish Ecology Studies, With Special Reference to Carp and Largemouth Bass. 

 (FA: F-3-R) 



Delafield pond studies are to determine the inhibiting effects of carp upon 

 the natural reproduction of largemouth bass, bluegills, and crappies, in ponds 

 stocked with adults of each species in various combinations. Observations on 

 spawning activity are made and the ponds are drained periodically. 



The Brown's Lake study includes a creel census and a population estimate 

 permitting an analysis of the rate of exploitation of largemouth bass in this 

 lake. Scales are collected from angler-caught fish and fish taken by seining to 

 allow a determination of sampling differences between the two methods concern- 

 ing the size and growth rate of the fish. 



Southeastern Wisconsin; began 1953, to close 1958; $20, 000; Donald F. Mraz, 

 Charles W. Threinen, Leaders; reports available. 



Address inquiries to: Donald F. Mraz, Conservation Department, Delafield, 

 Wis. 



11. Lake Mapping. (FA: F-2-R)* 



Objective of the project is to provide maps of lakes which are to be inven- 

 toried. Most of the n-iapping will be done during the period of the ice cover. 



Statewide; began January 1953, indefinite; $10,500; Arthur Ensign, Leader. 

 Address inquiries to: Conservation Department, Madison 2, Wis. 



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