MICHIGAN (Cont. ) 



70. Rifle River Watershed Development. 



This is an experimental land use program designed to improve fishing conditions 

 by the installation of practices and/or devices on both the uplands and the stream 

 channels of the watershed. Work includes: stream improvement structures 

 (deflectors, covers, dams, etc.); bank stabilization; streamside fencing. The 

 upland work includes; tree planting for shade and erosion control; grass water- 

 ways; small impoundments; and general farm program conservation measures. 



Rifle River north of Michigan Highway 55 in Ogennaw County; planned through 1953; 

 $25,000. 



Address correspondence to: Wayne H. Tody, Watershed Management Supvr. , Water- 

 shed Mgt. Office, Dept. of Conservation, Lansing 13, Mich. 



Michigan State College 



1. Farm Pond Management. 



Species of pond fish not presently occurring in the State will be introduced in certain 

 ponds. Desirable stocking ratios and species composition will be determined, and 

 through improved methods of harvesting and processing, better utilization of fish 

 produced may be brought about. 



Ponds in southern area of Mich. ; Dept. of Conservation cooperating; began 1946, 



continuing; reprints of reports available. 

 Address correspondence to: Robert C. Ball, Dept. of Fisheries & Wildlife, 



Mich. State College, East Lansing, Mich. 



2. Production and Harvesting of Bait Fish. 



Methods are being developed for rearing and harvesting bait fish, and pond owners 

 are being encouraged to use artificial ponds and natural water areas as a source 

 of supplemental income through raising bait fish. Pituitary hormones are being 

 used to permit collection of eggs of stream and lake fish that will not spawn in 

 ponds. 



Ponds in southern Mich. ; Dept. of Conservation cooperating; began 1946, continuing; 



reprints of reports available. 

 Address correspondence to: Robert C. Ball, Dept. of Fisheries & Wildlife, Mich. 



State College, East Lansing, Mich. 



3. Fertilization of Natural Lakes. 



This project is a study of biological changes resulting from application of inorganic 

 nutrients to warm water and trout lakes. Included are evaluation of increases in 

 plankton, bottom fauna, fish and probability of winter-kill under the snow and ice 

 cover. Relationships of calcium to lake productivity is being studied. 



Statewide; Dept. of Conservation cooperating; began 1947, continuing; reprints avail- 

 able. 



Address correspondence to: Robert C. Ball, Proj. Ldr., Dept. of Fisheries and 

 Wildlife, Mich. State College, East Lansing, Mich. 



54 



