IOWA (Cont. ) 



Statewide; continuing; $6,000; C. L. King, J. R. Stoker and F. G. Harker, 

 Leaders. 



Address inquiries to: K. M. Madden, as in No. 1 above. 



5. Lake Manawa Restoration 



Water \was originally supplied to Lake Manawa by the direct inflow of 

 Mosquito Creek and flood flows of the Missouri River. Mosquito Creek was 

 channeled away from the lake and the construction of several flood control reser- 

 voirs on the Missouri River above Lake Manawa has greatly lowered its flood 

 stage. To supply water to the lake a permanent diversion structure was placed 

 in Mosquito Creek and 8, 000 feet of 48-inch underground pipe was laid from the 

 structure to the lake. 



Pottowattamie County; began December 1955, closed November 1956; 

 $303,000; Darrell M. Hill, Leader; reports available. 



Address inquiries to: Glen G. Powers, East 7th and Court, Des Moines, 

 Iowa. 



6. Creation of New Water Areas 



On new areas created for waterfowl, measures are taken to provide habi- 

 tat for game fish. These areas are then stocked. The fishery becomes an 

 important by-product of the waterfowl areas. 



Statewide; began 1953, continuing; L. P. Bailey and C. L. King, Leaders; 

 reports available. 



Address inquiries to: Lester F. Faber, as in No. 2 above. 



7. Aquatic Weed Control 



Surveys are conducted to determine the nature and extent of weed growths 

 in lakes as well as the cost involved and need for control. Weed control oper- 

 ations are carried out under State direction. Chemical control has been found 

 to be most economical and effective. 



Statewide; began June 1955, continuing; $10,000; E. T. Rose, F. G. 

 Harker and C. L. King, Leaders; reports available. 



Address inquiries to: E. B. Speaker, East 7th and Court, Des Moines, 

 Iowa. 



8. Natural Nursery Lakes 



The objective is production of advanced walleye and northern pike finger - 

 lings for statewide predator fish stocking to directly aid public fishing and 

 species control efforts. Growth curve analysis is used to dictate frequency of 

 fingerling removal. 



Statewide; continuing; $16,000; F. G. Harker and Tom Moen, Leaders. 



Address inquiries to: K. M. Madden, as in No. 1 above. 



9. Creel Census of Natural Lakes and Mississippi River 



The objective is to deternnine the success of anglers on the Mississippi 

 River and several major Iowa lakes. Nine creel census clerks gather catch 

 statistics including partial and total creels. Aerial counts of bank and boat 

 fishermen are taken co-operatively by Iowa, Illinois, and Wisconsin on the 

 Mississippi River in addition to the ground contacts. 



Statewide; revised April 1955, continuing; $20,000; E. T. Rose, Tom 

 Moen and R. E. Cleary, Leaders; reports available. 



Address inquiries to: E. B. Speaker, as in No. 7 above. 



10. Exploratory Fishing on Mississippi River 



The objectives are to determine population trends of the principal game 



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