1931 ANNUAL REPORT, 1930 31 



With the exception of the Thames and Grand River systems, biological 

 surveys have been confined to individual lakes or streams and to counties and 

 townships. When this preliminary pioneer work is completed, more compre- 

 hensive watershed surveys will be in order. 



FiSHWAYS 



During the past two seasons, fifty-nine investigations were made of dams 

 and other barriers across water-courses to determine the extent to which they 

 might obstruct or prevent the free movements of fish and particularly their 

 migration during the spawning seasons. 



Recommendations were based en the principles set forth on pages 18 and 19 

 of the Annual Report and in the section on "Fishways" on pages 51 to 53 in the 

 "Report of a Special Committee on the Game-Fish Situation, 1928-30." 



It was pointed out in the Annual Report for 1929 that fishways are not 

 always practicable, their practicability depending on the height of the dam or 

 falls, conditions in lower and upper reaches respecting the same, and the species 

 of fish affected. 



In order to determine by comparisons whether the construction of the 

 standard fishway, shown on the insert facing page 32, might be improved upon 

 or revised, illustrations and plans of fishways in use in the United States and 

 Canada and information on their success or failure have been collected and are 

 being carefully studied. 



Uniform Regulations on the Great Lakes 



Although there may appear to be no definite outcome of the third conference 

 on uniform regulations on the Great Lakes, which convened at Lansing, Mich., 

 December 5th, 1928, it was understood that each of the states concerned is making 

 studies of various aspects of the problem similar to those being carried on by 

 the Province of Ontario pertaining to the species of fish requiring protection by 

 size limits, closed season or closed areas, and mesh of net. Biological studies 

 of each phase of the question require considerable time, and when sufficient 

 data have been collected and the results noted, another general conference may 

 be warranted. 



On Friday, December 20th, 1929, a conference between State of Michigan 

 and Province of Ontario ofificials was held in Room D, East Block, Parliament 

 Buildings, Toronto, with reference to Lake Huron fisheries. The following 

 were present: 



Wm. H. Loutitt, Chairman, Department of Conservation, Grand Haven, Mich. 



Geo. R. Hogarth, Director, Department of Conservation, Lansing, Mich. 



F. A. W'esterman, Fish Division, Department of Conservation, Lansing, Mich. 



Chas. J. Allen, Fish Supervisor, Commercial Fishing, Department of Conservation, Chebo^-gan, 



Mich. 

 Dr. John Van Oosten, in charge Great Lakes Investigation, U.S. Bureau of Fisheries, Ann Arbor, 



Mich. 

 VVm. J. Lambert, Secretary, Commercial Fishermen's Association, Bay City, Mich. 

 J. A. Rodd, Director of Fish Culture, Department of Marine and Fisheries, Ottawa. 

 D. McDonald, Deputy Minister, Game and Fisheries, Ontario. 

 J. Farrington, Assistant to Deputy Minister, Game and Fisheries, Ontario. 

 H. H. MacKay, Director of Fish Culture and Biologist, Ontario. 

 A. W. McLeod, Supervisor of Hatcheries, Ontario. 

 J. T. Simpson, representing Lake Huron and Georgian Bay F"ishermen's Association. 



The conference dealt chiefly with size limits of fish and mesh of nets, in 

 order to find a basis of uniformity for the State of Michigan and the Province of 

 Ontario on Lake Huron. The proposals continue to be subject to enquiry. 



