. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. A sportfishing dock at Noyo Harbor, Fort Bragg. The small boats are typical of those used by salmon fishermen in the ocean. (Fish and Game Photo by C. H. Meacham) 5. To provide information for evaluating the effects of proposed and existing water develop- ments on salmon and steelhead in the north- coastal portion of the State. Work Started in 1955 During the biennium the growth of young steelhead at Cedar Creek Station progressed as
. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. A sportfishing dock at Noyo Harbor, Fort Bragg. The small boats are typical of those used by salmon fishermen in the ocean. (Fish and Game Photo by C. H. Meacham) 5. To provide information for evaluating the effects of proposed and existing water develop- ments on salmon and steelhead in the north- coastal portion of the State. Work Started in 1955 During the biennium the growth of young steelhead at Cedar Creek Station progressed as expected. Mark- ing of approximately 170,000 fish at the station started on December 19, 1955, and continued through Decem- ber 21st, when torrential rains caused the river to rise over the rearing ponds and wash away all the fish. At that time 75,186 marked steelhead and approxi- matelv 90,000 unmarked fish entered the river. At the close of the biennium approximately 500,000 voung steelhead were in the rearing ponds and the losses from the flood had been replaced. A great deal of time was devoted to getting data on the Trinity River for population estimates. This information was needed in order to make recommen- dation for facilities to maintain the important salmon and steelhead fisheries in the face of the huge water development project recently begun at this stream. flow Measurements Water flow measurements, in conjunction with gravel analyses, were made to develop methods for determining an optimum flow over a spawning area. These methods are being applied in the Trinity River and will be applied in the Eel River and other coastal streams. Information on optimum water flows is essen- tial, in order to recommend the proper water releases from reservoirs constructed on salmon and steelhead streams. Fish sampling on Alendocino coastal streams has revealed that the present summer closure on these streams is a sound regulatory measure. This closure is designed to assure a max
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