. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. 96 DEPARTMENT OF FISH AND GAME. Inlet to a high Sierra lake, Rose Lake, Fresno County. The improve- ment of such streams is a function of our experimental back-country fish management crew working on Dingell-Johnson Project F-3-R. However, even in the case of waters for which we had good initial data on which to base a policy, we soon found that initial surveys were not enough for continuous management. Ten years after a survey had be
. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. 96 DEPARTMENT OF FISH AND GAME. Inlet to a high Sierra lake, Rose Lake, Fresno County. The improve- ment of such streams is a function of our experimental back-country fish management crew working on Dingell-Johnson Project F-3-R. However, even in the case of waters for which we had good initial data on which to base a policy, we soon found that initial surveys were not enough for continuous management. Ten years after a survey had been made, some factor such as fishing intensity may have changed so much that the original yearly stocking allotment no longer provided good fish- ing. Or, our original choice of species or estimate of the number of trout to be planted may have been faulty and should have been changed. But, and this is one of our basic problems, we usually didn't know that the policy should be changed, simply because we hadn 't visited the lake again and because no one had told us that the lake needed attention. Now, if you have only a few lakes to manage you can check them fre- quently and adjust your management to changing conditions. But our problem lies in trying to manage hundreds of waters without having. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original California. Dept. of Fish and Game; California. Fish and Game Commission; California. Division of Fish and Game. [San Francisco, etc. ] State of California, Resources Agency, Dept. of Fish and Game
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