. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. iiiniiiiMiiiiniiiiiiniiliiiiiiiiDMiiiiiiiiiiiiniiHiiiiiMiiiiiiiiiiiiiiiiiiiniiiininiiiHiiiinmi wire screen weir y2"nnesh floating board - / ^u-v log ^ shelter rock rack window spawning water level control structures <&!. FIGURE 1. Physical arrangements at the underwater observation tank in Sagehen Creek, September 4 to October 23, 1959. one foot. Oiie-half-iiic-li mesh screens fitted over these ])revented escape of the fis
. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. iiiniiiiMiiiiniiiiiiniiliiiiiiiiDMiiiiiiiiiiiiniiHiiiiiMiiiiiiiiiiiiiiiiiiiniiiininiiiHiiiinmi wire screen weir y2"nnesh floating board - / ^u-v log ^ shelter rock rack window spawning water level control structures <&!. FIGURE 1. Physical arrangements at the underwater observation tank in Sagehen Creek, September 4 to October 23, 1959. one foot. Oiie-half-iiic-li mesh screens fitted over these ])revented escape of the fish downstream. A weii- was placed about four feet upstream from the tank across the tank ])o()] to confine tlie fish to the tank area. Tlic tank and its uses were described by Needham (1956), and Needham and .loiies (1959). CONSTRUCTION OF SPAWNING BEDS Two spawnin<:' beds were installed ix'sidc llic 1\\«i dowiisl i-caui win- dows on eacli side, 'i'liese wei'e consti'Ucted as follows: 1 wo lo<:s wci'c cut of suitable dianidcr and lcii,i;-1li 1o i-nn lun-i/ontally fi-oiii llic postcrioi- c(i<ie of each downstream window iiiio llic stream-bank on each side. A canvas api'im abont four feet \\i(b' was naih'd on cacb loj; foi- its fidl len:s. Each lofj was ])laced so that the line of nails where the canvas was fastciKMl came in the middle of tlieir npsti'caii) sides. The loys were secnrely fastened to the stream- bed by nailin<z' to stakes driven in the bottom on their downsti-eam sides, by wedges ili'i\-en against the I'ock racks, and by heavy rocks placed on. 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 Ga
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Keywords: ., bookauthorcaliforniadeptoffishandgame, bookauthorcaliforniafish
