. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. 212 CALIFORNIA FISH AND GAME 23 inches deep on the undercut side. Even though most of the flow goes under the dam, the structure docs maintain a good pool. Although undercut, this dam is solidly attached to both banks, well anchored by willows, and shows no evidence of deterioration. 5. Structure 38. One-log dam with 12-foot port. Holes under the dam in both 1936 and 1937 were repaired in a total of ten and one-half hours. Gravel fill
. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. 212 CALIFORNIA FISH AND GAME 23 inches deep on the undercut side. Even though most of the flow goes under the dam, the structure docs maintain a good pool. Although undercut, this dam is solidly attached to both banks, well anchored by willows, and shows no evidence of deterioration. 5. Structure 38. One-log dam with 12-foot port. Holes under the dam in both 1936 and 1937 were repaired in a total of ten and one-half hours. Gravel filling in the pool above may be largely responsible for the fact that the dam has remained intact and operating. A good pool below is the result of water falling 10 inches from the dam crest. This dam is in no danger of washing out because a dense mat of willow roots winds through and around the ends of it. The willows are most effective anchors, as well as sources of food and cover for fish in the stream below. Log Deflectors Five devices of this type were built in 1935, and five were present in 1953, although not all were operating. Structures 17, 18, and 19 are shown in Figure 9. They are still in excellent condition. Some repairs were made during 1936 and 1937, when trampling by cattle threatened to break down the banks. However, little change has oc- curred here since 1936 insofar as damage to the structures is con- cerned. Two of the devices are operative only in high water. All are on a bend in the stream and successfully retard bank erosion during peak winter FIGURE 9. Three log deflectors in 1953. Structure 17 is in the foreground and has largely diverted the stream to the left. Structure 18 in the middle distance and 19 in the back- ground have been undercut and have lost some of their effectiveness. Photograph by ihe Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration a
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