. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. V-—^-N - FIGURE 1. Map showing location of Big Bear Lake, drainage basin, sampling sites, and major tributaries. Geographic and Morphometric Description Big Bear Lake occupies a relatively small, east-west oriented basin (Figure 1). It was created in 1885 by the construction of a single arch dam across Bear Creek, a tributary of the Santa Ana River, and was enlarged in 1911 by a new, higher dam. At maximum pool it now has a surface ar
. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. V-—^-N - FIGURE 1. Map showing location of Big Bear Lake, drainage basin, sampling sites, and major tributaries. Geographic and Morphometric Description Big Bear Lake occupies a relatively small, east-west oriented basin (Figure 1). It was created in 1885 by the construction of a single arch dam across Bear Creek, a tributary of the Santa Ana River, and was enlarged in 1911 by a new, higher dam. At maximum pool it now has a surface area of km ^ is km long, averages about km in width, and is m deep. At capacity, it contains X 10 * m ' of water. The ratio of lake surface area to drainage area is about 1:8. The morphology of Big Bear Lake (Table 1) was quite variable during this study. The drainage basin encompasses km ^ It is drained by more than a dozen mostly intermittent streams, most of which are less than 3 km in length. Grout Creek, the largest tributary, is only km long. The average height of the drainage basin is 2,200 m above mean sea level. Runoff, including snow melt, is the main source of water for Big Bear Lake. The average seasonal precipitation in the drainage area is 61 cm, but varies from cm at the dam to 31 cm at the east end of the lake. Air temperature varies from a summer high of 30°C to winter lows below — 15°C. The lake surface freezes during most winters. Spring and summer are characterized by afternoon winds out of the 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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