File:California fish and game (20325642418).jpg

Title: California fish and game
Identifier: californiafishga67_2cali (find matches)
Year: [1] (s)
Authors: California. Dept. of Fish and Game; California. Fish and Game Commission; California. Division of Fish and Game
Subjects: Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons
Publisher: (San Francisco, etc. ) State of California, Resources Agency, Dept. of Fish and Game
Contributing Library: California Department of Fish and Game
Digitizing Sponsor: Internet Archive

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Text Appearing Before Image:
SPAWNING REQUIREMENTS OF ALABAMA SPOTTED BASS 119 with riprap and boulders. The substrate is primarily soft mud, although some areas in this cove have a sand and gravel bottom. The remaining shoreline of the Lake is decomposed granite or mud.
Text Appearing After Image:
FIGURE 1. Lake Perris, Riverside County, showing substrate types and location of willows and study transects. The upstream side of the dam is riprapped with rock ranging from 0.5 m to 1.5 m in diameter. Angler access ramps, composed of small rocks and gravel 5 to 10 cm in diameter, are situated at regular intervals along the upstream face. These ramps are approximately 5-m wide and extend from the crest of the dam to below the minimum pool elevation. The Lake has a maximum depth of 35 m and a mean depth of 15 m. Surface water temperatures typically range from 10°C to 28°C. Water transparency, as measured by secchi disk, varies from 3 m in winter to less than 1 m in summer, averaging about 1.5 m. Lake stratification begins in late March and is complete by May; by early summer dissolved oxygen is almost totally depleted below the thermocline (usually 4 to 8 m below the water surface). Lake Perris, a water supply reservoir that receives all its water via aqueduct, typically fills during November to April and drains from April through October. This pattern did not prevail, however, during the period of our study. During the 1977 spawning season, no water was released, and the water level dropped less than 20 cm, primarily due to evaporation. During the 1978 spawning season, the Lake received water from 1 April to 30 April and the water level rose 2.5 m. Beginning 1 May however, water release was greater than inflow and the water level dropped 1.1 m by the end of May.

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