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三、产卵场长寿湖水库夏、秋库水上涨,冬、春逐渐降落,水位落差规律地成周期性变化.枯水季节(8月——次年4月)石膏滩、新滩、擂鼓滩等未被淹没,由原龙溪河的山水常年不断而形成流水区.洪水季节(5-7月)由于从擂鼓滩、新滩直到石膏滩约5公里的地段,河床落差达20公尺左右,因而流速很大(估计滩口最大流速可达4公尺/秒),且因库底不平,滩下流速变化多端,形成各种直流水、?水、
Third, the spawning ground Changshou Lake Reservoir summer, autumn reservoir water rose, winter and spring gradually landed, the water level fall into the cyclical changes regularly. Dry season (August - April next year) Gypsum Beach, the new beach, The floodplain and the floodplain are not submerged, and the rivers and streams of the original Longxi River continue to form a stream area during the flood season (May-July). Due to the riverbed drop of about 20 kilometers Meters, so the flow rate is very high (the maximum velocity of the estuary is estimated to be up to 4 meters / second). Due to the uneven bottom of the reservoir, the flow velocity at the beach is varied, forming various kinds of direct current water,