Rest pools provide a rest place for migratory fish to swim upstream. so whether its flow pattern is reasonable or not directly affects the upstream efficiency of fish. Based on the design principle of the mainstream centered in the pool. this paper builds a three-dimensional numerical model to optimize the shape of the vertical slot fishway rest pool. https://www.markbroyard.com/super-value-krowne-18-x84-back-bar-drain-board-and-sink-sale-limited-save/