渠道全長77公里,有支斗渠137條,灌田9.5萬餘畝。現今渠道全長116公里,灌溉面積35.1萬畝,最大引水量45立方米/秒[1]。
明嘉靖四十一年(1562年),寧夏巡撫毛鵬令中衛文武職官帶本衛丁夫三千人,在舊口之西6里,開鑿新口,月余渠成,以「渠美利民」之意,將蜘蛛渠易名為「美利渠」。
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