The Shehtze area is encompassed by the Keelung and Tamsui Rivers, and the terrain is relatively low-lying. Though farmers in the area do not have to worry about water resources, they suffer frequently from the effects of floods, particularly during the typhoon season.
士林社子地區三面被基隆河及淡水河環繞，地勢比較低，雖然水源不虞匱乏，但曾造成幾次海水倒灌，使當地菜農損失慘重。