▁San ▁Jer ón imo . ▁The ▁river ▁is ▁approximately ▁ 8 0 ▁kil ó metros ▁( 5 0 ▁miles ) ▁long . ▁After ▁leaving ▁the ▁municipality ▁of ▁Am ac uz ac , ▁the ▁river ▁goes ▁to ▁Pu ente ▁de ▁I xt la ▁by ▁Río ▁Chal ma ▁and ▁Río ▁T emb em be , ▁joining ▁other ▁rivers ▁to ▁feed ▁Río ▁Me z cala ▁and ▁form ▁the ▁B als as ▁River . ▁There ▁is ▁an ▁important ▁dam ▁in ▁Am ac uz ac ▁at ▁Ran cho ▁Nue vo . ▁The ▁dam ▁has ▁a ▁capacity ▁of ▁ 2 ▁million ▁cub ic ▁meters ▁( 7 0 , 0 0 0 ▁feet 3 ). ▁ ▁Cl imate ▁The ▁municipality ▁of ▁Am ac uz ac ▁has ▁a ▁hum id ▁tropical ▁climate , ▁with ▁an ▁annual ▁average ▁temperature ▁of ▁ 2 5 ° C ▁( 7 7 ° F ), ▁a ▁ra inf all ▁of ▁ 1 , 1 8 7 ▁mill im eters ▁( 4 7 ▁inches ) ▁per ▁year , ▁and ▁its ▁ra iny ▁season ▁is ▁from ▁June ▁to ▁October . ▁ ▁Flora ▁& ▁Fa una ▁Veg et ation ▁includes ▁c az ah uate ▁( a ▁tree ▁that ▁measures ▁ 1 5 ▁to ▁ 5 0 ▁feet ▁high ▁and ▁has ▁long ▁leaves ▁and ▁white ▁flowers ▁), ▁ce iba , ▁cu aj il ote ▁( a ▁th orn y ▁tree ), ▁te pe hu aje ▁( a ▁tree ▁that ▁measures ▁between ▁ 2 5 ▁and ▁ 4 0 ▁feet ), ▁chap uli xt le ▁( a ▁medic inal ▁plant ),