▁of ▁the ▁planning ▁for ▁construction ▁of ▁the ▁Pan ama ▁Canal . ▁The ▁Ch ag res ▁River ▁is ▁the ▁Pan ama ▁Canal ' s ▁chief ▁source ▁of ▁water . ▁▁▁ ▁The ▁river ' s ▁upper ▁bas in ▁is ▁covered ▁by ▁dense ▁tropical ▁for ests . ▁To ▁protect ▁that ▁e cos ystem , ▁Pan ama ▁created ▁Ch ag res ▁National ▁Park ▁in ▁ 1 9 8 5 . ▁ ▁References ▁ ▁Further ▁reading ▁ ▁The ▁Ch ag res : ▁River ▁of ▁West ward ▁Pass age ▁by ▁John ▁E aster ▁M inter ▁( part ▁of ▁the ▁R ivers ▁of ▁America ▁Series . ▁ ▁R ine hart ▁& ▁Company ; ▁ 1 9 4 8 ) ▁ ▁External ▁links ▁http :// h ack ing family . com / Land falls / S outh West / ch ag res _ river . htm ▁G at un ▁Lake ▁ ▁Category : R ivers ▁of ▁Pan ama ▁Category : Pan ama ▁Canal ▁Category : Pan aman ian ▁coast s ▁of ▁the ▁Car ib bean ▁Sea ▁Category : D rain age ▁bas ins ▁of ▁the ▁Pacific ▁Ocean <0x0A> </s> ▁Dam ir ch il u ▁( , ▁also ▁Roman ized ▁as ▁Dam ī r ch ī l ū ; ▁also ▁known ▁as ▁Dam ī r ch el ū ) ▁is ▁a ▁village ▁in ▁G ow g ▁T app eh ▁R ural ▁District , ▁in ▁the ▁Central ▁District ▁of ▁B ile h ▁Sav ar ▁County , ▁Ar d abil ▁Province , ▁Iran . ▁At ▁the ▁ 2 0 0 6 ▁census , ▁its