▁de ▁Ros ales , ▁a ▁name ▁that ▁acquired ▁popular ▁roots ▁and ▁how ▁it ▁is ▁still ▁known ▁to ▁this ▁day . ▁ ▁Tow ards ▁the ▁end ▁of ▁the ▁ 1 9 th ▁century ▁and ▁the ▁first ▁half ▁of ▁the ▁ 2 0 th ▁century , ▁the ▁importance ▁of ▁Ros ales ▁in ▁the ▁region ▁decl ined ▁to ▁the ▁benefit ▁of ▁the ▁nearby ▁Villa ▁of ▁Me o qui , ▁where ▁the ▁central ▁railway ▁passed ▁through . ▁But ▁in ▁the ▁second ▁half ▁of ▁the ▁ 2 0 th ▁century , ▁the ▁region ▁received ▁a ▁great ▁boost . ▁In ▁the ▁ 1 9 4 0 s , ▁the ▁federal ▁government ▁built ▁the ▁Francisco ▁I . ▁Mad ero ▁Dam , ▁better ▁known ▁as ▁the ▁Las ▁V ír gen es ▁Dam , ▁just ▁five ▁kilom eters ▁up stream ▁from ▁Ros ales ▁and ▁which , ▁together ▁with ▁other ▁flo od ▁control ▁structures ▁recently ▁built , ▁created ▁Ir rig ation ▁District ▁ 0 5 , ▁today ▁one ▁of ▁the ▁most ▁product ive ▁agricult ural ▁zones ▁in ▁the ▁state ▁of ▁Ch ih u ah ua . ▁( The ▁Municip ality ▁of ▁Del ici as , ▁formed ▁in ▁ 1 9 3 5 ▁from ▁parts ▁of ▁the ▁Santa ▁Cruz ▁de ▁Ros ales ▁and ▁the ▁Me o qui ▁municipal ities , ▁became ▁the ▁greatest ▁benef ici ary ▁of ▁this ▁water ▁project .) ▁ ▁On ▁January ▁ 2 2 , ▁ 1 9 9 2 , ▁a ▁new ▁dec ree ▁of ▁the ▁Congress ▁of ▁Ch ih u ah ua ▁restored ▁the ▁original ▁name ▁of ▁Santa ▁Cruz