The Cetina River, the largest river in central Dal-matia (105 km) springs in the foothills of the Dinara Mountains, suppling sufficient water for all eight sources. Its deepest source lake is 130m.
This blue spring irrigates Dalmatia, as well as providing light to the region with its five hydrodams. From Vrlika to Sinj, the Cetina River is calm and tame, while becoming more lively downstream of Trilj. At Zadvarje, the river becomes wild — it foams and froths, likely sensing the nearness of its mouth and because it had to leave behind its spring and the dear endemic trout and bludgeon in its lake-Just prior to the union with the beautiful Adriatic Sea, the river does well again — it gives life to river eels, which the people of Omis are so proud of.