Professional paper

Hydrological analysis of the karstic Čikola River

Ognjen Bonacci orcid.org/0000-0002-7123-3421 ; Faculty of Civil Engineering, Architecture and Geodesy, University of Split, Split, Croatia
Josip Terzić orcid.org/0000-0003-3692-8305 ; Croatian Geological Institute, Zagreb, Croatia
Tanja Roje-Bonacci orcid.org/0000-0002-1751-0045 ; Faculty of Civil Engineering, Architecture and Geodesy, University of Split, Split, Croatia

Abstract

The paper describes a hydrological analysis of the processes occurring along the course of the Čikola River based on discharge measurements at three water gauging stations (Ružić, Drniš and Ključice), precipitation measurements at four stations (Knin, Drniš, Otavice and Muć) as well as air temperatures measurements at the meteorological station Drniš. The paper presents new considerations regarding the hydrology of the karst river Čikola. It has been established that the river section between the stations Drniš and Ključice shows signifi cant water losses in the dry period. It appears that that the losses due to water sinking into the karstic underground are absent or rare and insignifi cant in the area between the stations Ružić and Drniš. It has been further established that water drying out in the Čikola section from Ružić to Drniš is slightly more frequent in the past fi fteen years; however, this fi nding should be verifi ed by more reliable measurements. It has been determined that the Čikola source is a karstic spring with a limited maximal output capacity. By implementing the Turc method, it has been estimated that the surface of the Čikola river basin to the station Ružić equals approximately 300 km2.

Keywords

karst hydrology; river basin surface; water losses; Čikola River (Croatia)

Hrčak ID:

214856

URI

https://hrcak.srce.hr/214856

Publication date:

27.12.2018.

Article data in other languages: croatian

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