Identification of the predominant recharge/discharge zones of the Zagreb aquifer using the analysis of the flow duration curves of Sava river and groundwater levels : master’s thesis

U ovom radu analizirani su vodostaji rijeke Save i razine podzemne vode primjenom krivulja trajanja. Cilj rada bio je odrediti zone zagrebačkoga vodonosnika u kojima rijeka Sava pretežito prihranjuje ili drenira podzemne vode. Pomoću karti ekvipotencijala za niske i srednje vode određene su hiporheične zone zagrebačkoga vodonosnika. Odabrano je 45 piezometara u okolici rijeke Save te su, uz pomoć 22 hidrološke postaje, napravljena 22 profila na kojima su izvršene analize. Statistički su obrađeni odabrani piezometri i hidrološke postaje za razdoblje od 2003. do 2012. godine. Izrađene su krivulje trajanja vodostaja i razina podzemne vode koje su prikazani u radu, zajedno s tablicama za dobivene rezultate po pojedinim godinama analiziranog razdoblja.Abstract: In this thesis water levels of Sava River and groundwater levels were analyzed, using the flow duration curves. The main goal was the identification of the predominant recharge or discharge zones of the Zagreb aquifer. Hyporheic zones of the Zagreb aquifer were determined using the head contour maps for low and medium water levels. In the surrounding area of Sava River, 45 piezometers were chosen, and with the help of 22 hydrological stations, 22 cross-sections were made on which the analysis was performed. All of the data from the piezometers and hydrological stations, from the year 2003 until 2012, were statistically analyzed. Flow duration curves were made and shown in this thesis, along with the tables of obtained results from the certain years