Identification of predominant ground water flow directions on wellfield Kosnica : master’s thesis

U diplomskom radu analizirani su dominantni smjerovi toka podzemne vode na području vodocrpilišta Kosnica izradom karata hidroizohipsi za visoke i niske vode, krivuljama učestalosti i trajanja te statističkom analizom. Pomoću programa Surfer i ArcGIS izrađene su karte hidroizohipsi za visoke i niske vode na području vodocrpilišta Kosnica. Obrađeni su podaci razina podzemnih voda za razdoblje od 2007. do 2009. godine za tri piezometra: PPČ-16, OB, ČP-5, te su vršene usporedbe razina podzemnih voda za svaki pojedini piezometar. Podaci su statistički obrađeni u MS Excel i prikazani su dijagramima. Provedenom analizom razina podzemne vode u karakterističnim piezometrima u razdoblju od 2007. do 2009. godine, zaključuje se da je na području vodocrpilišta Kosnica dominantni rezultantni smjer toka podzemne vode sjeveroistok, a što je u skladu i s generalnim smjerom toka podzemne vode na cijelom području zagrebačkog vodonosnika koji je generalno paralelan rijeci Savi.Abstract: This thesis analyzes dominant flow direction of groundwater on the site of the Kosnica wellfield. The analysis was performed using head contour maps for high and low groundwater level, the frequency and duration curves and statistical analysis. Surfer and ArcGIS software were used for creating head contour maps on the site of the Kosnica wellfield. Thesis analyzes data of groundwater levels from 2007 to 2009 for three piezometers: PPČ-16, OB, ČP-5. Comparison of the data and results was performed for all three piezometers. Data were statistically analyzed in MS Excel and presented in diagrams. The analysis of groundwater levels in three characteristic piezometers in the period from 2007 to 2009 shows that on the site of the Kosnica wellfield the predominant direction of groundwater flow is northeast, which corresponds with the general direction of groundwater flow in the whole area of the Zagreb aquifer