1Department of Water Engineering, Vilnius Gediminas Technical University, Sauletekio av. 11, Vilnius, Lithuania
2Centre for Cartography, Vilnius University, Ciurlionio 21/27, Vilnius, Lithuania
Submission date: 2014-09-14
Final revision date: 2015-03-15
Acceptance date: 2015-03-15
Publication date: 2015-07-27
Pol. J. Environ. Stud. 2015;24(4):1689–1696