Analysis of Morphometric Changes in Tondano Lake Based on Bathymetric Maps

This study aims to analyze changes in the morphometry of lake bottom a period ten years, namely from 2006 2016. The analysis morphometric is carried out by comparing two bathymetric maps mapping and aspects studied include water surface area stated km 2 , volume (in m 3 ) depth m). results showed that within 10 years has decreased 1.03 while total increased 10.41 . average barely changed significantly, only silting about 0.01 meters. Judging contour pattern, it shows there tendency for siltation move not towards south but also east. That means more sediment contributions come western region. rain catchment on west side larger when compared east (Eris District). potential greater this area.