Kajian Hidromorfologi Danau Kelapa Gading di Kisaran Naga Kecamatan Kisaran Timur Kabupaten Asahan Provinsi Sumatera Utara

Abstract

Lake is a body of stagnant water throughout the year. The lake can be formed naturally and artificially. Kelapa Gading Lake is an artificial lake located in Asahan of North Sumatera. Data on the lake morphometry is needed to determin the level of water’s fertility, and to know ability of lake in accepting the pollutant load. The purpose of the study is to examine aspects of the lake morphometry of Kelapa Gading. The research was conducted from February to April 2016. Data was collected in this research were depth, water flow, the width of the lake and around the lake. The data processed by using ArcMap. Output of research is Kelapa Gading lake has an area about 11931.37 m2 , with maximum length of 161.14 m, a maximum width of 124.72 m, and the circumference of 688.50 m. The maximum depth of 2.15 m, with the shape of the lake bottom is flat. Volume Lake Kelapa Gading is 15033.52 m 3 , the water discharge of about 0.74 to 0.92 L / s, with a stay of lake water ± 225-226 days, the brightness of the water ranges from 0.37 to 0.48 m with a depth of about compensation 0.98 to 1.07 m, and Lake Kelapa Gading has low stability