OLDI (Oseanologi dan Limnologi di Indonesia)
Vol 2, No 2 (2017)

Morphometry and Pollution Load Capacity of Lake Pondok Lapan in Langkat Regency, North Sumatra

Muhtadi, Ahmad (Unknown)
Yunasfi, Yunasfi (Unknown)
Marufi, M. (Unknown)
Rizki, A. (Unknown)



Article Info

Publish Date
26 Aug 2017

Abstract

Morphometry is necessary to know the physical characteristics of a lake and how much the ability of the lake to receive pollutant loads. Determination of water quality status and pollution load capacity of lake water is very important to do with the utilization of lake by the community for cultivation activity of floating net cage (KJA). This study aimed to determine the characteristics of morphometry and bathymetry of the lake, determine the status of water quality and the capacity of lake pollution load. The study was conducted in January–March 2015. Mapping was done by making a path of 100 trajectories which was then processed with ArcView. The observation station for water quality consisted of 4 stations. The status of water quality was determined by the Pollution and Storage Index method based on PerMen LH. No. 115 of 2003. The capacity of lake pollution loud refers to PerMen LH. 28 of 2009. The results showed that Lake Pondok Lapan area reached 63,472.78 m2 (6.35 ha) with a maximum depth of 4.15 m. This lake is classified as a closed water, aerobic, with a residence time of 11–12 days. The depth of compensation is at a depth of 2.61–2.85 m. The water discharge coming out of the lake ranges 12,963.45–14,111.71 m³ per day. The status of water quality of Lake Pondok Lapan is categorized as uncontaminated with score 0 for the Storet method and 0.46–0.86 for Pollution Index method. Lake pollution load capacity is of 1.98 kg of phosphorus per year.

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Journal Info

Abbrev

oldi

Publisher

Subject

Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Environmental Science

Description

Oseanologi dan Limnologi di Indonesia is a scientific journal that publishes original research articles and reviews about all aspects of oceanography and limnology. Manuscripts that can be submitted to Oseanologi dan Limnologi di Indonesia is the result of research in marine and inland waters in ...