Analisis Batimetri Dalam Survei Investigasi Dan Desain Alur Pelayaran (Studi Kasus: Sungai Sepaku, Kabupaten Penajam Paser Utara, Kalimantan Timur)

Muhammad Arif Rifa'i; Mohammad Abdul Basyid

Authors

Muhammad Arif Rifa'i Institut Teknologi Nasional, Bandung Author
Mohammad Abdul Basyid Institut Teknologi Nasional, Bandung Author

Keywords:

Bathymetry, USV, Sepaku River, Navigation Channel, IKN

Abstract

The development of Indonesia’s new capital city (IKN) Nusantara in East Kalimantan requires an efficient logistics distribution system, including the utilization of the Sepaku River. However, sedimentation and limited depth data hinder navigation. This study aims to analyze the bathymetric conditions of the Sepaku River using an Unmanned Surface Vehicle (USV) Satlab Hydroboat 1200 equipped with a Single Beam Echo Sounder (SBES) and GNSS RTK. The survey covered approximately 8.9 km, with depth corrections based on Low Water Spring (LWS) tidal data. Results indicate that most river segments do not meet the minimum depth requirement of 5.5–6 meters for safe navigation. Selective dredging is necessary, with an estimated total volume of approximately 627,471.75 m³. This research provides updated bathymetric maps, critical zone identification, and navigational route recommendations for dredging planning.

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