Topographic Survey for mining area - Muara Enim Regency

Project Details

PT Karta Bhumi Nusantara and its team have completed a topographic survey using UAV LiDAR, photogrammetry, and bathymetry in the Muara Enim area of South Sumatra. This activity encompassed mapping approximately 89 hectares of land and approximately 22.5 hectares of river bodies, including the Bangke River, Mbiung River, and Kiahaan River. The survey was conducted to support technical planning, hydrological analysis, and environmental management in the mining concession area.

Project Name

Topographic Survey for mining area – Muara Enim Regency

Project Summery

Topographic Survey for mining area - Muara Enim Regency

PT Karta Bhumi Nusantara has completed an integrated topographic survey using UAV LiDAR, photogrammetry, and bathymetry in the PT Manambang Muara Enim concession area in South Sumatra. This activity focused on three main rivers: the Bangke River, the Mbiung River, and the Kiahaan River, which have complex morphological characteristics, combining open land, dense vegetation, and river bodies with varying depths.

Monitoring was carried out over approximately 89 hectares of land and approximately 22.5 hectares of river bodies. To obtain accurate data, the team installed control points (CPs) using static GNSS methods, followed by UAV LiDAR and photogrammetry data acquisition. The mapping results produced high-resolution aerial orthophotos with an accuracy of 2 cm per pixel, as well as LiDAR point clouds, which were then classified into ground, vegetation, and other objects.

In addition, bathymetric surveys using a USV equipped with a Garmin 585 Plus Single Beam Echo Sounder (SBES) sensor were conducted in the Mbiung and Kiahaan Rivers, while RTK GNSS methods were used in the Bangke River. The results were a riverbed elevation model, bathymetric maps, and longitudinal and cross-sectional profiles that provide details on depth, width, and bank conditions.

The resulting outputs included orthophoto maps, 0.5 m contour maps, digital elevation models, lengths and cross-sections, and coordinate descriptions of the watershed. All of this data has been integrated into the official coordinate system, allowing for direct use to support technical planning and hydrological modeling.

The survey results also revealed significant changes in the landscape from 2013 to 2024, primarily due to open-pit mining activities around the Bangke and Mbiung Rivers. These changes affected vegetation cover, sedimentation potential, and river hydrological patterns, making this updated spatial data crucial for environmental impact planning and mitigation.

By utilizing UAV LiDAR, RTK GNSS, and USV Bathymetry technology, PT Karta Bhumi Nusantara continues to deliver modern survey solutions that are accurate, efficient, and sustainable. The resulting data serves as a critical foundation for supporting air resource management, risk mitigation, and environmentally conscious infrastructure development in the Muara Enim region.

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