The Rainfall Erosion Rate Analysis and Conservation Plan in the Catchment Area of Hera, Dili, Timor-Leste

Aderita Takeleb; Qonaah  Rizqi Fajriani; Ana  Fatima Godinho

Aderita Takeleb Department of Civil Engineering, Dili Institute of Technology, Dili, Timor-Leste
Qonaah Rizqi Fajriani Department of Civil Engineering, Universitas Negeri Yogyakarta. Indonesia
Ana Fatima Godinho Department of Civil Engineering, Dili Institute of Technology, Dili, Timor-Leste

Keywords: Erosion, Rainfall, Soil Conservation, Hera Catchment Area, USLE Model

Abstract

This study aims to assess the level of land erosion due to rainfall and analyze conservation efforts in the Hera area, Dili, Timor-Leste, using a combination of USLE models, Geographic Information Systems (GIS), and field surveys. The total area is around 14 hectares and the landscape area has surrounding by mountain in the south part. Based on the Topography survey, the slope area is ranging from 2-40%. The results showed that the application of vegetation can reduce the erosion rate by up to 90%, which has a positive impact on soil fertility, water quality, and infrastructure protection. However, the long-term effectiveness of this method can be affected by variations in soil conditions, climate, and socio-economic constraints. This study underlines the importance of further studies to identify optimal vegetation types, evaluate long-term impacts, and consider integration with other conservation methods and climate change scenarios. Adaptive and sustainable conservation strategies are needed to reduce erosion and support environmental sustainability in the catchment area of Hera

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