365 / 2024-02-29 20:55:35

Developing a Framework for Sustainable and Scientific Extraction of Riverbed Materials from the Chure-Terai Rivers in Nepal

Sediment,Non-perennial Rivers,Sediment Extraction,Chure,Terai,Nepal

Sand and gravel are among the most extracted materials globally, surpassing even fossil fuels. The mining industry has become a major global enterprise, and Nepal is no exception. However, the mining of riverbed materials in Nepal lacks proper regulation and scientific approach. Without scientific guidelines, extraction has been carried out haphazardly, disregarding natural requirements and engineering principles. The mining of riverbed materials, such as sand and gravel, has seen a significant increase in recent years due to rising demands from the construction sector. The unscientific and haphazard nature of this mining not only adversely affects river morphology but also impacts the safety and performance of irrigation systems, hydropower headworks, and river training structures. In this context, the Siwalik or Chure hills of Nepal which are geo-morphologically considered the most fragile regions of Nepal where the issues of sand mining are critical.

Recognizing the urgent need for sediment management in the Chure region, we have endeavored to create a framework for the sustainable and scientific extraction of riverbed materials. To our knowledge, there has been no concrete research on developing such a framework based on scientific evidence and the application of geospatial techniques and remote sensing. Our methodology involves gathering secondary information, conducting field visits, and utilizing satellite imagery and remote sensing data. We believe that developing a framework to regulate extraction does not necessarily require advanced technology or high costs. Simple field measurements, along with geospatial techniques and satellite data, are adequate for effectively and sustainably managing sediment and riverbed materials.