Application field

Ⅰ 、Introduction

Nepal is among the richest in terms of water resource availability and it is one of the most important natural resource of the country. Water resources are abundant throughout the country in the form of snow covers, rivers, springs, lakes, and groundwater. Despite the large availability, access of water is not so easy and equal for all population of the country. Rugged and difficult terrain, deep river valleys, sparsely distributed settlements and poorly developed infrastructures are the major factors that deprive the easy and equal access to water. Groundwater is not found everywhere. Lithological layers consisting of coarse grains of sediments like sands, gravels form good reservoir or aquifer but layers containing of finer grains of sediments like silts, clay do not form good reservoir or aquifer. Such layers may contain water in them but cannot move from them easily due to lack of permeability. Similarly, there is less chance for groundwater to be trapped in the hard-compact rock terrain, but good chance exists in fractured, jointed rocks. Groundwater is the most convenient and important source of water in Terai region, Dun Valleys and some of Inter Mountain Basins like Kathmandu and Pokhara, there is need of accessing the very source in the hilly and mountainous regions as well. Since ancient time, most of the people in the mountainous area depend up on Kuwa, Pandhera, Nwalo etc. for Drinking water. This kind of water source is the form of groundwater which is the Spring Water. Hence to increase the chance of success of groundwater exploitation (Drilling), a prior study employing suitable scientific method is to be conducted in the area under consideration. For the assessment of groundwater potential (hydro-geological) condition of the area and to locate the probable area before drilling, Groundwater potential study along with Geophysical Investigation (Electrical Resistivity Survey) is desirable. So, the municipality has appointed Himalayan Earth Science Research Center and Solution Pvt. Ltd as a consultant for carrying out Groundwater potential study.