Mapping potential areas for groundwater storage in theHigh Guir Basin (Morocco): Contribution of remotesensing and geographic information system

• 作者: Abderrahime Nouayti Driss Khattach Mohamed Hilali Nordine Nouayti
• 来源期刊: 地下水科学与工程:英文版
• 学科: 地球科学
• 关键词: High Guir BASIN GROUNDWATER storage Remote Sensing POTENTIAL assessment GEOGRAPHIC Information System
• 年，卷（期）: 2019,（4）
• 页码范围: 309-322
• 页数: 14页
• 分类号: P64

摘要

Identification of water potential areas in arid regions is a crucial element for the enhancement of their water resources and socio-economic development. In fact, water resources system-planning can be used to make various decisions and implement manage- ment of water resources policies. The purpose of this study is to identify groundwater sto- rage areas in the high Guir Basin by implementing Geographic Information System (GIS) and Remote Sensing methods. The required data for this study can be summarized into five critical factors: Topography (slope), lithology, rainfall, rock fracture and drainage. These critical factors have been converted by the GIS into thematic maps. For each cri- tical parameter, a coefficient with weight was attributed according to its importance. The map of potential groundwater storage areas is obtained by adding the products (coeffi- cient × weight) of the five parameters. The results show that 50% to 64% of the total area of the High Guir Basin is potentially rich in groundwater, where most of fracture systems are intensely developed. The obtained results are validated with specific yield of the aqui- fer in the study area. It is noted that there is a strong positive correlation between excel- lent groundwater potential zones with high flows of water points and it diminishes with low specific yield with poor potential zones.