The watering industry was the main development in Darb El Arbaein. The confioned Nubian aquifer is composed of Taref and Kiseiba formation, which capped by Dakhla shale. The aquifer geology, hydrogeology, and hydrogeochemistry were collected, contoured, discussed, and modeled by ARCGIS procedures. The hydrogeological condition of the aquifer was worse by low permeability. The potentiometric head during 2012 decline from 21 to 50 m than those in 2000 periods, it resulted in increases in total dissolved solids concentration (TDS) in 2012 than 2000 periods by 12-800 ppm. The mean linear velocity of groundwater varied between 2 * 10-7 to 1.1 * 10-3 m/d, while the groundwater volume balance residual for steady state are negative values (most area). The overlay of geological and hydrogeological characteristics resulted in the good aquifer potentiality zones, which was in the southwestern and northeastern part. The error bar (standard deviation) was maximum for the irrigated area and minimum for Dakhla shale. The sand sheet represents about 45 % of the land cover, while Dakhla shale constitutes 26 %. The Kurkur and irrigated area constitutes 4 and 6 % of the area under investigation, respectively. The band ratios confirm the rock units distinguishing.

Keywords: Hydrogeology, hydrogeochemistry, GIS-Remote sensing, Middle Darb El Arbaein