2. Objectives

• To prepare hydrogeomorphological maps on 1:50,0000 scale using satellite data.
• To delineate ground water potential zones by assessing the hydrogeomorphic units on 1:50,000 scale.
• Preparation of integrated ground water resources map derived from hydrogeomorphology, ground water quality and depth to water level maps.

3. Study Area

3.1 Location and Extent
The Gurgaon district is one of the southern districts of Haryana. The district lies between 270 39' to 280 32' North latitude and 760 39' to 770 20' East longitude. On its north are the district of Rohtak and the Union territory of Delhi, on its east Faridabad district. Its south the district shares boundary with the state of UP and Rajasthan. On its west lies the district of Rewari and the state of Rajasthan. The total area of the district is 2716 sq. kms. Gurgaon town is situated only 32 kms south west of New Delhi, the capital city of India. The district has sub-tropical, continental monsoon climate. The normal annual rain fall in the district is 553 mm. Temperature starts rising in March. The mean daily maximum temperature is about 41o C in the months of May and June.

3.2 Physiography and Drainage
The district comprises of hills on the one hand and depressions on the other, forming irregular and diverse nature of topography. Two ridges: Firojpur Jhirka - Delhi ridge forms the western boundary and Delhi ridge forms the eastern boundary of the district. These hills are northern continuation of Aravalli hills. The northwestern part of the district is covered with sand dunes lying in the westerly direction due to south western winds. The extension of the Aravalli hills and the presence of sand dunes collectively form the diverse physiography of the district. The drainage of the district are typical of arid and semiarid areas. It comprises of large depressions and seasonal streams. Important depressions of the district are Khalilpur lake, Chandani lake, Sangel - Ujhina lake, Kotla dhar lake and Najafgarh lake. Sahibi and Indrani are two important seasonal streams of the district.

3.3 Geology and Soils
Gurgaon district is occupied by quaternary alluvium and precambrian meta-sediments of Delhi System. The geological formations of Gurgaon district have been extensively studied by R. Chakrapani (1981). Delhi super group is represented by Alwar quartizites, mica schists and pegmatite intrusives of the Alwar series and slates of phyllites and quartzites of the subrecent alluvium and sand dunes. Stratigraphic succession of the area is given in table 1. The soils are sand to loamy sand in sandy plain areas. Sandy loam to clay loam/silty clay loam in alluvial plains, loam sand to loam, calcareous in salt affected plains; silty loam to loam in low lands and loamy sand to loam, calcareous in hills. Taxonomically these soils may be classified as Typic Ustipsamments, Typic Ustorthents, Typic/Udic/Aquic Ustochrepts, Typic Haplaquepts and skeletal/Lithic Ustorthents