• M. Ramachandra
• K. Raghu Babu
• B. Pradeep Kumar
• P. Ravichandra

The Papaghni River originates in the Nandi Hills of Chikkaballapur district in Karnataka. It enters the Andhra Pradesh in Anantapur district and flow into YSR district at Koduru village. It is a non-perennial, rain fed, seasonal river with its basin receiving 60-80 cm of rainfall yearly. It traverses through a surrounding granitic terrain by eroding the track and forming valleys. The functionality of cutting-edge mapping technology and geospatial analyses to prepare geology and geomorphology maps has been applied in the present study. Papaghni river is one among the rivers of the world characterized by frequent bank erosion leading to channel pattern with changes and shifting of bank line. This observes interest of earth scientists aimed towards the imminent technology of construction of sub surface dams. The Penna River flows along several mandals of YSR district of Rayalaseema area, Andhra Pradesh India, among which three mandals, Vempalli, Veerapunayinipalli, and Pendlimarri are taken for the present study. YSR District is a semi-arid region with very low average rainfall per annum. Sub surface dam is a facility that stores ground water in pores of strata and use floor water in a sustainble manner. These dams have many intrinsic well worth applications that an ideal surface dam lack. The basics about sub surface dams, the development of unique dams across the river, an important precept is a slim valley containing coarse sand particles in the river course where the water can be trapped and avoid flood. Very coarse sand grains create natural voids in their contact with each other, in which more water can be stored. According to a current evaluation of the construction of surface dams, sedimentation, submergence of villages, fertile lands and forest, fall apart, and salination, will occur, in addition to the immaturity and complexity of geological capabilities. These worst effects can be reduced through building of sub surface dam. Constructing a subsurface dam in the Papaghni river channel will prevent the adverse effects of a subsurface dam and in addition equivalent quantity of groundwater can be stored in the upstream. This technology will have boosted up the groundwater assets of several nearby regions which include the Vempalli, Veerapunayinipalli, and Pendlimarri areas bordered via Papaghni River in YSR District. This tries to make out a case for construction of small subsurface dams on the confluence of the Papaghni River to provide water deliver to the continuous drought prone area further East west side of Pendlimarri Vempalli and Veerapunayuni palli and their vicinity.

Papaghni River, sub surface dams, surface dams, grain sizes sand, pore Space.

"Application of Geo spatial and Field Techniques to choose Suitable sites for Construction of Subsurface Dams along Papaghni river Basin Y.S.R District A.P India", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.343-356, May-2019, Available :http://www.jetir.org/papers/JETIR1905F52.pdf

"Application of Geo spatial and Field Techniques to choose Suitable sites for Construction of Subsurface Dams along Papaghni river Basin Y.S.R District A.P India", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp343-356, May-2019, Available at : http://www.jetir.org/papers/JETIR1905F52.pdf