© 2020 JETIR March 2020, Volume 7, Issue 3 www.jetir.org (ISSN-2349-5162) JETIR2003254 Journal of Emerging Technologies and Innovative Research (JETIR) www.jetir.org 1776 “Formulation of policy Surface Hydrologic Modeling and Analyzing Watershed Hydrologic Response to Land cover Change” Nagendra Kumar Daharwal 1 , Dr. M.P.Verma 2 1 PHd Research Scholar (Environment Engineering), Department of Civil Engineering, 2 Professor, Department of Civil Engineering, Madhyanchal Professional University Bhopal (M.P.) Abstract: We are experiencing unprecedented environmental degradation accompanied by complex interactions between urbanization and global environment and climate change on the lives of natives of a particular geographical region influences the overall health status of an individual increasing our understanding of these interaction will involve more active collaboration between the expert from ecological, social and health science. Health professionals and environmental have a vital contributory role in preventing and reducing the health effect of global environmental change. Urban flooding is the most frequently occurring disaster in rapidly urbanizing cities. Rapid urbanization in general, is characterized by an increase in the total impervious surface area, which means less soil cover for the storm water to infiltrate and a greater volume of runoff from the area in case of a storm event. This increased volume of surface runoff, if not drained, results in urban flooding. Urban flooding can cause serious economic and environmental damages by disrupting transportation and spreading pollution. It is therefore, essential to understand the cause, behavior and effects of urban flooding so as to minimize the risks and costs associated with urban floods. This research provides an insight into surface hydrologic modeling. It also provides an overview of calibration against DEM resolution and hydraulic conductivity values. Finally, it provides an understanding of watershed hydrologic response to different land covers with various Manning’s roughness values. 1. INTRODUCTION The study of water fluxes in urban watersheds has gained importance in recent years because of growing concerns about water sustainability and droughts in urban areas with subsequent economic, public-health and flooding impacts. Flooding in urban areas is a serious and growing problem. Hydrologic models are increasingly used to simulate hydrologic processes and study flood sin complex watersheds. In urban areas, they are commonly used as a management tool and for designing storm water drainage infrastructure. Hydrologic models are simplified representations of hydrology, primarily used for understanding underlying processes and simulate potential scenarios. Hydrologic processes include precipitation, interception, depression storage, surface runoff, subsurface runoff, evapotranspiration, channel flow, and groundwater flow.