Identification and Quantification of Non-Point Sources of pollution to Sabarmati River, Ahmedabad

“Whatever can be measure, can be control”.Non-point pollution sources(NPS) account for more than 50% of the total water quality problem, and they are being recognized and investigated nationally and internationally. In many areas, non-point pollution, such as runoff from crop land, urban storm water, strip mining and runoff from construction sites are becoming major water quality problems.To identify and quantify Non-point sources of pollution the selected study area is the stretch of the Sabarmati river from gandhinagar to Ahmedabad city. The selected study area is divided into two parts. 1. The upstream of Ahmedabad city. 2. Ahmedabad city. Identification of NPS is done by literature survey and field visit of study area. Quantification can be done by using different runoff calculation methods. Because of limitations of all method, the appropriate one has been chosen for analysis. By quantifying it is observed that the NPS contribute the large amounts of pollution load which can not be underestimated. As on today, there is no direct approach to estimate Nonpoint Pollution Sources. Even information available is not in direct useful form. So, there is need to develop system to estimate Non-point Pollution Sources in much simplified form