Journal of Advances in Engineering Sciences

M. S. Jadhav ¹, K. C. Khare ²

Affiliations
1 Department of Civil Engineering, Sou. Venutai Chavan Polytechnic, Pune 411041, Maharashtra, IN
2 Sinhgad College of Engineering, Pune 411041, Maharashtra, IN

Abstract

Pashan Lake is a important Lake in Pune city which attracts migratory birds. Deforestation on nearby hills has caused heavy siltation resulting in decrease in the depth of the lake. This has reflected in reduction in the number of deep diving ducks which prefer to occupy the central deep portion of the lake. They are now outcompeted by dabbling ducks which prefer shallow water. The increasing number of these ducks in the central position is a clear indicator of decrease in the depth of the lake. It was found that depth of the lake in 1980 was 30-40 ft. which was reduced to 15-20ft in year 2001-02. The surface water quality of Pashan Lake is severely degraded due to the pollution from surrounding areas directly entering the water. Three surface sampling points were selected to evaluate the water quality. The study presents the. Phyisico_chemical characteristics of the lake water and suggests the means to improve the water quality through eco remediation measures for restoration.

Full Text

     

Shirish Gokhale ¹, Anagha Tamhankar ¹, Mandar Pimputkar ¹, Steve Kenney ¹, K. C. Khare ², S. N. Londhe ³

Affiliations
1 MWH ResourceNet, GB
2 SCOE, IN
3 VIIT, IN

Abstract

Amongst the various techniques available for assessing flood risk, the ones using Geographical Information System (GIS) are most promising. GIS is used to construct and update hydraulic models which are capable of predicting one dimensional and two dimensional flooding. The paper evaluates a flood risk tool which uses two methods of risk assessment - backing up from connecting sewers and surface overland flow. Overland flows can be assessed in two ways - using a rolling ball technique and using two dimensional surface flow data from hydraulic simulation software. The paper concludes that ‘Flood Risk Tool’ which uses both the above methods is useful in understanding flood risk.

Full Text