International Journal of Engineering Research ISSN:2319-6890)(online),2347-5013(print) Issue Special3 18-19, Dec. 2014 HYDRO 2014 International MANIT Bhopal Page 7 06 47.07 0.02 07 22.86 0.00 08 10.15 0.00 09 12.90 0.01 10 19.70 0.08 11 27.63 0.18 12 27.59 0.16 SWAT gives the average monthly basin values of water and sediment yield in mm and Tonnes/Hector respectively. From the output it seems easier to estimate sediment yield using hydrological model i.e. SWAT. Using this model identification of the soil erosion area becomes easier from which management of sediment yield can be done. Thus SWAT gives each basin values present in watershed through which Soil and Water conservation practices can be done for sustainable development of water resources. 4. CONCLUSIONS: ARC-SWAT is powerful hydrological model to identify erosion prone areas and it is also useful for watershed prioritization. Using hydrological models identification and solution of such critical soil erosion areas is in water resources engineering can be achieved for sustainable development. 5. REFERENCES i. Chen,B. (2012) ―Development of an integrated adaptive resonance theory mapping classification system for supporting watershed hydrological modeling‖ Journal of Hydrologic Engineering, ASCE, vol. 17, pp 679-693 ii. Gabriel, G., 2008 ―Fitting of time series models to forecast stream flow and groundwater using simulated data from SWAT‖, Journal of Hydrologic Engineering, ASCE, pp: 554-562. iii. Gong Y., 2010 ―Effect of watershed subdivision on SWAT modelling with consideration of parameter uncertainty‖, Journal of Hydrologic Engineering, ASCE, December, pp: 1070- 1074. iv. Kim, N.W., 2012 ― Assessment of flow regulation effects by dams in the Han River, Korea, on the downstream flow regimes using SWAT‖, Journal of water resources planning and management, ASCE, pp: 24- 35. v. Kirby, J.T. and Durrans, S.R., 2007 ―Modelling the combine effect of forests and agriculture on water availability‖, Journal of Hydrologic Engineering, ASCE, pp: 319-326. vi. Mishra A. and Kar S., 2012 ―Modelling hydrologic processes and NPS pollution in a small watershed in sub humid subtropics using SWAT‖, Journal of Hydrologic Engineering, ASCE, pp: 445- 454. vii. Pikounis M. (2003) ―Application of the SWAT model in the Pinios river basin under different land-use scenarios‖ 8th International Conference on Environmental Science and Technology, Vol 5, pp 71-79 viii. Sang, X., and Chen Q, 2010 ―Development of SWAT tool model on human water use and application in the area of high human activities‖, Journal of Irrigation and Drainage Engineering ASCE, pp: 23-30. ix. Setegn, S. G. (2008) ―Hydrological modeling in the Lake Tana Basin, Ethiopia using SWAT model‖ Journal of Hydrology, ASCE, vol.2, pp. 49-62 Approaches to Hydrological Modeling of the Heterogeneous Catchment of the Dal Lake S. Raazia 1 R. Khosa 2 1 Department of Civil Engineering, Indian Institute of Technology Delhi, New Delhi, 110016, India 2 Department of Civil Engineering, Indian Institute of Technology Delhi, New Delhi, 110016, India Email: syeedahraazia.sr@gmail.com ABSTRACT: Dal Lake situated in the state of J&K along with its associated wetland system, forms a highly complex and vulnerable hydrological system. The lake catchment comprises of gently to steeply sloping mountains on three sides and a low relief, highly urbanized landscape on one side. Owing to these differences in physical features of the landscape, the catchment exhibits a spatially varying hydrological behaviour. The study identifies the catchment components with dissimilar hydrological response and, in recognition of these distinct but dominant hydrological features, has proposed similarly distinct approaches to hydrological modeling for these appropriately designated sub areas of the overall catchment. Briefly, the entire catchment was divided into 3 subbasins namely (i) Dara- Dachhigam subbasin with a mild to steep mountainous relief and a prominent network of drainage channels, (ii) Zabarwan subbasin with gently sloping foothills along the lake shore having a backdrop of highly steep mountains further from the lake, and (iii) the urban subbasin consisting of a nearly plain urbanized area and wetlands spread over an undulating topography. In the Dara-Dachhigam subbasin, runoff generation has been modeled in accordance with the Hortonian mechanism using the hydrological model SWAT. The hydrology of the Zabarwan basin is characterized by saturated foothills and presence of springs in the lower reaches. Presence of preferential flow paths is likely on the forested peaks. A dual porosity hillslope runoff model that quantifies Hortonian overland flow, saturation overland flow and lateral subsurface flow as well as extent of foothill saturation was used to simulate the hydrology of this region. The urban subbasin, having historically been a wetland, has a shallow water table with high surface water-groundwater interactions and, accordingly, the region was modeled using hydrological model MIKE SHE. Keywords: Heterogeneous catchment hydrology, hydrological modeling, Dal Lake catchment 1. INTRODUCTION The Dal Lake is s shallow, fresh water lake situated in the summer capital Srinagar, of the state of Jammu and Kashmir. The lake catchment extends over an area of 336 square kilometres including the area of the wetland system which is about 24 square kilometers. The catchment is located between 34 0 0β‟ and γ4 0 1γ‟ N latitudes and 74 0 48 and 75 0 0λ‟ E longitudes. The lake is situated at an altitude of 1583 m with the highest point in the catchment at 4390 m height above the mean sea level. The lake forms the central body of a complex wetland system and is connected to a number of smaller water bodies through numerous water channels. This urban lake along with its associated wetland system forms a highly complex and vulnerable hydrological system. The lake is surrounded by gentle to steep sloping mountains on three sides and a nearly