Evaluation of morphometric parameters for watershed hydrology

Abstract

The topographical and drainage network characteristics of a watershed have an important role in the watershed management plans that designed to ensure the sustainability of water resources. One of the first phase of the studies and practices discussed within the scope of watershed management is the surveys. Analysis of morphometric parameters makes a significant contribution to informing about the hydrological status of the area before starting the land surveys. In this study, numerical values of morphometric properties of Lake Eğirdir watershed were obtained by using Geographical Information Systems software. These values are stream order (1th, 2th, 3th, 4th, 5th, 6th order), number of streams (2449 number) and length of streams (41742 km), form factor factor (0.47), shape factor (2.13), circularity ratio (0.31), elongation rate (0.32), compactness coefficient (2.18), drainage density (1.21 km/km²) and stream frequency (0.82 number/km²), bifurcation rate (4.63), drainage texture (6.54 number/km) and infiltration value (4.56). Total area of watershed is 345850 sq. km and watershed perimeter is 375 km. These values were analyzed for watershed hydrology. The shape and geological formation of the watershed were effective on watershed hydrology.

Keywords

• morphometry
• watershed
• lake eğirdir
• morfometri
• havza
• eğirdir gölü