In the study, the hydrogeomorphological parameters of Myntdu basin have been estimated from a digitized basin map where basic map data could be retrieved and manipulated quickly and accurately. The estimated geomorphological parameters of the basin covering linear, areal and relief aspects will be helpful in estimating and modeling the flow process in the basin.
Hydrogeomorphological parameters of a drainage network provide simple means, especially in mountainous and ungauged catchments to develop empirical rainfall-runoff relationships, synthetic hydrograph parameters and to develop regional Geomorphological Unit Hydrograph.
In the study, a 1:50000 scale Survey of India (SoI) map of Myntdu river basin has been used. The map is digitized using Calcomp digitizing tablet in AutoCAD. The geomorphological parameters consisting of linear, areal and relief aspects of the drainage network of the basin have been worked out using the facilities of AutoCAD and by developing some computer programs that can handle DXF files (ASCII format) of AutoCAD.
The report also briefly reviews various methods of estimation of geomorphological parameters established by numerous investigators throughout the globe. The results of the study will be utilized in various hydrological studies ongoing in the area related to a proposed hydro-electric power project. The quantitative estimates of the geomorphological parameters for the basin will be utilized for the development of a Geomorphological Instantaneous Unit Hydrograph (GIUH) for the basin.
The geomorphological characteristics of Myntdu basin provide a simple means to compare it with that of other basins to regionalize the experimental results.
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