Mean length of channel segments of a given order is greater than that of the next lower order but less than that of the next higher order. The relief ratios of the Njaba drainage basin and that of Orashi drainage basin was estimated to be in the range of 0. Linear aspects of the drainage network of the study area Basin Stream Order u Number Of Streams Nu Total length of Streams Lu kms Log Nu Log Lu Gadilam Basin 1 1277 764. The Upper Kanhar basin lies in the southern part of basin covering an area of about 1,499. The morphometric analysis of the drainage basin and channel network play a vital role for understanding the geo-hydrological behavior of drainage basin and expresses the prevailing climate, geology, geomorphology, structural, etc.
The result calculated in this paper will suggest and recommend developing a better water usage mechanism for proper watershed management in the Kanhar River basin. Stevenson 1999 , Drainage Basin, Aquatic Habitat Assessment: Common Methods, Published by American Fisheries Society. Therefore, the area could be basically used for agricultural activities around stream sides due to being flat in nature and also a water accessibility. The morphometric parameters of Kanhar River basin have been calculated and the results are given in the Table. Thus the whole setup offers an opportunity for storage of water with an advantage of water head with respect to the Hiran plain. This is mainly due to the diversity of slope and relief pattern of the basin.
Drainage density can be defined as the total stream channel per unit area. Further morphometric analysis revealed that the bifurcation ratio of Njaba and Orashi drainage basins were estimated at 1. Presents study makes an effort to prioritize two sub-watersheds i. Some of these summits show long continued erosion and which form platforms within the hillocks. Ofomata , 27-28, Ethiope Publishing House, Benin. The remote sensing technique is the convenient method for morphometric analysis as the satellite images provide a synoptic view of a large area and is very useful in the analysis of drainage basin morphometry.
The stream length is a measure of the hydrological characteristics of the bedrock and the drainage extent. The mean bifurcation ratio Rbm characteristically ranges between 3. Morphological parameters-based prioritization is in good agreement with the geological field investigation carried out during the field work. There are numerous examples of traditional and expert based image classification systems for detection, monitoring and mapping the land use and land cover characteristics worldwide using remote sensing data. Drainage density of each sub-watershed of Kanhar basin is given in the Table.
The total length of the river is about 1333. Further morphometric analysis revealed that the bifurcation ratio of Njaba and Orashi drainage basins were estimated at 1. The pour point of the basin is shown in Fig. High drainage density and stream frequency indicate larger run off from a basin. Therefore, in this study to find out the most vulnerable sub-watershed to soil erosion, morphometric analysis and prioritization were carried out on 14 sub-watersheds of Manot River catchment, which is a tributary of the Narmada River.
The mitigation of potential environmental hazards within these basins goes beyond advocacy. Stream length of different order under sub-watersheds of Kanhar basin is given in Table. Details of stream order of several tributaries of Kanhar River and their sub-watershed area are shown in the Table. Its boundary is marked by ridges of high land beyond which any precipitation will drain into adjacent basins. Pavai fall near Kothali village Balrampur is of about 61 m.
In the Gadilam River basin bifurcation ratio ranges from 2. Drainage density Dd Drainage density Dd is a measure the total stream length in a given basin to the total area of the basin Strahler. The climate of the watershed is characterized by hot summer and well-distributed rainfall during the monsoon season. The mean annual temperature in the area is 27. The Bifurcation Ratio Bifurcation ratio is the relationship between the number of streams of one order and those of the next highest order.
Circularity ratio Rc Miller stated circularity ratio is the ratio of the area of the basins to the area of circle having the same circumference as the perimeter of the basin. These morphometric characteristics are key indices that are invaluable in assessing the geo-hydrological behavior of the drainage basins and their vulnerability to flooding. A dominant feature within Oguta study area is the prevalence of alluvium deposits and the Benin Formation. The length of the Gadilam River basin is 133. Low value of relief ratios is mainly due to the resistant basement rocks of the basin and low degree of slope Mahadevaswamy et al. To evaluate the drainage basin morphometry, various parameters like stream number, stream order, stream length, stream length ratio, bifurcation ratio, basin length, basin area, relief ratio, elongation ratio, drainage density, stream frequency, form factor and circulatory ratio, etc. Drainage basin analysis is also very important in any hydrological investigation like assessment of groundwater potential and management.
This is in consonance with the latest developments and researches as cited above. Physiographic Characteristics and the Runoff Patterns: Proc. Hydrologists and Geomorphologists have recognized that certain relations are most important between runoff characteristics, and geographic and geomorphic characteristics of drainage basin systems. Landuse classes adopted in this study include forest, farmland, barren land deforested land , water body, etc. It has an estimated area of 484. Smaller the value of form factor, more elongated will be the basin. The dense rich forest area provides an abode to thousands of species of flora and fauna.