Abstract
The aim of present study is to investigate morphometric analysis of Mun river basin in Thailand. The drainage parameters performed such as linear, aerial and relief aspects of 23 sub watersheds in the concentrated area. The analysis shows that watershed conatins 6611 drainage segments and stream order from I to VII. From that 5275 segments are comes under I order stream, 1025 are II order, 235 are in III order, 57 are IV order, 16 are in V order, 2 and 1 segments are comes under VI and VII order, respectively. The total stream length of Mun river basin is 40353.8 km. The majority of basin contains the bifurcation ratio value is >5. This indicates that geologically hard rock terrain, less infiltration and high flash flood. This analysis helps to better understanding the management and planning activities in study area .
Highlights
It is a tool for measuring Morphometric, mathematical analysis of the configuration of the earth’s surface, form, and dimensions of its landforms (Clarke,1966)
From that 5275 segments are comes under I order stream, 1025 are II order, 235 are in III order, 57 are IV order, 16 are in V order, 2 and 1 segments are comes under VI and VII order, respectively
Linear aspects of the basin are related to the channel patterns of the drainage network wherein the topological characteristics of the stream segment in terms of open links of the network, which consists of all of the segment of stream of a particular river, is reduced to the level of graphs, where stream junctions act as points and streams, which connect the points become links or lines wherein the numbers in all segments are counted, their hierarchical orders are determined, the length of all stream segments are measured and their different interrelationship are studied
Summary
It is a tool for measuring Morphometric, mathematical analysis of the configuration of the earth’s surface, form, and dimensions of its landforms (Clarke,1966). This examination provides a quantitative explanation of the basin geometry to grab initial slope or inequalities within the rock hardness, structural controls, recent geologic process and geomorphic history of the basin (Strahler, 1964). GIS techniques are used for assessing various terrain and morphometric parameters of the watershed, as they provide a flexible environment and a powerful tool for the manipulation and analysis of abstraction data significantly for the feature identification and the extraction of knowledge for higher understanding
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