International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 07 Issue: 05 | May 2020
p-ISSN: 2395-0072
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Mean Basin Width (Wb) Basin Area (A) Sq kms
Wb = A / Lb GIS Software Analysis
Horton (1932) Schumm(1956)
8.19 183.92
Basin Perimeter (P) kms
GIS Software Analysis
Schumm(1956 )
90.55
Relative Perimeter (Pr ) Length Area Relation (Lar) Lemniscate’s (k ) Form Factor Ratio (Rf) Shape Factor Ratio (Rs) Elongation Ratio (Re) Elipticity Index (Ie) Texture Ratio (Rt) Circularity Ratio (Rc) Circularity Ration (Rcn) Drainage Texture (Dt) Compactness Coefficient (Cc) Fitness Ratio (Rf)
Pr = A / P Lar = 1.4 * A0.6 k = Lb2 / 4A Ff = A / Lb2 Sf = Lb2 / A Re = 2 / Lb * (A / π) 0.5 Ie = π * Vl2 / 4 A Rt = N1 / P Rc = 12.57 * (A / P2) Rcn = A / P Dt = Nu / P Cc = 0.2841 * P / A 0.5 Rf = Cl / P
Schumm(1956 ) Chorley (1957) Horton (1932) Horton (1956) Schumm(1956 ) Schumm(1965) Strahler (1964) Horton (1945) Melton (1957)
2.03 31.98 0.68 0.36 2.74 0.68 2.1 4.03 0.28 2.03 5.45 1.89 0.29
Wandering Ratio (Rw) Watershed Eccentricity (τ) Centre of Gravity of the Watershed (Gc) Hydraulic Sinuosity Index (Hsi) % Topographic Sinuosity Index (Tsi) % Standard Sinuosity Index (Ssi) Stream Frequency (Fs) Drainage Density (Dd) km / kms2 Constant of Channel Maintenance (kms2 / km) Drainage Intensity (Di) Infiltration Number (If) Drainage Pattern (Dp)
Rw = Cl / Lb τ = [(|Lcm2Wcm2|)]0.5/Wcm GIS Software Analysis
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1.21 1.04 74.64E & 19.15N
Hsi = ((Ci - Vi)/(Ci - 1))*100 Tsi = ((Vi - 1)/(Ci- 1))*100
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Ssi = Ci / Vi Fs = Nu / A Dd = Lu / A C = 1 / Dd
Horton (1932) Horton (1932) Schumm(1956)
1.74 2.68 2.182 0.46
Di = Fs / Dd If = Fs * Dd
Faniran (1968) Faniran (1968) Horton (1932)
1.23 5.84 Dn & Ra
Length of Overland Flow (Lg) kms
Lg = 1/ (2 * Dd)
Horton (1945)
0.23
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82 17.59
5.3 Relief aspect Relief refers to the relative height of points on surface and lines with respect to the horizontal base of reference. Relief expresses the magnitude of the vertical dimension of the landform. 1) Maximum basin relief (H) Maximum basin relief (H) is the elevation difference between the highest Point in the catchment and the catchment outlet. The basin relief is found to be 1041m reveals that basin has undulating terrain having high kinetic energy of water results in severe soil erosion. 2) Relief ratio (Rhl) The elevation difference between the highest point and lowest point of watershed on the valley floor is the total relief of river basin. The ratio between the total relief of basin and the longest dimension of basin parallel to main drainage line is relief ratio (Schumm, 1956). In this study area of river basin relief ratio found to be 0.022. 3) Relative relief (Rhp) Relative relief is calculated by using the formula given by the Melton (1957) is Rhp= H*100/P, where P is perimeter in meter & H is total basin relief. Relative relief is found to be o.55.
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