Morphometric parameters  Formula/Definition  References 
I. Drainage network 


1. Stream order (u)  Hierarchical rank  [8] 
2. No. of streams (N_{u}) 
 [6] 
3. Stream length (L_{u}) km  (km)  [9] 
4. Mean stream length (L_{sm}) km  L_{sm} = L_{u}/N_{u} (km)  [9] 
5. Stream length ratio (R)  R_{L} = L_{u}/L_{u − 1}, where L_{u} = the total stream length of order “u”, L_{u − 1} = the total stream length of its next lower order.  [6]

6. Bifurcation ratio (R_{b})  R_{b} = N_{u}/N_{u + 1}, where N_{u} = total no. of tream segment of order “u”, N_{u + 1} = no. of segments of the next higher order.  [40] 
7. Mean bifurcation ratio (R_{bm})  R_{bm} = average of bifurcation ratio of Strahler all orders.  [8] 
II. Basin geometry 


8. Basin length (L_{b}) km  Length of the basin (km)  [6] 
9. Basin area (A) km^{2}  Plan area of the watershed (km^{2})  [6] 
10. Mean basin width (W_{b})  W_{b} = A/L  [41] 
11. Basin perimeter (P) km  Perimeter of the watershed (km)  [6] 
12. Form factor (ratio) (R_{f})  R_{f} = A/L_{b}^{2}  [6] 
13. Elongation ratio (R_{e})  R_{e} =  [40] 
14. Compactness coefficient (C_{c})  C_{c} = 0.2841 * P/A^{0.5}  [42] 
15. Texture ratio (T_{r})  Tr = N_{1}/P  [40] 
16. Shape index (B_{s})  Bs = L_{b}^{2}/A  [6] 
17. Lemniscate ratio (k)  k = L^{2}/4A  [43] [44] 
18. Circularity ratio (R_{c})  R_{c} =  [9] [39] 
19. Drainage texture (D_{t})  Dt = N_{u}/P, where Nu = Total no. of streams ofall orders, P = perimeter (k)  [6] 
III. Drainage texture analysis 


20. Stream frequency (F_{s})  F_{s} = N_{u}/A  [6] 
21. Drainage density (D_{d}) km/km^{2}  D_{d} = L_{u}/A  [6] 
22. Drainage intensity (D_{i})  D_{i} = F_{s}/D_{d}  [45] 
23. Constant channel maintenance (C) km^{2}/km  C = 1/D_{d}  [40] 
24. Length of overland flow (L_{o}) km  L_{o} = 1/2D_{d}  [6] 
IV. Relief characteristics 


25. Basin relief (B_{h}) or total relief (H) m  B_{h} = h − h_{1}, where, h = maximum height (m) h_{1} = minimum height (m)  [46] 
26. Relief ratio (R_{r})  R_{r} = H/L_{b}, Where H = total relief L_{b} = basin length  [9] 
27. Ruggedness number (R_{n})  R_{n} = D_{d} * (B_{h}/1000)  [9] 
28. Dissection index (D_{is})  D_{is} = B_{h}/R_{a}, where R_{a} = absolute relief  [47] 
29. Time of concentration (T_{c})  T_{c} = 6.95 (L^{1.15}/B_{s}^{0.385})  [48] 
 where L = length of main stream 
