S/N Morphometric Parameters Derivation Procedure Reference 1. Stream order (u) Hierarchical order Strahler, 1964 2. Stream length (Lu) Length of the stream Horton, 1945 3. Basin length (Lu) This is the straight line from the mouth of the basin to the farthest point on the basin perimeter Schumn, 1963 4. Main stream length (km) This is the length of the principal drainage Schumn, 1963 5. Main stream length (km) Total stream lengths in the basin divided by total number of streams Schumn, 1963 6. Total stream length (km) This is the total length of all the tributaries and the principal drainage Schumn, 1963 7. Basin perimeter (p) This is the outer boundary of the drainage basin that encloses its area Schumn, 1956 8. Bifurcation ration (Rb) ${\text{R}}_{\text{b}}=\text{Nu}/\text{Nu}+\text{1}$ , where u = total no of streams of order “u”, Nu + 1 = No of segment of the next higher order Schumn, 1963 AREA PROPERTIES 1. Basin Area (A) Area = map scale counted squares Gregory and Walling, 1973 2. Drainage Density (Dd) EL/A where L = total length of all streams; A = Basin Area Horton, 1945 3. Stream frequency (Fs) N/A where N = Total no of streams; A = Area of the basin Horton, 1945 4. Form factor A/(Lb)2 where A = Basin Area, Lb = Basin length Horton, 1932 5. Circulatory Ration (Rc) AπA/P2 where A = Basin Area, π = 3.14, Lb = Basin length Horton, 1932 6. Elongation Ration (Re) $\text{2}\sqrt{\left(\text{A}/\text{π}\right)/\text{Lb}}$ where A = Basin Area, Lb = Basin length and π = 3.14 Schumn, 1959 RELIEF PROPERTIES 1. Basin Relief (H) Vertical distance between the lowest and highest points in the basin (max1 H-min. H) Schumn, 1956 2. Relief Ration (Rh) H/Lb where H = basin relief, Lb = Basin length Schumn, 1956 3. Max Relief (maxH) The highest point value of elevation in a drainage basin Schumn, 1956 4. Min Relief (minH) This is the lowest elevation in a drainage basin. Schumn, 1956