Vol. 12, Issue 3 (2023)

Author(s):
Mallikarjuna Muddappa, Premanand BD and Rahul Patil

Abstract:
The present study was taken up in the Hirerayakumpi watershed, Deodurga Taluka, Raichur district Karnataka state at 16⁰ 23’18” North latitude and 77⁰ 09’ 29” East longitude. The drainage network of micro watershed was delineated and the parameters required for morphometric analysis are computed using by QGIS 2.6.1 software. The drainage pattern of the study area is dendritic with stream order 5^th (V) and lower streams order conquered in the selected watershed. The bifurcation ratio reflecting a geological and tectonic characteristics of the watershed was estimated at 1.45 indicate that the watershed has suffered less structural disturbance and the drainage pattern has not been distorted by structural interruption. The drainage density of watershed is 2.54 km/km² which indicates the closeness of spacing of channels, thus providing a quantitative measure of the average length of stream channel for the whole watershed. The values of form factor and circulatory ratio of watershed indicate that the watershed is approaching towards the fern shape. The values of length of overland flow of the watershed indicate that the areas are associated with high runoff and less infiltration. The low value of ruggedness number indicates that watershed is having gentle slope. The research of morphometric analysis study helps to plan the selection and adoption of the soil and water conservation measures and the crop management practices in the prospect.