Runoff volume prediction in the megadrigadda reservoir catchment due to past land use/land cover trends-a case study

Abstract One major source of water on the Earth is Surface water resources such as Rivers, Rain water sewers, Streams etc. With the rapid change in the mode of usage of land for various purposes like residential, agricultural, industrial, water storage basins, the volume of Surface runoff due to Rai...

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Published inJournal of physics. Conference series Vol. 2040; no. 1; pp. 12012 - 12021
Main Authors Shiva Kumar, P, Venkata Rao, G, Raghava Rao, Eswara Veera, Kannamu Naidu, CH
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.10.2021
Subjects
GIS
Groundwater Recharge
Land Cover
Land use
Runoff
Surface Features
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Summary:Abstract One major source of water on the Earth is Surface water resources such as Rivers, Rain water sewers, Streams etc. With the rapid change in the mode of usage of land for various purposes like residential, agricultural, industrial, water storage basins, the volume of Surface runoff due to Rain & melting of Snow changes. Estimating such quantities of runoff is essential for proper managing of Water resources over the Earth surface. Runoff estimation of each Mini Water has been done by SCS-CN Curve number method. The required data for this method include Land Use/Land Cover trends of past years, Hydrological Soil Groups, Rainfall trends and AMC Type. Based on the analysis a considerable change in the Groundwater Recharge in the study area is found due to the variations in the Built-up & vegetative cover features ultimately resulting in increasing Surface Runoff there by excess inflow may enter into the Megadrigadda reservoir resulting in Flash floods during monsoons. In the coming years there are chances of the Dam being breached thereby affecting the Visakhapatnam Airport area in its Downstream.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/2040/1/012012