Identification of Development Dynamics in the Krishna Eastern Delta and its Future Impacts on Water Availability and Quality with Focus on Soil Productivity and its Degradation
Nekkanti Haripavan1, Nandyala Sivakishan2
1Nekkanti Haripavan, Assistant Professor, Gudlavalleru Engineering College, Gudlavalleru (Andhra Pradesh), India.
2Nandyala Sivakishan, Associate Professor, Gudlavalleru Engineering College, Gudlavalleru (Andhra Pradesh), India.
Manuscript received on 22 April 2019 | Revised Manuscript received on 01 May 2019 | Manuscript Published on 05 May 2019 | PP: 157-160 | Volume-8 Issue-2S2, May 2019 | Retrieval Number: B10340182S219/19©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Water is a precious resource for life to exist on planet Earth. Already the water demand exceeds supply in many parts of the world. The water resources are finite and currently under tremendous pressure due to vagaries of nature and population growth. The over-exploitation and mismanagement of this resource is exerting detrimental impact both in the catchment and command areas. The Water Use in the Krishna District is likely to increase at least by 50% due to rapid population growth, industrialization and agriculture in the next 20 years. The current emphasis is more on economic development and not on environmental safety and sustainability. Many river basins are becoming closed in South India, in which additional water is conserved at various upstream points affects the people using the water at downstream side and brings in large conflicts between upstream and downstream users. It is evident that the closure of Krishna basin and the resulting drastic shortfall of irrigation water to the Krishna river delta and land use dynamics had their serious impacts on crop, land, soil and environment on a decadal scale. We have already witnessed how the Kolleru fresh water lake ecosystem has deteriorated in a short span of two to three decades. Mismanagement of water resources is causing salt water intrusion in the coastal regions of maritime states. Ingress of sea water deep in to inland aquifers, soil salinity due to use of chemical agricultural inputs and brackish water aquaculture are leading to land degradation. In this view, timely and reliable data of the extent, spatial patterns, and nature temporal behaviour is a pre-requisite. In the light of above, an updated digital spatial database of Krishna district has been generated on lithology, structure, geomorphology and hydrology by adopting geospatial technologies coupled with traditional or conventional data sets for identifying ground water potential zones in Krishna district. This paper aims at highlighting some insights into the groundwater and surface water dynamics of the the Krishna Eastern Delta and the Inter-deltaic plain of Kolleru Lake system.
Keywords: GIS, CRDA, NBSS.
Scope of the Article: Soil-Structure Interaction