application of remote sensing and gis for flood risk analysis: a case ...

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IRJC International Journal of Social Science & Interdisciplinary Research Vol.1 Issue 11, November 2012, ISSN 2277 3630 Fig 1. Location Map Figure 2. A schematic diagram of the Krishna River basin, showing all proposed inter-basin water transfers in and out of the basin (black lines with numbers) together with flow measuring points (stations) for which some observed flow data were available for the study. Link numbers are circled and correspond to the overall NRLP numbering system. Station numbering is for identification purposes only. Due to the low quality, short records or inappropriate location relative to the link points, only a few of the shown stations are usable. These include record at station 3 (Krishna at Agraharam) and part of the record at station 1 (Krishna at Vijayavada). 57
IRJC International Journal of Social Science & Interdisciplinary Research Vol.1 Issue 11, November 2012, ISSN 2277 3630 A study of various types of flood and their characteristics in general will be required to understand the characteristics of flood in the villages of Raichur district under Krishna and Tungabhadra river valley region. This study will be carried out from secondary sources. However primary survey will be conducted 1. To study the characteristics, causes and impact of flood affected villages in the study area 2. To study the efficacy of existing Post flood rural planning and development strategies for the flood affected villages in the study area. As the government has intervened in the planning and development processes in the flood affected regions some secondary information will also be available, the same will be used to understand the characteristics, causes and impact of flood. Based on the research study effective Post flood rural planning and development strategies will be proposed for the type of flood which generally prevailed in the study area. To understand the causes for flood in the villages a detailed study will be carried out on the flood phenomena in the study area by referring to its past recorded information. Also a field survey (general enquiries and observation) will be conducted to study effects of flood on the village settlements. The effect of flood has been studied categorically in terms of its implications on social, economic and physical structure of villages. A set of data will be collected regarding the planning measures that have been undertaken during the flood and on the post effects of flood. Based on the data analysis and literature case studies, some planning suggestions were proposed for the effective rehabilitation processes of a flood affected villages. The study will be carried out by collecting data, from both primary and secondary sources: ‣ Detailed mapping of the settlement pattern and topographic features for delineating the study area. ‣ Hydrology and geological information to identify the flood zones, major drainage system of the region and other aspects related to select the proposed area for rehabilitation. ‣ Causes of the flood and their effects on socio-economic and physical structure of the village. ‣ Data that can support identification of problems in the planning measures under taken by the concerned authorities and their efficacy in attaining the requirements of the flood victims. Three Methods of GIS Linkage According to a literature review of GIS applications in computer modeling conducted by Heaney et al. (1999) for the U.S. Environmental Protection Agency (EPA), Shamsi (1998, 1999) offers a useful taxonomy to define the different ways a GIS can be linked to computer models. The three methods of GIS linkage defined by Shamsi (2001) illustrated in Figure 2 are: 58
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