GIS-based flood hazard zoning of Mahanadi Command Area in Cuttack District, Orissa, India | |
| Author | Mohanty, Choudhury Rudra Charan |
| Call Number | AIT Thesis no.IR-92-14 |
| Subject(s) | Geographic information systems--Congresses Geographic information systems Flood damage--India--Orissa |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. IR-92-14 |
| Abstract | Floods are natural and normal phenomena. They are catastrophic simply because man occupies the flood plain. Despite the heroic structural measures, flood damages continue to rise in Mahanadi flood plain in Cuttack District. The non-structural measures can be integrated with the structural measures to mitigate the flood hazard. Flood hazard zoning is the primary tool for non-structural measures i.e. flood plain planning and management. In this study, vector based GIS model ARC/INFO is used to develop a flood hazard map for Mahanadi Command Area. Four data layers such as population density, land use, evacuation facilities, soil erodibility and the flood plain are integrated in the Factor Combination Method to identify the high, medium and low hazard zones in the Mahanadi flood plain. A flood frequency analysis of the Mahanadi river system in Cuttack district was carried out for nineteen gauge stations located on different tributaries with each annual maximum series being comprised of 29 observations. The models used for this analysis were Gamma2, Pearson type ID and log-Pearson type III distributions. Methods of Moment was taken for the parameter estimation. A flood damage model was developed to predict the flood damage for a given stage-height. Three existing models (the exponential, multiplicative and reciprocal) were fitted with the two variables, annual flood damage cost and annual peak stage-height of undivided river Mahanadi at Naraj railway bridge. The results of the study conclude that the sub-divisions like Cuttack Sadar and Jagatsinghpur are more sensitive towards flood damage as most of the areas from these two sub-divisions are coming under high hazard zone. So far as the flood frequency analysis is concerned, the Pearson family distributions are well fitting to most of the flood series. Regarding the flood damage model, the correlation coefficient comes to be highest for the exponential model. |
| Year | 1993 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. IR-92-14 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Food, Agriculture and Natural Resources (Former title: Department of Food Agriculture, and BioResources (DFAB)) |
| Academic Program/FoS | Irrigation Engineering and Management (IR) |
| Chairperson(s) | Liang, Sheng;Murty, V.V.N.; |
| Examination Committee(s) | Tang, John C.S.;Vilas Wuwongse; |
| Scholarship Donor(s) | Government of Norway; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1993 |