Flood Frequency Analysis Using the Gumbel Distribution
Journal Title: International Journal on Computer Science and Engineering - Year 2011, Vol 3, Issue 7
Abstract
This paper presents results of a study carried in Zimbabwe aimed at analysing the frequency of Nyanyadzi River floods using the Gumbel distribution. Extreme floods over recent years had washed away fields, destroyed infrastructure and killed animals. It was hypothesised that Nyanyadzi flood flows obey the Gumbel distribution. The scale and shape parameters of the distribution were estimated using method of moments. Maximum instantaneous flow data covering 30 water years (1969-1999) for station E119 on Nyanyadzi River were collected from the Zimbabwe National Water Authority (ZINWA). A Chisquare χ2 test revealed no significant (p =1.000) differences between recorded and predicted flood flows. Due to goodness of fit of the Gumbel distribution, it was assumed to be appropriate for modelling frequency of Nyanyadzi River floods. The magnitudes of the 100 and 200-year floods were estimated to be 276 and 310 m3/s respectively.
Authors and Affiliations
Never Mujere
Dynamic Approach for Data Scrubbing Process
It is very difficult to over-emphasize the benefits of accurate data. Errors in data are generally the most expensive aspect of data entry, costing the users even much more compared to the original data entry. Unfortunat...
COMPARATIVE STUDY OF BROWSER BASED OPEN SOURCE TESTING TOOLS WATIR AND WET
Recently, web browser based applications have become very popular in many domains. As an important method to ensure the quality of Web applications, Web testing attracts more and more attentions in the academic community...
Neural Network approach for image retrieval based on preference elicitation
Multimedia technologies have been developing rapidly over the last few years and have yielded a large umber of databases containing graphical documents. Tools for content-based search of graphical objects have been the s...
Great Circle Distance Methode for Improving Operational Control System Based on GPS Tracking System
Fleet monitoring conducted to determine the position of the movement of the fleet to a point of reference. There are three applications that are necessary for the implementation of the monitoring system. They are Global...
SURVEY OF DIGITAL WATERMARKING USING DCT
Digital Watermarking is not a new name in the technology world but there are many new issues arise related with watermark. This paper surveys recent advances in watermarking techniques in digital images. The aim of digi...