Umudike Journal of Engineering and Technology

This paper presents an evaluation of the impacts of climate change on tidal level rise in the coastal area of Lagos State. The meteorological data such as air temperature, relative humidity, wind speed, rainfall and tidal level rise were obtained from Nigeria Meteorological Agency (NIMET),Oshodi spanning a period of 1992-2013. The meteorological parameters were subjected to statistical analysis to obtain the maximum, minimum, mean values, standard deviation, variance, coefficient of variation, coefficient of skewness values. Autoregressive moving-average (ARMA) was also adopted to fit the parameters by considering the Tidal level rise as the dependent variable while other parameters were the independent variables. The analysis revealed the value of correlation coefficient as 0.64, which is an indication of a good fit. an upward trend were exhibited between the predicted tidal level rise with rainfall and relative humidity. The relationship of predicted tidal level rise with time shows an upward trend, which implies that there is tendency for increase in tidal level rise in future. The Pearson type III distribution revealed return period of 23 and 25 year for the maximum value of tidal level rise and rainfall depth of 1250mm and 368 mm respectively. The statistical distribution also revealed that tidal level rise and rainfall value of1400mm and 430mm respectively is rear.