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Rainfall intensity-duration-frequency analysis for Southeastern Nigeria G. Mbajiorgu Abstract Inadequate hydrologic data and the need for proper planning of water resources development have forced engineers to analyze available data more critically. This is particularly so in developing countries.
The Intensity-Duration-Frequency IDF relationship is one of the most commonly used basis for water resources planning and development. This study analyzed rainfall data and characteristics for locations in seven states of Southeastern Nigeria.
IDF curves were developed for these locations using two methods Graphical and Statistical and the results were compared.
Break-point, short duration, rainfall data are not generally available in the historical records at the locations. Generalized accumulated rainfall patterns developed by USDA Soil Conservation Service were matched with rainfall data for the locations of study, and the advanced pattern had the best fit with the observed characteristics and was used to break down recorded daily totals into shorter duration rainfall data.
The method of annual maxima series was used to select data sets for the rainfall analysis. In the statistical method, the Type I extreme-value distribution Gumbel was applied to the annual maximum series for each of the seven stations to estimate the relevant parameters of the IDF model.
IDF data developed from the graphical and statistical methods applied were very close for the lower return periods of two to ten years, but differed for higher return periods of 50 to years.
The data developed by either of the methods will facilitate planning and design for water resources development in Southeastern Nigeria. Rainfall intensity-duration-frequency analysis for Southeastern Nigeria. CIGR Journal,12 1:The average annual rainfall in Enugu is around 2, millimetres (79 in), Consequently, the area called Enugu State as well as the rest of Nigeria, which was once a self-sufficient net exporter in agricultural produce, must import food.
Education. Nigeria and even Enugu State begun to feel the effects of climate change as the frequency and intensity of extreme events like droughts and floods have increased. Farmers in the study area pointed out that the manifestations of climate change are mainly through decrease in rainfall pattern, increase in pest infestation in both crops and animals.
Apr 20, · Nigeria's Geography.
Nigeria is considered to have a tropical climate overall, but within that are many diverse physical regions of the country. early human settlement patterns in nkanu east local government area, enugu state by egbo, ogechukwu c.
pg/ma/12/ a project report submitted to the department of archaeology and tourism, faculty of arts, university of climate and vegetation of nkanu east local government area - - Enugu State was created on August 27, with the city of Enugu as its capital.
Enugu State derives its name from the capital city, ENUGU (top of the hill) which is regarded as the oldest urban area in the Igbo speaking areas of Southeast. Annual Weather Averages in Makurdi. Makurdi is miles from Enugu State, so the actual climate in Enugu State can vary a bit.
Based on weather reports collected during –