Generate a powerpoint slides in $5/5/5$ format $($not more than $20)$ for a seminar on Time Series and hydrological modeling. The slides should contain the following elements:

$1-$ Concept of a Time Series, its definition types, components, discernible features etc.

$2-$ Autoregression, Autocorrelation, Autocovariance and correlogram their definitions, formulae where applicable and uses in Hydrological modeling

$3-$ AR$,$ MA and ARMA models and the reason that warrants for the appropriate selection of each

$4-$ Current and Emerging interest in hydrological modeling in Nigeria

$5-$ Steps in generating new flows using the appropriate model from the aforementioned models using Kanos $25$ year annual rainfall data to design a rectangular culvert