What is the design discharge for the fitted flood frequency analysis for the 10% AEP event?

Based on the following digital elevation model, what is the flow accumulation at the cell shaded in red?

A flowing artesian bore in the Great Artesian Basin (GAB) is

capped and equipped with a pressure gauge. Once stabilised the pressure gauge

shows a pressure (p) of 12,000 Pa. The water is warm at 35 °C

and the density (ρ) is therefore 0.994 kg/L. The distance to the reference plane (z) is 110

m.

For the bore calculate the hydraulic head ( h )

and report the result with the accuracy of two decimals. 

If the total rainfall depth in a 12 hour rainfall event is 96 mm, what is the average exceedance probability (as a percentage)?

Given the following RFFE output, what is the 10% AEP flow estimate?

Estimate the time that initial losses in the catchment have been satisfied based on the following hydrograph: