Table 1: Danville River Peak Annual Flood Series (2013-2021)
Year
Stage (feet)
Rank
19
2013
2014
2015
2016
2017
2018
2019
2020
2021
12.7
18.1
7
2.2
11.5
3.6
13.2
28
9
Probability
90%
R.I. (years)
1.11
2. Complete Table 1 (above) by doing the following [27 points]:
a. Rank the floods from largest (1) to smallest (9). The smallest flood has already been ranked.
b. Calculate the percent probability of each flood using the P formula from the Instruction. The
probability of the smallest flood has already been calculated.
Hint; n- (number of years) | R.I. - (n+1)/rank | Probability (Rank/(n+1)) x 100
The number of years is 9.