Introduction

Question 1

Goal:

Answer 1

Estimation of flood variables for assessment of flood risk, planning and design of flood protection structures, etc.

Question 2

Characteristic variables for floods:

Answer 2

1. Flood water level
2. Peak discharge
3. Flood volume
4. Flood duration
5. Flood hydrograph

Question 3

Application Flood water level

Answer 3

Dikes, dams, height of spillways, inundation areas, damage functions

Question 4

Application Peak discharge

Answer 4

Weirs, spillway cross section, culverts, river geometry, etc

Question 5

Application Flood volume

Answer 5

Flood storage capacity of dams, capacity of flood control reservoirs, polders,
inundation areas

Question 6

Application Flood duration

Answer 6

Dikes, inundation areas, damage functions

Question 7

Application Flood hydrograph

Answer 7

Flood control (dams, polder, reservoirs, etc.)

Question 8

Alternatives for estimation of design flood characteristics

Answer 8

1. Statistical methods (flood frequency)
   - From observed flood time series
   - Regionalisation of observed floods
2. Deterministic methods (R-R-Model + Statistic)
   - From design storm (e.g. using KOSTRA)
   - From continuous observed rainfall
   - From synthetic rainfall (e.g. from rainfall model)