Lesson 4 - Storm Hydrographs Flashcards
1
Q
What is a storm hydrograph?
A
Graph which depicts changes in flow + discharge within short time periods
2
Q
What are the 2 types of storm hydrograph?
A
Subdued
Flashy
3
Q
What are the characteristics of a subdued hydrograph?
A
Long lag time
Steady rising limb
Low peak
4
Q
What are the characteristics of a flashy hydrograph?
A
Short lag time
Steep rising limb
High peak
5
Q
What is the rising limb?
A
Shows how quickly discharge rises after storm
6
Q
What is the lag time?
A
Time difference between peak rainfall + discharge
7
Q
What is the recessional limb?
A
Reducing limb following peak flow/discharge
8
Q
What is bankfall discharge?
A
Level of discharge above which flooding will occur
