river terminology part 2

Question 1

episodic river

Answer 1

special type of non perennial river , only flows after heavy rain

Question 2

exotic river

Answer 2

is a perennial water but gets its water from upstream not the water table

Question 3

flood surge

Answer 3

water level rising rapidly after rainfall

Question 4

friction index

Answer 4

amount of friction water experiences with the river bed

Question 5

graded stream

Answer 5

river with smooth concave longitudinal profile able to carry its load along the entire length of the river

Question 6

headward erosion

Answer 6

due to the river eroding down into it own course the gradient gets steeper which will eventually lead to river getting longer in length

Question 7

hydrograph

Answer 7

graph showing runoff against time

Question 8

incised river / meander

Answer 8

river that has eroded down to its own river bed

Question 9

interfluve

Answer 9

high land between two streams in the same drainage basin

Question 10

knick point

Answer 10

sharp change in angle of slope

Question 11

lag time

Answer 11

time taken between max rainfall and max runoff

Question 12

lateral erosion

Answer 12

river slows down near base level of erosion and spreads sideways

Question 13

levee

Answer 13

deposition embankment found along the bank of rivier in the lower course

Question 14

longitudinal profile

Answer 14

view from top to bottom of river

Question 15

meandering channel

Answer 15

river twisting side to side usually in lower course