hydrographs - for rivers

Question 1

what is peak discharge?

Answer 1

max water in chanel

Question 2

what is rising lim?

Answer 2

increase in discharge - water going into channel

Question 3

what is lag time?

Answer 3

time between peak rainfall and discharge

Question 4

what is base flow?

Answer 4

the normal discharge of river

Question 5

steep incline at start indicates what?

Answer 5

less surface area - little amount of water needs to be added before overfills

Question 6

what does a large drainage basin indicate?

Answer 6

more tribituary’s

Question 7

gentle slope increase at start can mean?

Answer 7

interception of water such as trees
rain stops so little water being added

Question 8

steep decrease can mean..

Answer 8

eveporation from sun so water heats and leaves quickly
could be straight river - water leaves quickly

Question 9

Long lag time

Answer 9

Rural environment - water being absorbed into the ground

Question 10

Short lag time

Answer 10

Urban environment - interception and surface run off