Water System

Question 1

6 Labels of a hydrograph

Answer 1

Peak rainfall, rising limb, peak discharge, falling limb, lag time, base flow

Question 2

River Colorado
2 dam names and dates

Answer 2

Hoover dam 1935
Glen canyon dam 1966

Question 3

River exe

Answer 3

Flows for 82.7km
Steep slopes reducing lag time
84.4% impermeable rock
60% of land use is farming
Flashy regime
Peaty

Question 4

River Colorado regime

Answer 4

High flow during summer due to snowmelt
Dams smoothed out peaks and troughs

Question 5

Uk drought

Answer 5

1975-1976 hit and dry
50% of annual amount of rain
45 days consecutive with no rain
Cheltenham temp exceeded 32’ for 7 days

Question 6

Water cycle equation

Answer 6

Precipitation input= channel flow+ evapotranspiration+/- storage

Question 7

Aral sea

Answer 7

Turn deserts into cotton fields
Moynaq seaside town fishing was huge
60% water didn’t reach fields from 2 rivers that were syphoned of to reclaim desert land
Water too saline for fish to survive
Fish transported from pacific to moynaq so town had jobs

Question 8

Morpeth flood

Answer 8

2008
Prolonged rainfall
River wansbeck burst banks
1000 homes affected
Businesses to close
Environment agency upgrade flood walls
In 2013 a major flood defence scheme
- new flood barriers
-improved drainage systems

Question 9

Somerset levels

Answer 9

2014
Excessive rainfall during winter
Overwhelmed the drainage system
Somerset levels are a low lying floodplain so vulnerable
600 homes flooded
Military deployed
Funding for emergency relief
Increased dredging

Question 10

How air is uplifted

Answer 10

-orograohic: air forced to rise by high land
-frontal: warm air mass and cold air mass meet warmer air is less dense so rises over the coolar more dense air mass
-conventional: when ground surface is overheated and adjacent air heated by conduction so expands and rises

Question 11

River Eden, Eden basin

Answer 11

Deforestation taken place increasing run off
2015 storm devastated Cumbria by flooding
262 mm of rain in 48 hours
Intense farming made ground compact reducing infiltration

Question 12

Mangalore

Answer 12

More than 2/3 of rainfall falls in 3 month each year seasonally uneven

Question 13

River Nile

Answer 13

Northeast Africa longest river in the world flows through 11 countries
2 major tributary white and blue Nile
Minimum flow is in winter, max flow in summer
White Nile provides constant flow all year due to storage of Central African lakes

Question 14

Long Island

Answer 14

New York showed a 530% increase in paved areas led to 270% increase total run off