3.1.5 - Deficit

Question 1

CAPE TOWN - TABLE MOUNTAIN

Answer 1

Low rainfall from 2015-2018.
Water used for agriculture instead of being made available for people.
Dams less than 1/4 full.
Limited tourism.
Desalination.

Question 2

COLORADO RIVER

Answer 2

Arizona, California and Nevada agree to draw less water from river in exchange for $1.2Bn in federal funding.
Reduction of 13% by 3 states.
Threat of water cuts if no agreement.
Hydroelectric could be stopped if not resolved.

Question 3

JAPAN - Heatwave 2018 and 2022

Answer 3

2018
Declared as natural disaster.
Less than 1/2 schools equipped with air conditioning.

2022
Urged to switch off lights to conserve electricity for air conditioning.
3% buffer for stable supply.

Question 4

Groundwater recharging

Answer 4

Spreading water
Recharging well
Induced infiltration

Question 5

OGALLALA AQUIFER

Answer 5

North America’s largest aquifer.
Covers 8 states.
Dropped on average 1ft a year since 1996.
Can take more than one year to recharge an inch of water.
Plan to cut 20% over 5 years.
Long term forecasting needed.

Question 6

ARAL SEA

Answer 6

Secured World Bank loans to restore water source.
Focused on repairs and construction of new dam splitting the North and the South.
18% increase in volume since completion.
Decreased salinity.