M1 CONCEPTS Flashcards
Percentage of water in Earth
71%
Percentage of water in earth which is ocean
97.2%
Percentage of water in groundwater, surface water, soil moisture, and atmosphere
0.65%
As water is pumped out
of ground, saltwater can move inland to “pollute” the well.
Saltwater Intrusion
The basic land unit of the water
cycle.
“That area of land, a bounded hydrologic system, within which all living things are inextricably linked
by their common water course and where, as humans settled, simple logic demanded that they become part of a community..”
Watershed
refers to the volumetric abundance, or lack thereof, of water supply.
Water Scarcity
refers to the ability, or lack thereof, to meet human and
ecological demand for water.
Water Stress
when annual water supplies drop below 1,000 cubic meter per
person
Water Scarce
the ability to use water in sufficient quantities and quality from the local to the global scale to meet the needs of humans and ecosystems for the present and the future to sustain life, and to protect humans from the damages brought about by natural and human-caused disasters that affect sustaining life.
Water Resources Sustainability
Primary Water Stressors
- Rapid population growth and urbanization
- Climate change
refers to the probability of an entity experiencing a deleterious water-related event.
Water risk
The way to cope to the changes is to UNDERSTAND deeper, MANAGE better, and develop SUSTAINABLY the watershed environments through
Integrated Water Resources
Management
Challenges to Water Resources Sustainability
- Urbanization
- Droughts and Floods
- Climate Change
- Consumption of Water (Virtual Water and Water Footprint)
concept was introduced by Hoekstra and Hung (2002) as a consumption indicator of water use in addition to the traditional production-sector indicators of water use.
Water footprint
a measurement of the continuity of the flow of water through a
system or control volume.
water budget, hydrologic budget, or water balance
Watershed Demands
- Fishery
- Farming
- Tourism
- Water Supply
- Hydropower
- Biodiversity