10 things to know about groundwater: 5&6

Hidden Treasure: 10 reasons to know more about groundwater / 2 priorities to take seriously – briefing note

GROUNDWATER is the water stored in the pores and other openings in rocks below ground. It is a precious resource which must be safeguarded for the benefit of mankind.

5. Some of the groundwater recharge can be safely abstracted for human use

Even the smallest abstraction reduces the natural outflow by an equivalent amount, but a certain level of water abstraction may be judged to be acceptable.

6. Deciding how much groundwater is exploitable depends on many factors. Three main options exist:

  1. Sustainable yield
  2. Mixed strategy
  3. Mining

gw_strategies

What you can do:

Join the conversation through the RWSN Sustainable Groundwater Development community

10 things to know about groundwater: #2

Hidden Treasure: 10 reasons to know more about groundwater / 2 priorities to take seriously – briefing note

GROUNDWATER is the water stored in the pores and other openings in rocks below ground. It is a precious resource which must be safeguarded for the benefit of mankind.

recharge

2. However, from a water resource point of view, what matters is how much natural replenishment, or recharge, takes place

Recharge rates vary from a few to hundreds of millimetres per year. In dry regions recharge ranges from zero to a few mm per year.

In humid regions recharge rates represent a higher proportion of rainfall.

Find out more:

What you can do:

Join the conversation through the RWSN Sustainable Groundwater Development community: https://dgroups.org/RWSN/groundwater_rwsn

10 things to know about groundwater:#1

Hidden Treasure: 10 reasons to know more about groundwater / 2 priorities to take seriously – briefing note

GROUNDWATER is the water stored in the pores and other openings in rocks below ground. It is a precious resource which must be safeguarded for the benefit of mankind.

worldwater1

  1. Groundwater comprises 96% of all liquid fresh water on earth

Think of this groundwater stored beneath our feet as the savings in your bank, or the financial reserves of a nation.

Most (97%) of the world’s water is sea water. Two-thirds of the freshwater, is ice. Groundwater comprises 96% of the freshwater which we can utilise.

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