Ground Water Sustainability Presentation

· Galiano Island · Meeting Documents · 2021

Original Trust document · 6,532 KB · SHA-256 fc25889743786f38…

7,648 characters of machine-extracted text. Extraction is automatic and can be wrong; the original governs.

Topics: Fresh water & aquifers · First Nations & reconciliation · Climate & environment — our classification, not the Trust's.

Extracted text (beginning)

Global Groundwater 
Sustainability: 
A Call to Action

Global Groundwater 
Statement 
A global group of scientists, 
practitioners, and experts calling 
for action to ensure groundwater 
benefits society now and into the 
future. 
GroundwaterStatement.ORG 

GroundwaterStatement.ORG 

GroundwaterStatement.ORG 
www.groundwatervisible.org

Gleeson, T., Wada, Y., Bierkens, M.et al.Water balance of global aquifers revealed by groundwater footprint.
Nature488,197–200 (2012). https://doi.org/10.1038/nature11295

Establishing the GroundwaterFootprint of 
the Islands Trust Area is a giant leap in 
evidence-based sustainability planning.
Historically, precautionary principles aided 
planning through a lack of knowledge of 
groundwater recharge, availability, and 
vulnerability.  
However, witha changing climate and 
increasing societal stresses....
We cannot use the past to plan for the 
future. 

Water Champions are 
freshwater stewards that hold 
governments accountable 
POLIS (2019) A Handbook for Water Champions: Strengthening Decision-Making and 
Collaboration for Healthy Watersheds. www.poliswaterproject.org
POLIS
the root of word of “politics” 
a term that represents a rootedness 
in place and community.
the highest of human ideals 
the ability to make decisions 
collectively for the greater good

Mapping isArt.
Understanding freshwater from 
communityvalues and traditional 
knowledge through storytelling 
and lived experience supports 
quantitative science. 
Exploring groundwater resources 
is at the nexus of science,
technology, and art.



All groundwater comes from 
meteoricwater. 
Rain, snow, and fog provide all 
essential freshwater for island life.   
Groundwater is aunique amenity in 
the IslandsTrust Area

A subterranean geological unit that 
can storeand transmit water in 
useful quantities for domestic, 
industrial, and ecological use. 
What is an 
Aquifer? 



Groundwater regions are  
Water Management Units 
for land-use planning and 
water authorizations.







Provides homeowners,
municipalities, industry, and 
farms acessto water stored 
underground
What is a well? 

OCEAN
OCEAN
SALINE
GROUNDWATER
SALINE
GROUNDWATER
FRESH GROUNDWATER
BEDROCK AQUIFER

OCEAN
OCEAN
SALINE
GROUNDWATER
SALINE
GROUNDWATER
BEDROCK
AQUIFER

OCEAN
OCEAN
SALINE
GROUNDWATER
SALINE
GROUNDWATER
BEDROCK
AQUIFER

OCEAN
OCEAN
SALINE
GROUNDWATER
SALINE
GROUNDWATER
BEDROCK
AQUIFER

OCEAN
OCEAN
SALINE
GROUNDWATER
SALINE
GROUNDWATER
BEDROCK
AQUIFER

OCEAN
OCEAN
SALINE
GROUNDWATER
SALINE
GROUNDWATER
BEDROCK
AQUIFER









Healthy watersheds andthirsty trees 
support groundwater recharge and support 
soil moisture through capillary pressure. 
Forests are Freshwater Stewards.

Thirsty forests make healthy soils

How much rain does not make it 
to the ground?

Mapping Wet Areas... 
from Space with Sentinel

Discharge Probability...
The wet areas on the island

Discharge/Recharge 
Coefficient

Groundwater Recharge 
Potential







How much does it rain?

Groundwater Rech

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