Introduction to theGlobal Groundwater Monitoring Network (GGMN)

Programme

Government of The Netherlands

Claudia Ruz VargasData Storage Workshop, April 2020

IGRAC - Global Groundwater Centre

• IGRAC facilitates and promotes international sharing of information and knowledge required for sustainable groundwater resources development and management worldwide.

• IGRAC is UNESCO Global Groundwater Centre, it worksunder the auspices of WMO and it is supported by the Government ofThe Netherlands. IGRAC is also a UN-Water Partner and works closelywith IAH.

• Since 2003, IGRAC provides an independent content and process support, focusing particularly on (transboundary) aquifer assessment, groundwater monitoring and information & knowledge sharing

Groundwater recharge due to changes in: • distribution of global precipitation• evapotranspiration patterns• snowmelt regimes.

Groundwater quality and groundwater storage due to: • sea level rise / seawater intrusion

Groundwater demand due to: • population and wealth growth • food demand• land use change.

Groundwater in the Changing World

State of aquifers (both quality and quantity of groundwater) is changing in time due to change of various environmental processes and human impacts.

Global Groundwater Monitoring Network programme is initiated to improve quality and

accessibility of groundwater monitoring information.

GGMN - Global Groundwater Monitoring Network

GGMN People Network GGMN Portal

GGMN People Network

Baku (2019)

Upload, store, visualize, download data

GGMN Portal: basic functionalities

Digital Elevation Model

Hydrogeological Map

Land cover

Transboundary Aquifers

GGMN Portal: Overlay Maps

Groundwater station: an example

• Monitoring station information

– Additional station information

– Include information for each filter• (multiple filters for one

station possible)

• View time series

• Download time series

GGMN Regional: display groundwater levels max, mean or change over time

Time series analysis

• Time series analysis can be performed for each point measurement location to better understand temporal changes of groundwater levels

• The time series analysis is a step-by-step procedure to identify trends, periodic fluctuations, autoregressive model and additive model

• Time series analysis helps defining optimal monitoring frequencies, one of the key components of groundwater monitoring network design.

Additive Model = Xtrend+ Xharmonics+ Xautoregressive

GGMN Portal: basic functionalitiesTime series analysis + design of sampling frequency

• The GGMN portal is developed to assist in capacity building and improve groundwater availability

But also…

• to assist countries that do not have an online database

• Access to your country/organization data

• Protected environment

Countries/organisations in GGMN

• use system as a groundwater database (restricted access)

• share aquifer data internationally with a restricted access to others

• open access

GGMN Portal: Public and Protected Environments

Connecting National Monitoring Networks in one system using Sensor Observation Service (SOS), a web-service to query real-time

sensor data and time series

GGMN Portal: Sharing (not exchange)

Groundwater monitoring data in national database

Sensor Observation Service (SOS)

Reformatting

Data upload

Data download

National groundwater monitoring

Data sharing & dissemination

Automatic sharing

Manual updating

GGMN Portal Workflow

Or local storage and processing

Automatic sharing vs manual updating

GGMN App

• A new smartphone application specially made for the monitoring of groundwater levels

• Easy to use for not-registered users, who can store data on wells and groundwater levels in their smartphones

• Registered GGMN users have access to the observations stored in GGMN

The app prepares all needed files to integrate the data to the GGMN platform

Excel or GIS skills are not needed anymore to upload monitoring data in GGMN

Collected data can be securely stored on

personal server/hard disk

The app works also without internet, allowing the user to upload the data when internet is available directly or via computer -> relevant in remote areas

GGMN App

With one click: GGMN data in QGIS for further data processing and analysis

• QGIS is an open source Geographic Information System (GIS), can be easily installed on your computer (or via USB)

• Continuous development of QGIS

– Worldwide (hydrological) community improving the software and develop new tools

• Good online support,

YouTube, GitHub, Stack Overflow

GGMN and QGIS

Exchange data between online GGMN Portal and a GIS system for offline processing

Upload groundwater maps created in QGIS back into

GGMN Portal QGIS –Geographic Information System

Spatial interpolation on groundwater levels

Thank you for your attention!