Torben Bach - danish groundwater mapping and geodata management

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Danish Groundwater Mapping and Geodata Management

Presentation outline • The Danish groundwater mapping campaign • A look at developed data systems and tools • After the mapping is over - new set of challanges … • Summing up

Torben Bach*, Tom Martlev Pallesen*, Niels-Peter Jensen*, Rolf Johnsen**, Tom Hagensen***

* I•GIS A/S ** Central Denmark Region *** Danish Ministry of Environment, Nature Agency

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Denmark in numbers

• Area 43.000 km2

• Population 5.500.000

• Highest elevation 176 m

• 2/3 farmland

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DANISH GROUNDWATER MANAGEMENT IN A HISTORICAL PERSPECTIVE

• 1926: First law to protect the groundwater against contamination • 1986: Water environment plan with supervision and improvements of • the groundwater protection • 1994: Plan with further restrictions on pesticide permission • 1998: Water environment plan II with further restrictions • 2000: EU Water Framework Directive or WFD (2000/60/EC) to • establish a framework for the protection of all waters including rivers, • lakes, coastal waters and groundwater. • 2004: Implementation of the Act of Environmental Goals which is the Danish

implementation of EU WFD

Long tradition on protecting groundwater

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THE DANISH LAW OF GROUNDWATER PROTECTION (1998) • Drinking water must be naturally clean and untreated groundwater • Categorized recharge areas

• Recharges area of major value (40%) • Recharges area • Recharges area of limited value

• Dense groundwater mapping (40%) • Resource today and future • Vulnerability towards pollution

• Funding • Taxes on groundwater withdrawals • € 0,07 pr. m3 ~ € 15 mil per year

• Time perspective • Mapping finished in 2015, total cost approx. € 250 mil

*see Thomsen, R. & Sondergaard, V (Tech. Ed) & Klee, P. (Ed.), 2013. Greater water security with groundwater - Groundwater mapping and sustainable groundwater management. The Rethink Water network and Danish Water Forum white papers, Copenhagen. Available at www.rethinkwater.dk”

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ADMINISTRATION OF MAPPING

The Ministry of the Environment, Nature Agency • Funding is used through a multi disciplinary EU-framework agreement

with 15 private consultants • Recommendations for future use and protection of the water resources

The Municipalities • Manage and administer regulations • Execute the recommendations through detailed protection plans to

ensure naturally clean water supply

Examples of other stakeholders and areas benefitting from the results : • Danish water utilities • Danish Regions – contaminated soil • The Danish Geological Survey – GEUS • City and infrastucture planning

…many groups benefit from the geological models and data generated

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*Modified after Thomsen, R. & Sondergaard, V (Tech. Ed) & Klee, P. (Ed.), 2013. Greater water security with groundwater - Groundwater mapping and sustainable groundwater management. The Rethink Water network and Danish Water Forum white papers, Copenhagen. Available at www.rethinkwater.dk”

A mapping process with tools and supporting data management has been developed

1

3

2

4 Data Collection

Data Processing

3D Geological Modelling

Hydrological Flow Modelling

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Geophysical Mapping Technologies Software Tools and Databases

SkyTEM

CVES

Seismic

PACES

*See J.C. Refsgaard et al. GROUND WATER 48, no. 5: 633–648

New Tools and Technologies • New surveying technologies • New software tools • Backend information logistics • An Integrated water groundwater resource

management system

SW Tools and Databases • Seamless integration • Ensures traceability

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NEW DATABASES

• GERDA: Geophysical database.

• Jupiter. Borehole database

• Model Database. Geological models.

All open and free - ensures a GW management using the best data.

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NEW SOFTWARE TOOLS

• Commercial Software, developed as part of the mapping campaign.

• Seamlessly integrated and through underlying data structures.

• A tested and proven fast mapping process, from geophysical data to geological knowledge and hydrological model.

GeoScene3D. 3D data integration and geological modelling. • The geologists go-to tool • integrated modeling using all available data types

and knowledge in an area. • Visualization of geoelectrical data, seismic data,

chemical data, boreholes, logs, infrastructure etc. in one 3D view.

• Integrated views on 2D cross-sections, GIS and full 3D

• Full support of a variety of data formats, including GERDA and Jupiter

• Tools supporting assisted for fast AEM interpretation and export to further processing in flow modelling etc.

• Developed by I•GIS

Workbench: Geoelectrical data processing and inversion. • The geophysicist go-to tool • fast QC, processing, inversion and geoelectrical

data • Integration of state-of-the-art numerical analysis

with GIS and database management • Stores data and inverted models results in GERDA

format • Developed by Aarhus University

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The mapping campaign is now over –new challenges ahead….

• Easy Access to models and data for administrators in municipalities

• …non technical users with administrative responsibilities • …facilitate information sharing to politicians and normal citizen • …Danish Regions working with soil contamination • …Large infrastructure projects, e.g. metro

• Online updating of geological models

• …new boreholes and geophysical data will become available over time • ...the geological model repositories at GEUS are static

• Organizational specific repositories

• …need for organization specific “sandbox” to work in • …not all types of geological models are uploaded to GEUS. • E.g. at private consultancies, small contamination models, temporary draft

models, or non-public models

There is a need for some dynamic and less static geological model repository

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In cooperation of a set of Danish Regions, The Ministry of the Environmental and a series of progressive municipalities are developing a new set of tools that compliment the existing systems to meet these challenges. The Goal: To combine the intuitive 3D modelling software GeoScene3D, with a dynamic, model repository enabling easy access to models and data, easy sharing AND easy updating of models.

Municipality

Nature Agency

Waterworks

Private Consultant

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Developments currently in progress to overcome these challenges…. • Step1: Online data accessible directly from GeoScene3D

• For easy of use and avoiding technical issues • For updated data in the modelling

• Step2: Organization specific geological model repository

• A sandbox for models of various sizes, quality and targets • Administered by the user organization. • Shareable with outsiders, utilizing user permission roles (Read/Write/Administrator)

• Step3: Update models directly in online repository through GeoScene3D

• Online Geological Modelling • Sharing models between organisations and stakeholdes while they are being

constructed • “Dynamic modelling”

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Step1: Online data accessible directly from GeoScene3D

Organizational Specific GeoCloud

Currently implemented: • Geological Survey of Denmark and Greenland

• The official GERDA and JUPITER • Ministry of the Environment, Nature Agency • Central Region • Municipality of Aarhus

GERDA Geophysics

JUPITER Boreholes

2D Grids DEM

Geology Rainfall

GIS Maps

3D Grids Geophysics

Voxel Models

GEOGIS Chemestry

Completed

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Step2: Organization specific data and geological model repository

Online Repository at www.geocloud.dk

Library of existing models

Startup Templates for new models

Enables : • …fast access to existing models • …easy start on new models with predefined

• GIS Maps & DEM data • Wells & Chemistry • Etc.

Completed

http://www.geocloud.dk/

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Step3: Update models directly in online repository through GeoScene3D

Direct Online Modelling • Collaboration on modelling projects • Fast information to stakeholders • Web access to work progress

Modelling Project

TO DO

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The road a head…

Develop tools an IT infrastructure for mapping

Ensuring distribution and easy access

Ensure updated models

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Summing Up

We have shown • Overview of the data management in Danish groundwater mapping campaign • A look at developed data systems and tools • A look at new tools in development for the next step in DK groundwater management • Come join us in our efforts and development

Thank you!

For further information, please contact Torben Bach, [email protected]

Presentations & Public Speaking

Torben Bach - danish groundwater mapping and geodata management