28 March 2017

Visualising flooding: a view from the street

Flood & Coast 2017

David Ramsbottom and Gordon Glasgow

© HR Wallingford 2017

View from a tree?

28 March 2017

Burnham on Sea, Somerset

1607 – Early evidence of coastal hazard

© HR Wallingford 2017

Brisbane flood map

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© HR Wallingford 2017

Examples of 3D visualisations

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© HR Wallingford 2017

Flood map for planning: Oxford

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© HR Wallingford 2017

Current flood communication: Oxford

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© HR Wallingford 2017

2007 flood: Botley Road

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© HR Wallingford 2017

2007 flood: Bulstake Close

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© HR Wallingford 2017

2007 flood: Binsey Lane

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© HR Wallingford 2017

2007 flood: Osney Mead

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© HR Wallingford 2017

Some concerns

Validity and realism of the modelling is sometimes questioned

Some stakeholders (who live on the ground) have difficulty relating

to aerial images

Difficult to discern how flood predictions relate to observations

Easier to relate to a flood if there is a view from the ground

28 March 2017

© HR Wallingford 2017

A view from the street

Augmented reality: linking spatial data with photographic images

Link numerical modelling results:

Use of Google Street View

Use of actual photographs

Image and model data processed over an internet connection

Results provided on-site to a phone, tablet or computer

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© HR Wallingford 2017

Impacts of flooding on a street

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Predicted peak

flood level

Predicted future

scenario

Observed flood

level

© HR Wallingford 2017

Impacts of flooding on properties

28 March 2017

Predicted peak

flood level

Predicted future

scenario

Observed flood

level

© HR Wallingford 201728 March 2017

Impacts of flooding on properties

Observed flood

level

Predicted peak

flood level

Predicted future

scenario

© HR Wallingford 2017

Benefits

Adds credibility to model results for observed floods by showing

results at street level: improves confidence

Stakeholders can contribute to model calibration

Use to demonstrate impacts of scenarios:

Flood levels for events of different magnitudes

Reductions in water levels due to scheme

Impacts of climate change

Use to plan and design flood resistance measures

28 March 2017

28 March 2017

Thank you

David Ramsbottom and Gordon Glasgow