GIS overlaid with flood depth information.
Geographic Information Systems (GIS) have become the mainstays for
effective and efficient analysis of spatial environmental data,
acting as a tool for management and decision-making.
Mott MacDonald has built up years of experience in the use of
GIS and Remote Sensing across a
broad spectrum of environmental projects, using the latest
techniques and software to ensure that our work is supported by the
very best data and analysis available.
We pride ourselves on using appropriate technologies to improve our
performance and the quality of our services through well practised
techniques and innovation.
GIS
Mott MacDonald offers a range of skills and services in the
analysis and interpretation of geographic information. Our spatial
analysis services include:
- High quality thematic mapping outputs
- Data manipulation and validation
- Use of GIS systems as a spatial data library
- 3D visualisations
- Analysis and interpretation
Flood risk mapping and flood hazard assessment
We have developed techniques that utilise the latest
breakthroughs in technology – integrating digital terrain models
and 2D river modelling software in GIS. When flooding information
is combined with land use, population density and economic activity
information, it is a simple matter to produce flood hazard maps.
Such maps help support planning authorities’ decisions and
development plan preparation, and provide a consistent risk-based
approach to sustainable development.
Dam breach assessment
We use Digital Terrain Models in combination with results from
hydrodynamic modelling to identify zones of flood hazard from
discharge calculations. These are further analysed to show areas of
flooding, depth of flooding and maximum flow velocity.
Groundwater modelling
We use geostatistical spatial interpolation techniques to identify
groundwater levels over large regions from borehole samples.
Volumetric calculations
We use Triangle Irregular Networks to create 3D models and
calculate volumes of spoil from dredging activities, and cut and
fill from embankments and landfills, based on detailed
topographic/bathymetric models.
Slope stability modelling
We use GIS to calculate stability of slopes with applications for
both development potential and disaster management.
Constraints and opportunities models
We develop strategic models identifying areas of development
opportunity and constraint, quickly and efficiently.
Visual impact assessment
We develop ‘visual envelopes’ using 3D topographic models, these
allow rapid assessment of visual impacts, from potential
developments and measures that may alleviate any visual impact.
