Impact assessment: the determination of the economic, social, environmental and other costs associated with flood damage
Assessement is a process which can not be fully automated. It requires a wide variety of skills and familiarity with the area under study. What can be automated is the overlay of affected areas with property, infrastructure, land-use and other coverages to identify impacts.
We can refer to property databases, and obtain information about other areas and objects of interest and attach evaluations. We can even attach different evaluations for different conditions, e.g. Flood depth, flood risk.
The assessment process allows for the insertion and retreival of information in a database. Apart from providing overlay capabilities and the ability to extract relevant information from evaluations subject to certain constraints, the data model allows for the specification of geo-referenced objects of interest, constraints and consequent values. It also provides a means for the overlay process to retrieve information for produce reports
It allows GeoNet to:
- Identify layers, areas, lines, point features of interest
- Assign impact constraints and related costs to these entities of interest
- Identify the impacting layer which represents a flood or erosion scenario
- Determine the target layers containing entities of interest
- Overlay the impacting and target layers creating affected entities
- Evaluate affected entity impact constraints and assign a cost
- Produce a quantitative impact report