Floodplain mapping and understanding flood extent and flood frequency
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Challenge ID: |
HCP-4302 |
Originator: |
Onshore: Hatfield |
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Title: |
Floodplain mapping and understanding flood extent and flood frequency |
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Theme: |
ON 4.3: Environmental monitoring - Natural Hazard Risk Analysis |
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Consortium Lead: |
Hatfield |
Interviewed Company: |
Hatfield |
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Geography: |
ON.REG.00 - Generic onshore |
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Challenge Description |
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What is not possible / not adequately addressed at present? |
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Characterisation of floodplains, flooding patterns and flood hazard is necessary to avoid or mitigate construction and operating risks. Historical flood frequency and extent needs to be incorporated. It can be challenging to obtain elevation data or observe flooding using satellite imagery in forested areas. |
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What effect does this challenge have on operations? |
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Exploration and development in floodplains presents environmental, health and safety risks. Floods can cause significant damage to infrastructure with associated economic impacts. |
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Thematic information requirements: |
Terrain information Land use Land cover Distribution and status of infrastructure Distribution and status of assets Water quantity Topographic information |
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What do you currently do to address this challenge? How is this challenge conventionally addressed? |
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Use of aerial photos, optical imagery, and LiDAR to map floodplains and model water extent in lowland areas. Some use of radar imagery to map observed flood extent. Vegetation can be mapped to define recent active channels in drier areas to antcipate areas that may be influenced by flash flood or freshet events. |
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What kind of solutions do you envisage could address this challenge? |
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Cost-effective floodplain mapping, combining elevation data and optical images. Analysis of historical floods. Accurate delineation of flooded area under forest canopy. |
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What is your view on the capability of technology to meet this need? Are you currently using EO tech? If not, why not? |
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Lack of available historical / archive images and there are challenges to map flooding that occurs below the canopy. Hydrological modelling and use of elevation data remains the most reliable approach. |
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Challenge Classification |
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Impact on Lifecycle (0=none, 4=high): |
Climate / Topography / Urgency: |
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Pre-license: |
1 |
Climate class: |
Generic climate |
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Exploration: |
4 |
Topographic class: |
Not specific |
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Development: |
4 |
Seasonal variations: |
Warmer weather focus |
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Production: |
3 |
Impact area: |
Health and Safety |
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Decommissioning: |
1 |
Technology urgency: |
3 - Immediately (0-2 years) |
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Challenge Information Requirements |
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Update frequency: |
Snapshot |
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Data currently used: |
Local knowledge, field data (including flow monitoring data), optical imagery, radar imagery |
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Spatial resolution: |
Regional |
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Thematic accuracy: |
Not specific |
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Required formats: |
Not specific |
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Timeliness (Vintage): |
Reference data |
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Geographic extents: |
Basin, License |
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Existing standards: |
None |
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