Hydro-GIS

UCL students on field trip

students at Pangbourne

Hydro-GIS Ltd hosted UCL students during a hydrology field trip to Pangbourne in Berkshire (image). The trip focussed around a flood risk assessment exercise for a proposed hotel development in Pangbourne village centre, close to the River Pang and River Thames.

Strategic flood risk assessment presented

Dr Harvey Rodda presented at the inaugural neighbourhood planning alliance seminar held in Lichfield in March 2015. His presentation demonstrated how a strategic flood risk assessment could be undertaken on a parish level to consider the current risk of development sites proposed as part of a neighbourhood plan. The analysis using GIS and existing flood risk information generated a flood risk score for each of the sites to better inform residents.

Chalgrove Strategic Flood Risk Assessment

Hydro-GIS Ltd had been asked by the Chalgrove Neighbourhood Development Plan to produce a Strategic Flood Risk Assessment for 11 potential development sites in the South Oxfordshire village. The assessment included the use of published information, site observations and computer modelling techniques using ArcGIS. The resulting document is now available for the general public to view on the website www.chalgrovendp.co.uk and will be used in the consultation of the issues surrounding the development plans.

Possible Development Sites Chalgrove

Possible Development Sites in Chalgrove

2014 Dissertations

Dr Harvey Rodda has been supervising MSc  dissertations and Natural Hazard for Insurers certificate projects at UCL. The topics included an assessment of the impact of dam failure at the Ladybower Reservoir in Derbyshire and the development of a tool for global estimation of river floodplains.

Public Inquiry

Dr Harvey Rodda was engaged as an expert witness as part of a team from Water Resource Associates to provide evidence against a proposed housing development at Tanners Meadow in Surrey. The proposed development including a Flood Risk Assessment submitted by a civil engineering consultancy, completely overlooked the hydrology of the site and the historical risk of flooding. The Planning Inspectors’ decision was to reject the proposed development largely as a result of the flood risk at the site and information presented by Dr Rodda was of key importance in influencing the outcome.

Groundwater flooding

Following the wettest December-February on record, serious groundwater flooding affected many parts of southern Britain particularly in areas underlain by Chalk. Hydro-GIS Ltd has been providing advice to property owners on how best to alleviate against groundwater flooding. In addition Hydro-GIS Ltd has been developing a more strategic groundwater flood risk mapping tool for use in the insurance sector.