Consulting Engineers and Scientists

Flood Risk Assessment

Monmouth Visitor Centre FCA

Keywords: Flood Risk Assessment, FEH, ISIS & TUFLOW Modelling

 

monmouth

ISIS TUFLOW model results for Monmouth

Client, Architect & Other Organisations

Alec French & Partners

Monmouthshire County Council

Description

Alec French architects were appointed by Monmouthshire County Council to develop the architecture of the Visitor Centre with Edenvale Young (then JYA Ltd) being approached to undertake a formal flood consequence assessment for the visistor centre.

 

The River Wye flows to the east of the historic centre of Monmouth and the River Monnow enters the town from the north curving round the south of the centre of Monmouth joining the River Wye on the opposite side of the A40. As stated above, Monmouth is protected by formal flood defences on both banks of the River Monnow upstream and downstream of the site. The embankment of the A40 provides flood protection to flooding directly from the Wye.

Scope of Work

 

In order to gain abetter understanding of flood risk to the Visitor Centre a combined ISIS-TUFLOW model of the Wye and Monnow was developed from approximately 4km upstream the confluence between the Rivers Wye and Monnow in the River Monnow and 2km in the River Wye, down to almost 3km downstream the confluence, defining a 9km long 1D model linked to a 2D 4m grid domain of 5.1 km2. Buildings on Monnow Street and in central Monmouth were constructed as “stubby buildings” with a high roughness to improve flood routing and storage through Monmouth.