Delivering WFD Objectives | 9

FISH PASS DESIGN

PROJECT 2 |

COAL AUTHORITY WEIR DESIGN AND

CONSTRUCTION

LOCATION: Nentberry, River Nent

CLIENT: J N Bentley

In attempting to minimise the environmental legacy of

mining operations in the catchment, the Coal Authority

appointed JN Bentley to design and build a series of check

weirs on the River Nent. The aim was to promote the inchannel settlement

of potentially contaminated sediments

with the objective of facilitating their dredging and removal

from the river system in the future.

WHAT WE DID

• Hydraulic modelling

• Detailed hydraulic design of the solution.

BENEFITS TO THE CLIENT

• Secured Environment Agency approval for the

technical fish pass solution within four weeks

of appointment

• A technically robust solution in keeping with the

upper catchment, rural setting of the site.

HOW WE CAN SUPPORT YOU

We can provide experienced technical specialists who fully understand all the

relevant design and approval processes, to ensure an efficient transition from

concept to site.

• A broad range of specialists, including Ecologists, Fluvial

Geomorphologists, Hydrologists, Landscape Architects and heritage experts,

ensure every site constraint is well understood and considered in the

design process.

• Services from concept and optioneering stage to construction

supervision can be provided.

• Technical experts lead informed engagement with regulatory

staff - our Lead in Hydroecology and Technical Director, who reviews our

hydraulic design outputs, comes with 10 years' experience of working within

the Fisheries function of the Environment Agency, and 10 years' experience

in environmental consultancy.