EA Southern Region (via Halcrow)
Design and supply of ultrasonic transit-time flow meter at a complex site on the Kent Ditch
HL was commissioned by the EA Southern Region, as sub-consultants to Halcrow Consulting Engineers, to undertake the feasibility and hydrometric design of 6 sites on streams feeding the Romney Marsh. On one of the streams, the Kent Ditch, it was necessary to design a two section/stage gauging station for which a Sarasota 2000 ultrasonic transit-time meter was installed.
Wessex Water,Design, supply and installation of low-flow environmental impacts monitoring system on the River Yeo in Somerset, 2005-2008
Wessex Water contracted HL to install a new flow-gauge to provide flow data on the environmental impact of abstraction upstream and downstream of a riverside borehole for public-supply. Due to the channel and hydraulic conditions at the site on the River Yeo in Somerset, HL selected a horizontal ADCP Channelmaster device from Teledyne RDi for providing accurate velocity profiles at one elevation at a convenient section under a footbridge, so that a velocity index rating could be established.