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Project LeaderGreen CorridorProject PartnersEnvironment AgencyFriends of the River Crane Environment (FORCE)Green CorridorLB HounslowLB RichmondLB HillingdonLB EalingLB HarrowLondon Wildlife Trust Funding SourcesThames WaterProject Budget£2,200 + in-kind hoursProject Timescale2015

Urban River Surveys

These surveys are conducted to assist the CVP in their efforts to increase our knowledge of the flow characteristics and morphology along the water courses within the Crane catchment, so as to refine and enhance the river rehabilitation projects and green space enhancements within the catchment.

To gain a baseline picture of the morphological constraints along the river, a scientific assessment method called the Urban River Survey (URS) will be used. The URS surveyor records information on the physical structure of 300-500m stretches and their margins (with spot checks at 50m intervals within the designated stretch). Indices are then calculated to assess the relative physical quality of individual surveyed stretches.

There is approximately 70km of river length within the catchment that could potentially be surveyed, however some areas will be inaccessible due to access restrictions or health & safety concerns.

The river reaches will be refined before surveys will take place, to take account of where Water Framework Directive measures have been suggested. The reaches where projects have been suggested will be surveyed, as well as the upstream and/or downstream reach (depending on accessibility).

The surveys will take place during April to October. The results of these surveys will be included in the CVP GIS database, and will be shared with the Environment Agency, Thames Water, the Borough Councils as well as other partners within the CVP and London.

The data will be combined with other data currently gathered through the two Citizen Science projects within the catchment, i.e. riverfly monitoring and phosphorus monitoring, as well as other data included within the GIS, e.g. historical data, topography, infrastructure, conservation areas, engineering structures, etc.

The surveys will be undertaken by Dr Ilse Steyl (fluvial geomorphologist) an accredited River Habitat and Urban River Surveyor, with the participation of citizen scientists already involved in monitoring, involving them further in looking after their local river.