Rivers Blackwater and Pant

This stretch has meanders upstream but not many other natural features – generally uniform in structure.

The surrounding land mainly consists of a golf course with recent tree planting and some mature trees present also. Other land uses consist of rough grassland, scrub and willow plantation.

The area (land use)

The dominant land use for this stretch of river is recreational grassland and suburban.

No livestock were recorded.

Channel characteristics

The river channel consists of mainly silt, and riffles are present in the upstream section only.

At the time of recording the flow of water was slow and the channel was 2-5m / 5-10m wide and 1-2m in depth.

For most of this stretch the channel profile is shallow upstream and becoming more flat .

Bankside trees were abundant, marginal plants and in-channel plants are rare. Woody debris was noted to be rare.

Engineering

The channel has not been straightened and man-made enhancements are present along this stretch of river.

Field drains were recorded as absent and barriers / culverts are present.

Condition

Areas of trampling / poaching were absent and areas of erosion were absent at the time of the survey.

Wildlife

The following was seen or heard during the survey: Moorhen, Kingfisher, Mallard, Kestrel.

Additional Information

There is little vegetation left unmanaged between surrounding land and the river channel. This may lead to overland runoff impacting on the water quality.

The water at the time of the survey was brown but this may have resulted from recent rainfall, however build-up of sediment was also found which could suggest there is high silt content in this section.

 

RBD/catchment/river/tributary

Rivers Blackwater and Pant

Date completed

Nov-12

Upstream Grid ref (red marker)

TL8303813083

Downstream Grid ref (green marker)

TL8246511878

Website key stakeholders:

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Design by LTD Design Consultants and build by Garganey Consulting based on an original concept by Herts and Middlesex Wildlife Trust