Essex Rivers Hub

Blackwater; Hall Broad

A natural section of river with meanders and changes in width and flow caused by riffles so the river bed is stony and gravelly in places. The banks are natural but some areas are better than others.

The area (land use)

The dominant land use for this stretch of river is arable and pasture.

Cattle and sheep were the main livestock recorded.

Channel characteristics

The river channel consists of mainly silt, and riffles are present.

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

For most of this stretch the channel profile is steep.

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

Engineering

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

Field drains were recorded as present and barriers / culverts are Present in the upstream section only.

Condition

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

Wildlife

The following were seen or heard during the survey: Grey Heron, Wren, Brown Hare, Tree Creeper, Robin, Pheasant, Mole hills, Mute Swan.

Additional Information

There were areas where vegetation had been dredged from the river and left on the bank seen in this section.

This area is also used to grow Cricket Bat Willow.

RBD/catchment/river/tributary

River Blackwater

Date completed

Dec 2013

Upstream Grid ref

TL8410415495

Downstream Grid ref

TL8410715500

Website key stakeholders:

Environment Agency logo      Essex Wildlife Trust logo            Essex Biodiversity Project logo

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