River Mardyke

This area is run by the Davy Down Trust. It is managed for wildlife and as a public open space.

This area is a combination of amenity grassland, scrub, woodland and semi to unimproved grassland. The channel has been straightened and dredged in the past.

There is some trampling along the bank but this is from dogs as this is a popular dog walking area.

The area (land use)

The dominant land use for this stretch of river is rough grassland.

No livestock were recorded.

Channel characteristics

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

At the time of recording the flow of water was sluggish and the channel was 2-5m wide and 0.5-1m in depth.

For most of this stretch the channel profile is steep.

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


The channel has been straightened and man-made enhancements are present along this stretch of river.

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


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


Ring-necked Parakeets were seen and Chiffchaff and Blackcap were heard during the survey.

Additional comments

This area is part owned by Essex and Suffolk Water and Thurrock Council.

Some areas of surface film had accumulated around in channel vegetation and small areas of woody debris.


River Mardyke

Date completed


Upstream Grid ref (red marker)


Downstream Grid ref (green marker)


Website key stakeholders:

Environment Agency logo      Essex Wildlife Trust logo           

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