Essex Rivers Hub

There is a water treatment plant present on this stretch of river and there appears to be a possible channel diversion around this so it becomes very straight. However along other parts of this stretch it is more natural with meanders present. The channel can become choked with large amounts of vegetation with some large reed beds in places. There are good buffer strips of vegetation separating the arable land from channel.

The area (land use)

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

No livestock were recorded.

Channel characteristics

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

At the time of recording the flow of water was Array and the channel was Array wide and Array in depth.

For most of this stretch the channel profile is steep.

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


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

Field drains were recorded as Array and barriers / culverts are Array.


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


During the survey banded demoiselles, mallard, long eared owl, jay, tortoise shell butterfly and large white butterfly were recorded.


River Mardyke

Date completed


Upstream Grid ref


Downstream Grid ref


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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