Essex Rivers Hub

Chad Brook Pressures

The table below shows the current pressures that this waterbody faces and the solutions that could be put in place to solve these problems. You can learn more about some of these pressures and solutions on the Environment Agency Catchment Data Explorer or you can contact us to find out more.

PRESSURES

SOLUTIONS

Channel maintenance activities often reduce river bed and margin habitats.

Revise maintenance activities and work to reduce their impact as much as possible.

This waterbody has developed problems with phosphate, ammonia and dissolved oxygen levels which both contribute to its overall rating as moderate. Unfortunately there is no data to suggest where these problems are originating from. Reduced oxygen levels are often common in summer months because of reduced river flows, higher water temperatures, increased oxygen demand due to increased biological activity and higher effluent proportions in watercourses.

Carry out further investigation in order to determine the source of pollutants and take the action required to solve the problem.

This waterbody has developed problems with phosphate, ammonia and dissolved oxygen levels which both contribute to its overall rating as moderate. Unfortunately there is no data to suggest where these problems are originating from. Reduced oxygen levels are often common in summer months because of reduced river flows, higher water temperatures, increased oxygen demand due to increased biological activity and higher effluent proportions in watercourses.

Carry out further investigation in order to determine the source of pollutants and take the action required to solve the problem.

The invasive signal crayfish are present in this waterbody. The signal crayfish are likely to be causing problems for invertebrates which have fluctuated between moderate and good status. Before 2011, this site held a healthy population of white-clawed crayfish which were unfortunately lost to crayfish plague.

There is currently no known method of dealing with signal crayfish, the only next step would be to monitor and manage the population.

  

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