7. ENNIS - Crayfish Control Volunteers, Tuesdays

Main Activity

Work as part of a program to control numbers of the invasive signal crayfish on the River Barle upstream of Withypool.  This work is carried out under strict licence from the Environment Agency. 

You can volunteer on regular Tuesdays to check Artificial Refuge Traps.  

All of the work is dependent on river levels.  They must be below 0.20m as recorded by the Environment Agency river gauge at Simonsbath.  You can view this here

You'll spend the morning walking a reach of the river checking crayfish traps with other volunteers.  The Crayfish you find will need tagging, marking, castrating, and in some cases humanely dispatching. (full training will be given).

Time Commitment 

at least 5 mornings over the survey period (April to October) Surveying takes place every Tuesday (river levels allowing) and during week long survey periods. Tbc.

All the dates are river levels allowing and may need some moving about to allow for this.

On the regular Tuesdays we need at least 3 people meeting at 0930

If you are unable to make the minimum commitment of 5 days you can add your name to the backup list, If we then have spaces we'll let you know.

Skills needed

You will need to be able to

  • Walk on rough ground, climb up and down river banks
  • Be happy to handle live crayfish, and be happy to be close when trained people are humanly dispatching them (it is an offence to release them once caught).

We ask volunteers to sign up at least two weeks in advance so we can ensure we have adequate cover.  

For more info contact:- 

Patrick Watts-Mabbott

Volunteer and Outreach Officer

Exmoor National Park Authority

Exmoor House, Dulverton, Somerset TA22 9HL


Tel:  01398 323665 (switchboard)

Mobile:  07973727469

Email: pwatts-mabbott@exmoor-nationalpark.gov.uk



Schedule Summary

This activity generally occurs on

  • Tuesday Morning