Within the Middle Level, there are 33 independent Internal Drainage Districts initially set up in the 18th Century and each responsible for the local drainage of their area. 

In addition, the Commissioners provide clerkship administrative and financial services to 7 Internal Drainage Districts outside the Middle Level area.

Most of the Boards have pumping stations and within the Middle Level they discharge their run-off into the main Middle Level watercourses.  Outside the Middle Level area, the Boards discharge into main rivers under the jurisdiction of the Environment Agency.

Many of these IDBs are administered from the Middle Level Offices and their administrative and financial work is carried out by Middle Level staff.

In addition, Middle Level staff also undertake engineering and planning liaison consultancy work for a large number of Boards. 

The membership of the IDBs is drawn from the same sectors as that of the Commissioners.

For the list of Internal Drainage Districts click here

For Suspension of Navigation Notices click here

For Environmental Impact Notices click here