In the upper sections of the catchment the river turns into a series of ditches. Some think the river begins in Mileham where numerous springs make an appearance, however, water still flows from these upper reaches especially after heavy rain and during the winter. Many of the ditches flow into this top section of the River Nar washing sediments and nutrients into the watercourse adding to the diffuse water pollution problems.
This sediment trapping project in the upper Nar is important to help clean the water before it enters the main river channel in Mileham. Although this section isn’t designated as part of the SSSI it still needs protecting from diffuse water pollution by tackling issues head on.
One way this can be done is by installing silt traps which can be maintained. Arable land is farmed close to these ditches and quite often roads are on the other side, this means there is very little room for creating large silt traps like we have done previously in other parts of the catchment. Instead we make use of the space we have and installed silt trap boards that fit snuggly into the bottom of the ditch.
These boards are planned so they do not obstruct culverts, or field drains and can be easily maintained when needed.
If you have any questions about this project or if you are in the River Nar catchment and would like to take part, please contact Helen Mandley, firstname.lastname@example.org.