MMO1135 Potential Beneficial use Mud Potential Material Sources Maintenance Dredge Disposal Sites

Open marine disposal sites in England and Wales, which could yield muddy materials suitable for mudflat or saltmarsh restoration by applying the beneficial use / alternative reuse of dredged materials technique. Polygon dataderived in 2018based on a review of relevant Cefas databse (which contained records up to 2012), whereby sites which regularly receive maintenance dredge materials were identified. The datalayer also contains information on likely source of the sediment, and predominant sediment type, where this could be determined (through a literature reveiw). Key limitations of the datalayer are that it only provides a high level indication of where, and how much, sediments may be available. Furthermore, the review is based on a database which contained records up to 2012, so trends may have changed since then; and for some sites, primary depositors could not be identified. However, despite these limitations, the datalayer presents data which is not available elsewhere, and indicates trends which are likely to continue into the future, as maintenance dredge requirements do not tend to fluctuate substantially.