Healthy Estuaries project 2020

Minor funds contribution 2019-2020

Jo Brooksbank, Natural England: £4000

The Heathy Estuaries 2020 Toolbox (HET) is an approach that focuses on the longer-term sustainability of estuary systems to address coastal squeeze in particular, and inform management decisions (please see attached pdf for more information). HET will enable more effective and consistent advice to the Environment Agency on intertidal habitat creation needed by 2020 to address coastal squeeze. The aim is to understand the requirements that will move the intertidal habitat and estuary features towards favourable condition within the Special Areas of Conservation (SACs) and Special Protection Areas (SPAs) and their underpinning SSSIs in order to meet national and international obligations for biodiversity.

The science behind the tool is referred to as Regime Theory, which is the empirical relationship between tidal prism (amount of water entering an estuary) and cross section area. The HET will be tested on Chichester Harbour.

Jo Brooksbank reports, “The desk study and collation of historic mapping data and aerial photography is progressing well. We are beginning to review the data collected so far and are seeking advice from our national specialists on survey techniques. We are planning on carrying out saltmarsh surveys in Chichester Harbour during the week commencing 9th September 2019.”

Healthy Estuaries 2020 Toolbox Explained (PDF)

Courtesy of Chichester Harbour Conservancy