Tidal estuary
The Home Quality Mark, defines a tidal estuary as:
'…a semi-enclosed coastal body of water which has a free connection with the open sea and within which seawater is measurably diluted with fresh water derived from land drainage.'
An estuary should be unconstrained tidal waters, i.e. there should be no barriers or constricted shorelines that would restrict the free flow of water into the open sea in any conditions. The impact on the total volume of run-off from the site (and other sites which may in future discharge into the estuary) should be insignificant in terms of the overall water levels in the estuary. Tidal rivers (i.e. where no or limited measurable seawater content is present during normal tidal movements) cannot be included as part of the estuary for the purposes of HQM.
Ref Home Quality Mark One, Technical Manual SD239, England, Scotland & Wales, published by BRE in 2018.
[edit] Related articles on Designing Buildings Wiki
Featured articles
Check out some of the best features and news from Designing Buildings as well as key stories from around the web.
Building Regulations and Building Safety Act
CIOB publishes free advice for non-domestic clients.
Building Safety Newsletter from MHCLG.
An extraordinary record of steel engineering worldwide.
Households living near new pylons to save on bills.
ECA warns growth must not outpace grid capacity or skills.
The role of the client and decision making
CIOB response to built environment professions call for evidence.
Construction's sustainability reporting revolution
Tracking upfront embodied carbon with digital tools.
ECA welcomes procurement reforms
Public spending must back British jobs and skills.
Campaigning for Edinburgh: the Cockburn Association 1875-2049
The role of the civic voice in protecting character. Book review.
CIOB photography competition is open for entries.
ECA Edmundson apprentice of the year award
Finalists announced.
Major new study exposes serious knowledge gaps.