Reddish surface colour on canal water, Malpas
Introduction
The photograph on this page of Reddish surface colour on canal water, Malpas by Jaggery as part of the Geograph project.
The Geograph project started in 2005 with the aim of publishing, organising and preserving representative images for every square kilometre of Great Britain, Ireland and the Isle of Man.
There are currently over 7.5m images from over 14,400 individuals and you can help contribute to the project by visiting https://www.geograph.org.uk

Image: © Jaggery Taken: 21 Mar 2012
Is the reddish colour of the algae viewed from this bridge http://www.geograph.org.uk/photo/2700442 in late March 2012 a seasonal variation? A summer view http://www.geograph.org.uk/photo/2001931 of a nearby section of the disused Monmouthshire & Brecon canal shows the usual green.