About ten feet wide the dyke goes, by a tortuous route and series of right angles, to finally join the Middle Level drain several miles away. Looking at the grass covered scummy water it's hard to believe that there are Roach, Rudd, Perch, Eels and small Bream plus all kinds of Sticklebacks and Frogs, Toads and Newts in here too.
The debris floating on the surface keeps the ever hungry Cormorants that come flying over at bay too, so that's a good thing.
The Cormorants don't like flying lead either.