The towpath between Ponders End and the Lea Valley Viaduct to the south is remaining closed this weekend 16 and 17 May.
The continued closure is due to essential work on overhead electricity cables.
But if work ceases early in the afternoon the path will be opened.
Those tempted to climb the barriers ought to remember that they will only come up against four further fences.
Although this work is due to continue until 10 July it it is hoped that continuous work now will result in an earlier completion date.
Pages 99 to 101.