Report - Lockdown Mode, Manchester - July 15

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28DL Regular User
Regular User
Oct 24, 2008
On the banks of the Manchester Ship Canal sits a large concrete outfall behind which a long storm drain runs deep into Salford. TunnelMon was in chest waders and confidently strode out first, I was clad to the thigh only and had to carefully hug the bank to avoid breaching. After skirting the drop off into the Ship Canal's depths and trudging through silt in the pipe we came to a chamber with steps rising from the invert, helpfully pointed out by a filthy sign.


The pipe started off as some kind of slippery composite around 8ft tall and the going was slow to keep upright.


It changed to concrete box section (the only shape change), possibly as it passed over a large Victorian sewer overflow.


Continuing for many kilometres we went through various shafts containing the usual storm drain drop pipes. A sprig of fresh greenery at the bottom of one suggested a lid had been lifted earlier that day, although no further evidence could be seen of people having been down there for years, certainly the soda straws growing from the ceiling looked undisturbed. I expect it has been explored in the past but due to it's nondescript nature not written about.




After walking for around an hour in total we came to a ramp after which the pipe shrank, we followed for a little longer before calling it a day.


I suspect the storm drain may provide drainage to the M602, and continue in a North East direction in a shrunken state for some way.


28DL Full Member
28DL Full Member
Aug 4, 2014
Agree totally, your pics are awesome mate, anyone who's ever tried to photograph in those conditions will how hard it is to get right. Top stuff.


28DL Full Member
28DL Full Member
May 22, 2015
Amazing, this construction looks pretty recent. Loads of stuff keeps on getting unearthed in Manc, makes me wonder what else there is to find. That water in the 1st pic looks pretty sewagey, what does the sign say, some warning about deep water or the steps being submerged? Is it a sump?


28DL Full Member
28DL Full Member
May 22, 2015
Is the outfall just one rcp or a square concrete box, or some smaller pipes to lessen the flow into the ship canal?!


28DL Full Member
28DL Full Member
Jun 20, 2015
some good pics there mate. if you carry on further down after the 1350 pipe size under the M602 it opens up into a brick circle about 2 meters for some distance more but becomes a bit small to carry on. i got photos i will get them on here. i climbed down the manhole where you seen the twigs and stuff some time ago. there are a few more big pipes in that area.