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Harringay, Haringey - So Good they Spelt it Twice!

The New River has risen 2 feet since 5 o'clock and is now almost at the top of the banks. If it rises any more it will flood into adjacent gardens/properties.

I have called the police and Haringey Out of Hours Service. I thought possibly Thames Water could open downstrean sluices to discharge into the Thames but gave up after 40 minutes hanging on.

I can't think of anything else to do but householders along the New River should evaluate the situation and perhaps remove valuables from basements / ground floors.

Tags for Forum Posts: new river, new river water level

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HOSEPIPE BAN ALERT !

Golly! How is it now, John?
Crikey! Might be worth a call to the Environment Agency Floodline on 0845 988 1188?

6 am - the level has dropped back about a foot so danger over for the moment.

The coot nest has been swept away though

Phew! Boat building may still be a good idea though, how about an ark?

I think its always best, if there's any doubt, to give flood alerts like this and to heed them. I was once employed on the floor of a motor car assembly factory: one morning all the workers were warned they might wish to move their cars parked outside. I thought I'd go out and take a look at a convenient moment.

About 10 minutes later, I went out to find water half way up the car's door! I pulled hard against the water to get the door open; the starter motor cranked the engine, but there was no way it was going to start. Eventually I was towed to higher ground by a Toyota Land Cruiser.

The MD entrusted me with his secretary, whose hand I held as we waded out. The factory of several acres became flooded throughout to knee height. Flood waters can rise fast.

The West reservoir is still pretty empty and the New River down that way is just a trickle...

Not local - but in Wandsworth in 1980-ish we had a flash flood that dumped three feet of drain overflow in the basement, where we had a load of stuff in store including about 1000 of my books. Wandsworth had a drainage problem that could not cope with such surges, all they did was provide skips to take away wrecked furniture and carpets.

Drain water is not nice clean sparkly rainy clean stuff, it's come up from the sewer - there are two sewer systems so it's not the same as the more yukky waste, but it's still not pleasant. 

Took months to clear up, and we weren't living in that space. I always remember this when I hear of floods and feel for the victims. In my bit of sunny N15 I am two roads away from the Environment Agency predicted extreme (0.1 per cent, 1 in 1000, chance) flood plain from the River Lea, but I still keep my backup hard drives on a top shelf. Drop your postcode into here to see your risk.  

And instead of 'risk of flooding from rivers or sea' select the drop-down option 'Risk of Flooding from Reservoirs'.

That map is useless. It shows that there is no risk of flooding from the New River up near Hornsey station and just look at this post!

I think that map mainly seems to show the expected course of the flow if the Stroud Green covered reservoir broke.

I found this in the 'North London Strategic Flood Risk Assessment" Because of the existence of sluice gates, they seem to emphasise the issue of raised banks/bed breaking rather than 'overtopping'. For Haringey, it also says 'low likelihood for flooding to occur due to enforced management of risks'  and 'the New River is consider to pose a limited flood risk as it is flow is controlled by pumping stations demand"

"The New River (discussed further in section 5.6.3), whilst not included on the reservoir list may also be considered in the same context as reservoir flooding. Sections of the New River are elevated above ground level and a failure of the embankment at these locations would result in a significant discharge of flow...

The New River water level is regulated by sluice gates, designed to allow flow to meet the requirements of the pumping stations and reservoirs. The Artificial Recharge Scheme consists of a series of boreholes which enable surplus treated water to be stored in the chalk aquifer and then pumped into the New River as required.

The New River contains many sections which are raised above the existing ground level. These include the crossing over the M25 close to junction 25 and several sections within residential areas (see map 9 for its route). Should any of these raised sections fail they could pose a significant flood risk to adjacent properties. The inspection and maintenance of these raised sections of the New River is therefore critical.

Canals are at risk of overtopping and breach in a similar manner to watercourses. Canals can breach at any point making risk assessments a difficult proposition".
Stonebridge Brook is considered a bigger risk. It doesn't mention Hermitage Brook at all.

I'm new to the ladder, so sorry if this sounds dumb: when you say "new river" what do you mean? My house is along the canal that goes through the ladder, and I didn't see the water rise 2ft or be near the banks. Is that because the flood alert area you're referring to is an upstream reservoir that is pumped up into the canal along the ladder?

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