Tag Archives: Grove Park Ditch

Beyond a Boundary – Border Ditch, a Quaggy Tributary

Border Ditch is one of the smaller tributaries of the Quaggy – it rises in playing fields on the edge of the Downham estate, very close to a natural boundary – the watershed that marks the divide between the Quaggy and Ravensbourne catchments. Its name comes from a different boundary though – for some of its recent life it was a small part of the border between Lee, then Lewisham, and Bromley.  In addition, it would mark the limit of London until 1965 when Bromley was prised out of Kent and brought into the metropolis (although the distinctions had become a little blurred from the 1840s as the Bromley was included in the area covered by the Metropolitan Police).

While the contour lines on the map for the early part of the Ditch are clear, they would suggest a route from around the middle of the playing field then following a line slightly to the south of Welbeck Avenue to Burnt Ash Lane.  However, the boundary which predated development, and the playing fields, is slightly to the north of this, suggesting that the course may have been adjusted when the land was farmed.  There was no access to the school playing fields, so any further investigation proved impossible.  The current course seems to follow a now overgrown access road to garages and then a very clear dip in Burnt Ash Lane.

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There used to be a small bridge at this point which was captured on film around the time of the First World War, before the advance of suburbia and the Downham estate in the 1920s (source Lewisham Archives on a Creative Commons).

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The stream is no longer visible (or even audible) at this point but there is a clear valley as it squeezes between the gardens of Ridgeway Close on the Bromley side and Wydeville Manor Road on the Lewisham side.  There are tracks down to garages at the rear on the Bromley side, but as ‘danger reared its ugly head’ – with a dog starting to bark as I attempted to investigate – the urban explorer ‘turned and fled’ in the manner of Brave Sir Robin.

Fortunately, there was a dog-free access point on the Lewisham side and squeezing between some broken railings a view of the newly emergent Border Ditch was possible.  There is a noticeable valley although during a relatively dry early autumn relatively little water. From this point, it is likely that the Ditch continued downhill until it met the Quaggy; it isn’t possible to be certain though as the imposing railway embankment obliterated contour lines past.

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Railway engineers appear to have taken the Ditch on a slightly more circuitous journey in creating a new confluence with the Quaggy. The course they chose for it would have seen the Ditch empty into the Quaggy close to the bridge in the southern part of Chinbrook Meadows – source Creative Commons.

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While the line to Bromley North was later added, the course doesn’t seem to have altered – source Creative Commons, National Library of Scotland.

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The stream seems to have been slightly moved north east at a later date to hug the edge of the embankment and emptying into the Quaggy just after the latter enters the tunnel under the main line.

The re-emergence into the open  is a rather desultory one, exiting from its concrete casing into what was more reminiscent of a drain than a stream.  There was little sign of movement in the ominous looking muddy water.  It wasn’t even easy to see, hidden behind stout metal Network Rail fencing preventing any ne’er do wells having access to the embankment from the south westerly part of Chinbrook Meadows.

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The emergent Ditch trickles slightly downhill for almost a hundred metres towards its final destination – its confluence with the Quaggy.  The coming together of the flows is rather lacking in distinction too, there is a twist to force the Ditch down and almost back upon itself to meet the Quaggy with the all the force of a tap with low water pressure.  My failed attempts to photograph the junction were even less impressive than the reality.

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The good news is that there are plans afoot to try to make the last few metres of the ‘Ditch’ slightly more alluring, while the aesthetics will be improved considerably, the real reason is to install a sustainable drainage system (SuDS) which would enable water to run through a series of pools planted with native marshland plants that will naturally filter the water reducing the potential pollution impact of the ‘Ditch.’  I am no expert on gauging water quality by sight, but it didn’t look good.

While Border Ditch isn’t currently worth much of a trek, Chinbrook Meadows is a different matter, it is a lovely park – one of my Lewisham favourites.  It was the site of a small dairy farm, Chinbrook Farm – the park first opening in 1929 and being considerably extended eight years later.  The Quaggy was channelised early in the ‘Meadow’s’ existence and, from memory, large fences and hedges partially hid the river (they still do on its exit).  The river was freed into a more natural gently meandering course with more natural planting and access after works that were completed in 2002.

© Derek Harper, Creative Commons

If you recognise some of the latter photos and text, that would not be surprising, I have previously attributed them to a different stream – one I referred to as Grove Park Ditch (West).  Border Ditch is referred to as that, without the locational suffix, by the Environment Agency. However, having spent an age following flows and contours on old OS Maps I am now pretty certain that the outflow is that of Border Ditch, I am in pretty good company here – my view is shared by the sadly departed fellow fluvial flâneur, Ken White.

The area is no stranger to artificial boundaries – around quarter of a mile away from the source of Border Ditch there was the infamous wall of Alexandra Crescent.  It was built by the developer of a private road in 1926 to prevent those on the Downham Estate being able to walk through the new middle class housing towards Bromley.  It never had planning permission, but the over two metre boundary, topped with broken glass was to last until 1950. (More information & picture source)

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The Ordnance Survey note boundary markers both within the Chinbrook Meadows and at the bottom of Oakbrook Close.  They seem to no longer exist – I certainly couldn’t find them and they haven’t been spotted by a follower of the blog who is tracker of boundary markers – the earliest maps note they were on trees though so even if the trees are still there the marks probably won’t be – however, nowhere did I see any arboreal girth approaching 200 year years (a substantial tree in 1860 plus the intervening time period)…

Back to the Border Ditch, it is no longer the border for much its last few metres, the Local Government Boundary Commission agreed to requests from both Bromley and Lewisham to shift the boundary to the far side  of the railway in 1991.  The dashed line is the ‘new’ boundary; the non-dashed one the pre-1991 boundary.  So it seems that the watershed is probably the only definitely fixed boundary – boroughs and counties are man-made constructs and as we have seen even streams change course, in this case diverted at least.

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The Stream with No Name – A Tributary of the Quaggy

Sometimes making sense of watercourses after the urban area has encroached upon them is not that straightforward, developers and railway engineers can confuse apparent flows in a way that make deciphering  a stream’s courses a little tricky. This is one such example.

This is a stream that fooled me – I had originally thought that this stream had gained length when suburbanisation arrived and had been taken on a geographically plausible, although unlikely, detour around the edge of two railway embankments to join the Quaggy in Chinbrook Meadows.  There was even the sound of subterranean running water just to confuse matters – it was probably just a drain …..

The source of my of confusion had been the Environment Agency referring to the outflow in Chinbrook Meadows as Grove Park Ditch, whereas the real Grove Park Ditch is, entirely separate, and, a few hundred metres to the east.  It was only when I started tracing Border Ditch that I realised their, and my, error.

Anyway, back to this small, unnamed stream …..

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Its source seems to have been a pond, or the ground just above it, at the junction of what is now Leamington Avenue and Portland Road – the little bit of blue on the Ordnance Survey map published in 1898.  The stream’s route is clear from the Environment Agency Flood Risk maps, when the surface water option is selected – it is the thin blue line to the bottom right of the map.

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The course is probably no more than 200 metres long, the upstream pointing contour lines of the modern 1:25,000 OS map show it heading from its original source (the left hand picture above), towards the Quaggy’s original course – behind Leamington Avenue, roughly following a now largely overgrown track to garages behind the houses (middle picture), then crossing Leamington Close, still under a track to garages (right hand photo above), to join the Quaggy behind where Oak Tree Gardens are now situated.

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The Quaggy too was diverted underground in this area when the houses were built, there is a clear dip in Leamington Avenue (top photo immediately above) and its new submerged course is topped by another access track to garages.  Oddly, above where the confluence occurs there was a large puddle (above, lower photo), I did plan to take a slightly closer look but dogs barking on the private land as I approached rather deterred me – a less than intrepid explorer.

This stream ought to have a name now that it has been re-discovered  –  I would suggest the appellation Leamington Ditch for it –It needs to be a Ditch – it is the usual nomenclature for small streams around here.  However, Leamington merely comes from the street it runs parallel to for its short course – so would be happy for others to offer alternatives to whoever the appropriate arbiter for Ditch names.

 

 

 

An finally … thank you to Lawrence Beale Collins of Thames21 for helping me with unpicking the two very different Grove Park Ditches.

Grove Park Ditch – A Quaggy Tributary

As Running Past has noted before, little imagination went into the naming of most of the Quaggy’s tributaries, the notable exception being Mottingham’s Fairy Hall Flow.  Grove Park Ditch is one of those appellations that is lacking in allure, purely functional, mundanely descriptive – although, as we will find, it is in places much more than that.

Grove Park Ditch is a near neighbour of the seemingly no longer flowing Fairy Hall Flow, its source in Lower Marvels Wood is a couple of hundred metres away from where the Flow once babbled through farmland on what is now Beaconsfield Road.

The ‘source’ is in the lovely Lower Marvels Wood, presumably a remnant of the past woods that covered the area now part of the Green Chain Walk.

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The amount of water at the source is impressive, and has eroded a relatively deep channel which was quite a slippery scramble to get down see.  It presumably isn’t the real source; there is a concrete construction around the ‘source’ with a just visible pipe curving off to the east – presumably water is culverted from somewhere else.  There are one or two small ponds marked on Victorian OS maps a little higher up the gently sloping hillside in Marvels Wood – they aren’t marked on modern maps and my limited exploration on a very soggy Sunday morning failed to find any sign of them.

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After the initial erosion from the force of the water from the source, the ‘valley’ soon becomes imperceptible with the Ditch clinging to the southern edge of Lower Marvels Wood, almost hidden from the playing fields it borders.  For a small stream flowing through woodland and a park edge, it seems to ‘attract’ a vast quantity of urban debris, if the large pile by the plastics and glass by the traps close to Lambscroft Avenue is anything to go by – this is just before the Ditch is lost to view,

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The ‘Ditch,’ once encased in concrete, heads down the gentle slope, under houses towards the playing fields of Eltham College.  The exact route is unclear; it isn’t marked on old OS maps as a stream.  However, as historical boundaries often followed natural features such as streams, it is quite likely that the original course marked the local government boundary from the highlighted boundary stone (on the map below) until it reached the Quaggy.  During my reconnoitre I didn’t hear the sounds of rushing water emanating from below manhole covers, however, this may have related more to the cacophony of the above ground torrential rain, with one or two thunderous rumbles, drowning out any subterranean sounds.

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Any access to the playing fields of Eltham College (Running Past  has ‘visited’ the former Fairy Hall before) and those of the City of London School is limited, the gates are locked and the borders are patrolled. So it wasn’t possible to see whether there was any above ground evidence of the Ditch, maps suggest there might be, although the satellite view of Google suggests that it is submerged, hidden just beyond the boundaries of cricket pitches.  The maps appear to show another small stream or drainage ditch too.

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The outflow of Grove Park Ditch is a pipe from the wall of the horribly channelised Quaggy – the walls and river bed are concrete and presumably devoid of much life as a result.  As the Quaggy Action Group suggested a decade ago, it is a ‘suitable case of treatment’ of the kind that has enhanced both Chinbrook Meadows and Sutcliffe Park, both visually and in their ability to hold storm flows.  The outflow was easier to see than to photograph from the Green Chain Walk path, although this was largely because of the siling rain when I ‘explored’ for this post.

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While not part of the ‘Ditch’, on the western side of the Quaggy there is modern cartographic evidence of a couple of streams joining the Quaggy from the area around what is now Hadlow College, the Victorian OS map showing just the ponds, however, this too is private land and not accessible to the fluvial flâneur.