Showing posts with label floods. Show all posts
Showing posts with label floods. Show all posts

Friday, October 24, 2008

... and another, much bigger flood event on Oct 23...

Well, it was to be expected, wasn't it, what with all the rain coming this way from across the Atlantic and us being so close to the sea with mountains behind, so this "orographic" rainfall is chundering down on us. Fascinating to a newbie like myself as the rain here is so very different from the rain in Bern, Switzerland. Not cold, not harsh, except when it's driven into your face by a strong gust...
Anyway, I woke very early this morning and took this photo (just before 5AM):
My new camera has come in handy as it can compensate for lack of lighting, at least up to a point. I am still learning to use it, so some of the colours are not right.
In the daylight, the view was even starker -- this is from my kitchen window, taken at about 11AM:By about 12:40PM, the water had receded a bit, not because the rain had let up but because the fence that runs at a right angle from the stream has given way in one strategic point, which allows some of the overflow to take the straight course across the lane, through the metal fence and into the car park beyond.
Elsewhere, too, there were floods -- the road from Glasgow to Oban was flooded in many places, making for dangerous travel, and locally some car parks had geysers in them:
And today, we have sun, hail, wind, calm, rain -- everything in quick succession, making for some stunning views:

Friday, October 10, 2008

The burn has flooded

Hiya again

It's been raining really hard for a day and a night. I woke up just after six this morning to find the Black Lynn, the burn at the bottom of our garden, having risen above its banks and inching up towards our garden fence.
As I type these lines (ca. 08:30am), about one third of the recently-cleared wilderness is flooded but the waters are receding. There's a distinct whiff of human excrement in the air, so the rumour that raw sewage goes straight into the burn is probably true.
My neighbours have told me floods like this happen on a regular basis.
I can only say that someone made a big mistake when they "renovated" the burn crossing by simply putting a concrete slab down where, from the looks of the stone wall, there once was a small arched bridge. This means that clearance is at least twenty to twenty-five centimetres (about ten inches) less than before. What's more, two culverts run below the slab, further reducing clearance, the lower one skimming the surface of the water even on a good day: I took the above and the next two photos two days before the first flood I've witnessed here:
The burn on a good day, with a pair of mallards enjoying the newly-cleared watercourse.
Until recently, the riverbed was chock full of litter: wooden planks, broken scooters, rope, plastic bottles, a traffic cone, an old tyre, some rusting box-like thing that may once have been an oven -- see for yourself:Above, the low-lying culvert blocking the flow of debris and rubbish -- maybe a good thing but it's a flood event just waiting to happen; below, a look upstream from the same vantage point (photos taken Aug 4, 2008):

Some photos now to document the beginnings of the flood event before dawn, the cusp and the receding of the waters.
I started taking photos at 06:17, as the water was beginning to creep across the lane that crosses the burn: By 06:50, the water was flowing right across the lane (above) , after which it began to fill the lane itself: The water creeping up the lane (07:03; above), filling the newly-cleared "community garden", and rushing down the car park, … … covering much of it by 07:25:The maximum was reached just before 07:30, which is when the water reached the top of the lane and the "feet" of my garden shed (water damage was not serious, but I wonder what the next flood will bring).
07:38 (above) and 07:40 (below)
The water began to recede about an hour after the maximum.
At 08:22 the burn continues to rush along its concrete trough. Above the bridge, it still spreads out into the newly-cleared "community garden" . I observed quite a few people walking down the lane from across the stream and having to turn back to take the long way around. By 09:27, the lane has become passable again……and by 2:33pm, the water has actually receded to below the level at which I started photographing the event:
What I didn't photograph (I did have some work to do, actually) was the mallards that moved in about two hours after maximum level. They had a ball swimming about the new "lake" and scoffing up the nutritious worms etc that were washed up.

Monday, April 23, 2007

Engelberg, Switzerland -- ForumAlpinum 07, Part Two

Welcome to Part Two of my series of posts about ForumAlpinum07.

On Saturday, April 21st, some of us went on an excursion along the valley/canyon of the Engelberger Aa.

In August 2005, after days and days of heavy rain, the rain, water from snowmelt and thusly softened hillsides combined to cause massive flooding and landslides. When the road and railbridge (see below) collapsed, Engelberg was in "lock-down" for ten days while the locals scrambled to build an emergency access road.
The viaduct is still only half-rebuilt. Our first stop on the bus tour down the valley was at the construction site. Impressive, don't you think?The stream (the Engelberger Aa, Aa = water) looking quite fierce on this very sunny day and after a dry period of about two weeks, with snow melt low due to the scarcity of snow higher up:
Huge boulders weighing several tons each have been sunk into the banks to the right and left. The engineers hope this will keep the riverbed stable enough during future flood events so that the structures above may be safe.
Two years ago, the Aa flooded vast tracts of farmland, causing millions of Swiss francs of damage. Further downstream, near Grafenort, the driftwood has still not been cleared -- people have been busy rebuilding the most necessary parts, like this barn that narrowly escaped destruction. Its further left-hand-side corner was torn away by a gentle tributary to the Aa that swelled into a torrent and found a new bed very close by. The goats on the meadow nearby are completely oblivious of the mayhem that was.If the goats are oblivious, the people here are resilient. Someone planted a tree. May it flourish!
Next post: the Manor House (part of Engelberg monastery) at Grafenort.