July 19th – Following the canal breach a few weeks ago, that saw the local canals lose nearly a foot in level following a breach into a culvert beneath the waterway at Little Bloxwich, the repair has been effected and levels are back up to a healthy level now.
At Clayhanger, the low end of the overflow is now running well and it’s a fine sight and sound once more.
February 26th – The water level at Chasewater is lower than I’ve seen it for a while. Interestingly, rather than open the valves fully, there’s a good flow into the canal, and the balancing culvert between the Nine-Foot pool and Spillway has been opened, allowing a steady stream of water to flow into the Crane Brook via the drain system under the canal.
I understand why the level is being dropped – with the dam being permeable, if installing drains you want the installation to be as dry as possible – but I’m puzzled by the method. It has, however, been convention since the original dam works to allow the reservoir to overflow every spring, so perhaps this is to irrigate the spillway marsh as it would be normally.
Interesting too to see the white scale around the lowered waterline. It that salt, or something else?
January 4th – After being worryingly low in late summer, the water level at Chasewater has recovered quickly. With the rain and meltwater over the Christmas period, the balancing culverts are now submerged, and I think we’re about 16 inches (400mm) off full. If water isn’t drawn down, I’d expect water to be overflowing into the spillway by mid February if we have moderate rains.
I still can’t get over how quickly Chasewater refills.
December 6th – Nice to see the water level rising at Chasewater again. The Nine-Foot Pool is linked to the main lake by a balancing culvert, below the level of the main dam channel. This is replicated at the same level by a drain culvert that’s usually closed opposite. A month ago, the water was clear of the portal, it’s now over half way up.
The depth gauge on the pier has been removed, so all I have to go on is heigh to submerged features, but I’d say we’ve gained 300-400mm in a month or so and are now about 1000mm of full. A winter’s rain will soon see that full again.
March 1st – Cycling on NCN 535 between Witton Lakes and Brookvale Park, I noticed this culvert portal to the brook that flows through the lakes from Kingstanding to the Tame. This steelwork may look ugly and grim, but it’s a vital piece of environmental equipment: it’s called a Trash Screen and stops large items of debris from entering the culvert and causing a blockage where it would be difficult to extract. The grid traps litter, flotsam and jetsam, and can be removed easily by technicians, even in heavy flood conditions.
In the weather we’ve had, clearing trash screens is a major job for councils and the Environment Agency. Often unpleasant, but very, very necessary.
August 28th – This is an odd thing. This sluice is built into the canal bank, overlooking the Big House in Clayhanger, and was once (and presumably, still is) a drain point for the canal, with the mechanism blocked out of use. I reckoned it must be redundant, as if opened, it would appear to drain onto the garden beneath it. However, in the last few weeks, someone has been and inspected it, removed the plate covering the mechanics, and greased the gears. Perhaps it’s still functional, and doesn’t drain to the open but to some kind of culvert.
Anybody know for sure?
December 16th – I went back to Chasewater in the daylight to investigate how the water levels were behaving, and to seed what was going on with the balancing culverts between the main lake, Nine-Foot pool and the spillway. It seems the sluice that was open from the Nine Foot to the spillway has now been closed, and looking at the output side it seeks very well indeed. Water should now continue to rise until it reaches the top of the breakwater on the left. This means there’s about a metre to a metre and a half to go before the lake is full.
Last time I checked the level, it stood at 6cm from the top of the lower metre scale on the pier. That was on November 25th. Today, on December 16th – a mere 21 days later – it stood at just shy of 58cm on the upper metre scale. That’s an increase of 48cm or about 19 inches in 21 days. This is astonishing, and is largely due to the heavy rains on already saturated grounds, causing runoff to fill the reservoir. I don’t think anybody ever thought such a rate of fill was remotely possible.
I noticed while I was mooching around the Nine Foot that the red deer had been and had a look before me…
June 24th – I have’t a bloody clue what’s going on here. In one of the four culverts that make up the new dam spillway bridge at Chasewater, someone has piled up the limestone rock ballast into a neat wall. It’s clearly the work of kids – but would have been serious effort, particular bare-handed. It’s oddly admirable, but will have to be removed. Makes you wonder what they could do by applying themselves to something useful…
March 18th – The work at the southern end of Chasewater dam is very near completion. Again, the security had been breached so I swung back to Brownhills along the canal. It’s nice to see that the minor overspill culverts have had grilles fitted over them, like this one at the rebuilt Nine-Foot pool. They were enticingly child sized and I was concerned that some inquisitive urchin might get stuck… I’m looking forward to the dam opening again, even is there’s still no water.
October 8th – Chasewater. It’s all a bit sad. Yesterday, there was a media binge by Staffordshire and Lichfield Councils, who have been working on repairing the 212 year old dam at the currently drained reservoir. Celebrations were afoot because, apparently, the ‘plug’ was going back in and the reservoir would now be allowed to refill naturally. Sadly, the weather has to do the rest and we’re in the driest of dry seasons. The tone of the press releases and media focus was such that whilst stood photographing the unfinished works, several people came up to me and expressed their dismay at the clearly unfinished works. They thought the dam was repaired and the lake full again, which is very far from the truth.
As these images show, although the work on the outlet culvert is now complete, the dam bridge, spillway and other works are still to be finished.
The old outlet culvert is now chambered, and had been built up behind the sectional piling that made up the cofferdam. Slowly, it’s filling up with water.Those square section pipes are what, at the moment, passes for the old bridge, and the dam road is still closed off and impassible. Work here will continue for some months, and a large part of the park will remain inaccessible.
I have real concern for the clubs and businesses that rely on Chasewater for their livelihood. This situation has gone on too long.
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