Over night a sink hole has appeared in Tunstall Park's lake, believed to have been caused by the collapse of a short depth pit tunnel collapsing.
The water has stopped escaping and the lake has now settled with the hole temporarily sealing itself.
Stoke-on-Trent City Council have arranged for the specialist clay used for these occasions to be dug and delivered and hopefully professionally sealed tomorrow.
However, even though the water level is now stable it is dangerously low for the fish and muscles in the lake.
In parts of the lake the water has virtually gone, leaving small pockets of fish trapped, whilst in other part of the lake there is now a danger of the oxygen in the lake evaporating killing the fish. Around the edges muscles now have a race against time for the water to fill up enough.
Stoke-on-Trent City Council's Fisheries expert is currently out rescuing another set of fish so hasn't been able to come to the scene, but the Environment Agency, whose task it is to check the water quality have recommended the fish should be rescued.
If the impending lack of oxygen doesn't kill off the fish, the bigger predators will such as seagulls, heron and so on.
The primary source of water from the pool as I found out today comes from a stream that runs from Chatterley Whitfield down to Tunstall Park's Pool, which you can see at the top of the park, by the water feature.
It looks like everyone is onto the problem now, it's just a matter of resources.
On a slightly different not, it was nice to see the lake bed not as covered in rubbish as I expected thanks to the councils groundsmen who cleared the pool towards the end of 2012.
Also congratulations go to Mrs Duck and her beautiful and fluffy ducklings.