How do I reduce the size of my pond.

[Helpneeded]

Hi very interested in your thread sorry to hijack with my own problem! I have a pond that sounds very similar. It's around 25ft by 15ft so rather large and sits under willow and oak tree. Taking up way too much of the garden. We want to reduce it by half maybe even two thirds. Presently it is old and is a soak away for cow fields surface water we believe from fields up the back as it used to be a farm and now has various properties on the land.
The pond drains dry every summer and is empty but is always full over the rainy season, previous owners have installed an over flow so it cannot reach above a certain level and flood the garden. We would like to keep the over flow and have some water plants in the reduced pond. There has never been fish as the pond is empty and dry every summer but we have plants around the pond that attract butterflies and bees etc and we have the occasional duck take a dip at this time of year. We have frogs that visit and lay their eggs but the tadpoles will develop and hop off before the pond is dry. Previous owners had an ecological survey and it states the pond is of low ecological value.
Any suggestions? Who is a specialist in this area what should I google? Groundsmen? Groundworks? Drainage specialists? To me it just isn't a pond it's a massive soak away I would like a nice pond for wildlife to flourish. I must also add it is quite smelly! Help appreciated

 

[Helpneeded]

Sorry I should add this is 100% on clay ground notorious for slow draining and there is a lot of silt at the bottom of the pond. The pond is relatively low around 1 ft deep of water but can fill to 3ft when we have heavy rain

 

[Mmathis]

@Helpneeded You have tagged onto an old thread, and apparently the OP never got back with us so we don’t know what advice he took, or what his outcome was, etc. You might want to start a new thread and explain more about YOUR particular pond and what’s going on.

 

[Helpneeded]

Thank you for your help, I will begin a new thread and hopefully get some direction on what to do next

 

[addy1]

I moved it for you

 

[j.w]

@Helpneeded

 

[GBBUDD]

LETS START WITH SOME PICTURES OF THE AREA. aparently you have an earthen pond NO LINER