Very interesting scenario here :-)

My daughter and son in law had a swampy bit in their garden, so they got the
digger in and dug a pond, about 80 ft. diameter. What they had was the
'supply' to the Village Pond, so when we have excess rain, the pond fills up
then overflows to the village pond. The Island in the middle is home to Duck
and Moorhen nests and chicks.

Mike




"Janet" wrote in message
t...

In article ,
says...

On Fri, 26 Jul 2013 12:17:59 +0100, Another John
wrote:

In article ,
Stephen Wolstenholme wrote:

It's years since I needed to store a lot of rainwater. After trying
water butts I decided to dig a pond. The house roof drainage was
redirected to keep the pond full. Water was taken from the pond as
needed from a constantly running waterfall pump.

Nice. How bigs the pond, please?

John

It was about 4000 litres.

What happened in winter to the overflow, when roof drainage continued
to fill the pond and you didn't need to water the garden?

Janet.