Well, if the catchment area of your reservoir is 10,000 times the size the
reservoir, that means it will rise by 18 m. That should be enough :-)

Cheers, Alastair.

"Keith (Southend)G" wrote in message
ups.com...

1.8mm for me at Southend-on-Sea !

Keith (Southend)
http://www.southendweather.net

Also, the forecaster on News 24 (Jay?)said that today's rainfall would
be
beneficial to gardens in the SE and also help the reservoirs. I wouldn't
have
thought it would make much difference to either if there is only the
predicted 5-10mm.

If you compare the area of land not covered by reservoirs with the area
covered by them, and assume all the land drains into the reservoirs, then
multiplying 10mm by that ratio, I reckon all the reservoirs would overflow
:-)

Cheers, Alastair.