Water Delivery

[Durian Fiend]

So... apparently the drought isn't our only problem.  After noticing that the only grass that isn't dying is right around our catchment tank we felt around and the ground around it is damp.  I suspected we had a small leak but this is something more substantial. 

Sigh.

So, what to do?  

I've had a very small leak for several years.  It's evident from the wet concrete in one spot along the ring.  Not enough to make a dent in the water level, fortunately.  I suspect that my ill conceived, home made overflow damaged the liner.  

This leak has been easy to live with, except now the metal is beginning to get rusty in that spot. 

Drain and repair is the only answer...