If you plan on using a Trommel in the Desert then you need to take a look at this design for recirculating the water.

We met Allan out on his claim and decided to stop by to take a look at his invention....the de-watering screw.
It works really well and helps reclaim your water.

For more on his Design check out his videos at the link...
   • Allan's Gold Mining Trommel Wash Plant  
   • Gold Mining Dry Washer - How to Maxim...  

If you do see Allan out in Lost Basin make sure you stop by to say
" Howdy " and if you ask nicely he just might show you where the Gold is.