Divert and Use Rainwater

Description

The yard can catch a huge amount of rainwater [Litres= annual rainfall (mm) x area (m2)] over the year. This must be stored (or pumped) if not diverted away prior to entering the effluent system.

Diverters intercept waterflow between yard and sump.  Metal bridge or valve types available.  Useful in high rainfall zones where yards are cleaned twice daily.  Collected rain water is suitable for washing yards. 

Tips on Getting the Best Result

Easy to install if there is one drainage point from yard, need large sump, best if gravity can be used for rainwater diversion. 

Pros and Cons

Reduce effluent volume, improve effluent digestion, capture water for other uses. Manually operated or by air ram.

Need a separate storage for rain water. Only works if the yard is cleaned between milkings. 

Issues in Making it Happen

Labour

Remembering to change value if manual control

Animal Health

Nil

Milk Quality

Nil

Environment

Should reduce effluent storage problems.