The StormHarvester rainfall forecast and runoff prediction technology works by checking forecasted information and determining a “safe level” for water within the tank every 5 minutes.
For the majority of rainfall events (low intensity and short duration events) the system only lowers the water level in the tank by a small percentage. In practice, water levels in the tank are regularly already well lower than the small percentage reduction required given that water is constantly being pumping out of the harvesting tank for reuse on the associated site.
The more intense rainfall events (short intense rainfall events (cloudbursts) are predicted using a combination of atmospheric pressure and rainfall forecasts. Cloudburst events will only occur when certain atmospheric pressure conditions are present. The StormHarvester system therefore continually monitors forecasted atmospheric conditions and when conditions conducive to a cloud burst are predicted automatically drains all tanks in the area effected at greenfield rates in preparation for the storm event.