Indian mining giant Adani has been fined $12,000 for a stormwater breach at its Abbot Point coal terminal during Tropical Cyclone Debbie.

The Adani-owned Abbot Point Bulk Coal was granted a temporary licence to more than triple its "suspended solids" releases during the severe weather in March.

The coal export facility at Abbot Point.

But the Department of Environment and Heritage Protection claimed more than eight times that amount was released into the ocean near the north Queensland facility.

The fine did not relate to water released into the surrounding wetlands, which was still under investigation.