A Rotorua forestry company and a Coromandel forestry contractor have been fined more than $50,000 for carrying out unlawful forest harvesting.

The case was brought by the Waikato Regional Council, following the harvesting at a remote Coromandel farm between February and May 2011.

During the harvest, two steep gullies were left with forestry debris which could have blocked waterways.

Professional Harvesting of Rotorua has been fined just over $29,000, while contractor James McCulloch was fined $21,000, after they both pleaded guilty to a charge laid under the Resource Management Act.