Lake Rotorua

Lake Rotorua

Integrated Framework

This framework was developed to deliver Lake Rotorua’s sustainable nitrogen limit of 435 tonnes per year. Science tells us that we need to reduce nitrogen from entering the lake by 320 tonnes.

An integrated programme of property nitrogen limits and incentives will be used to achieve the required reductions from land use.




New rules will be developed to achieve a 140 tonne reduction of nitrogen from land use. 

Rules will set a Nitrogen Discharge Allowance for each property.

Landowners will have until 2032 to meet the meet their individual nitrogen allocation.

$2.5 million gorse conversion fund to remove 30 tonnes of nitrogen from the catchment.

Regional Council has until 2022 to help landowners convert 870 hectares of gorse.

$40 million incentive fund to permanently remove 100 tonnes of nitrogen from entering Lake Rotorua.

An additional $5.5 million to support landowners to make decisions about how to reach their Nitrogen Discharge Allowance.

Regional Council has until 2022 to achieve the 100 tonne target.



The remaining 50 tonnes will need to come from engineering solutions. Bay of Plenty Regional Council has completed trials at Tikitere using zeolite to remove nitrogen from geothermal sources and is investigating further engineering solutions to reach the 50 tonne target.