Don't let clams hitch a ride
Did you know that freshwater weeds and pests, like the invasive clam, can spread through your activities in lakes and rivers?
If you’ve recently visited a lake, river, stream, or wetland and plan to head to another, it’s important to 'Check Clean Dry' your gear and your boat, or kayak or paddleboard to prevent harmful species from hitching a ride with you.
Note that there are different treatment requirements for the North and South Island.
You need to meet the requirements of Controlled Area Notices (CANs) that are in place for the Waikato River, Te Arawa lakes and Lake Ōkataina. The CANs have specific requirements for each area.
These rules are in place because any movement of craft between waterways poses a risk of spreading the freshwater clam to areas that are not infested.
Follow this 'Check Clean Dry' guide for all North Island lake and river users
Tell us if you find freshwater clams
Keep an eye out for Corbicula and report suspected sightings to us. Take a photo, if possible, and note the location. Then either:
- freephone 0800 809 966
- or complete the online form at report.mpi.govt.nz
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