These are all the NZ spots that are apparently unsafe to swim at this Summer

A just-launched index has revealed New Zealand's best and worst swimming spots - with some popular sites listed as no-go zones among almost 700 rivers, lakes, and beaches.

The updated LAWA (Land, Air, Water Aotearoa) website now features an online tool that lets people check on their local spots before they head for a dip.

The project is a partnership between 16 regional councils, the Ministry for the Environment and the Cawthron Institute.

Among around 40 spots currently listed as "unsuitable for swimming" was the pools at the top of Gisborne's famous Rere Rockslide and 10 beach sites in Auckland.

"Caution" classifications had been given to more than 20, including Northland's pohutukawa-lined Coopers Beach, Waihi Beach, Taranaki's Onaero Beach and Acacia Bay at Lake Taupo.

Water quality for swimming was generally classified according to weekly sampling results and the overall bacterial risk based on longer-term sampling.

No-go zones

NORTHLAND:

Hatea River, Whangarei Falls; Kerikeri River at the Stone Store; Kerikeri River at Rainbow Falls; Tirohanga River at Tirohanga Road;

AUCKLAND: Armour Bay; Christmas Beach; Clarks Beach; Fosters Bay; Green Bay Beach; Judges Bay; Huia Beach; Mellons Bay; Te Atatu Beach; Titirangi Beach

BAY OF PLENTY: Kaiate Stream; Lake Okaro; Whakatane River

GISBORNE/HAWKES BAY: Rere Rockslide (top); Rere Falls; Clive River (at boat ramp); Tukituki River (at Black Bridge, Haumoana)

MANAWATU/WHANGANUI: 
Hautapu River (at Papakai Park); Kahuterawa Stream (at Sledge Track)

WELLINGTON:

Akatarawa River (at Hutt confluence); Hutt River (at Birchville, Maoribank Corner, Melling Bridge, Poets Park, and Silverstream Bridge).

CANTERBURY: Ashburton River (at SH1); Avon River (at Kerrs Beach); Kaiapoi River (at boat ramp); Lake Hood (at marina site); Lyell Creek (at lagoon); Pareora River (at Pareora Huts); Selwyn River (at Coes Ford and Upper Huts).

OTAGO/SOUTHLAND: Kakanui River (at Clifton Falls Bridge); Lake Hayes (at Mill Creek shallows); Aparima River (at Thornbury);

Caution

NORTHLAND:

Cooper's Beach; Ngunguru Estuary at school

AUCKLAND: Cornwallis Beach; French Bay; Mulberry Grove; Narrow Neck Beach; Orere Pt Beach; Pah Beach

WAIKATO: Acacia Bay, Lake Taupo

BAY OF PLENTY:

Ngongotaha Stream; Waihi Beach

TARANAKI: Kaupokonui River (at Beach Domain); Manganui River (at Everett Park); Onaero Beach (at surf life saving club); Patea River (at King Edward Park scout den); Timaru Stream (at end of Weld Rd); Waingongoro River (at Eltham Presbyterian Camp)

MANAWATU/WHANGANUI: Hokio Stream (at Muaupoko Street Bridge); Lake Wiritoa; Mowhanau Stream (at footbridge); Ongarue River (Cherry Grove); Hokio Beach

TASMAN/MARLBOROUGH: Taylor River at at Riverside Park

WEST COAST/CANTERBURY: Buller River at Marrs Beach; Kaniere River (at Kaniere-Kokatahi Rd Bridge); Gooches Beach; Waihao River

OTAGO/SOUTHLAND: Taieri River (at Waipata); New River Estuary (at Omaui)

This article was first published on nzherald.co.nz and is republished here with permission.