Table 10: Lake water quality monitoring done by regional councils in 2006 - programme summary

Northland Regional Council

30

39

2

Quarterly

Temperature, DO, EC, secchi depth, SS, Chl a, pH, TN, TP, SS, VSS, and phytoplankton identification, DO-temperature profile

Lake Carrot, Heather, Morehurehu, Ngapua, Ngakeketa, Ngakeketa north, Ngatu, Rotokawau, Rotoroa, Te Kahika, Te Paki dune, Wahakari, Waihopo, Waipara, Waiparera, Waiporohita, Kai iwi, Midgeley, Taharoa, Waikere, Humuhumu, Kahuparere, Kanono, Kapoai, Karaka, Mokeno, Rotokawau, Rototuna, Wainui, Lake Omapere.

Auckland Regional Council

7

2

2*

Bimonthly

Temperature, pH, chloride, EC, turbidity, secchi depth, SS, BOD, NNN, NH4-N, TKN, TP, DRP, Chl a, DO-temperature profile, E. coli, phytoplankton count and identification, zooplankton.

Lake Ototoa, Pupuke, Tomarata, Wainamu, Kereta, Kuwakatai, Spectacle

Environment Waikato

15 (4 of which are on hold)**

33

7 + 1 additional to SOE (also three Waikato hydro lakes)

Monthly.  Bimonthly for Waahi, Waikare and Whangape

Secchi depth, TKN, TP, Chl a, NNN, NH4, DRP, EC, pH, DO, TOC, DIN, turbidity, SS, VSS, absorbency, phytoplankton count and identification, DO-temperature profile.  Water level.

Lake Taupo.  Peat Lakes (Ngaroto, Rotokauri, Rotomanuka North, Rotomanuka South, Lake Rotoroa, Lake Mangakaware, Lake Rotopiko East, Rotopiko North).  Riverine Lakes (Waahi, Waikare, Whangape, Lake Hakanoa, Lake Mangahia, Lake Maratoto).  Also, bathing beach monitoring on Lake Kainui assesses cyanobacteria.

Environment Bay of Plenty

12

12

7

Monthly

EC, pH, secchi depth, TN, TP, TKN, NNN, Chl a, phytoplankton count and identification.  Profiles of temperature-DO-fluorescence-turbidity-radiation.  Also assessment of koura and kakahi.

Lake Rotorua, Rotoiti, Okareka, Okaro, Rotoehu, Tarawera, Rotoma, Tikitapu, Okataina, Rotomahana, Rerewhakaaitu, Rotokakahi

Taranaki Regional Council

1

0

1
(additional to SoE)

4 times per annum

EC, pH, turbidity, secchi depth, SS, NNN, NH4-N, TN, TKN, TP, DRP, Chl a, DO‑temperature profile, benthic macroinvertebrates, phytoplankton scan and identification. E.Coli is measured at Lake Rotomanu only as part of the annual bathing beach survey)

Lake Rotorangi, Lake Rotomanu (bathing beach monitoring)

Gisborne District Council

1

0

0

Bimonthly

Turbidity, ammonia, sulphate, DRP, BOD, total and calcium hardness, chloride, sodium, potassium, suspended solids, faecal coliforms, Enterococci, pH, DO

Ratahi Lagoon

Hawke’s Bay Regional Council

0 (8 starting September 2006)

0

0

Monthly

n/a

Lake Kaweka (year 1, 2), Runanga, Oingo (year 3, 4), Opouahi, Rotonuiaha, Tutira (year 5, 6), Waikaremoana, Waikareiti (year 7, 8)

Horizons Manawatu-Wanganui Regional Council

1

0#

4
(3 additional)

Monthly

Temperature, DO, pH, EC, Chl-a, NNN, NH4-N, TN, TP, DRP, turbidity, secchi depth, E. coli

Lake Horowhenua (SoE monitoring and bathing beach monitoring), Lake Pauri, Lake Wiritoa and Lake Dudding (bathing beach monitoring)

Greater Wellington Regional Council

1

0

0*

Quarterly

Temperature, pH, EC, DO, turbidity, SS, VSS, NNN, NH4-N, TKN, TP, DRP, Chl a, secchi depth, faecal coliform.

Lake Wairarapa

Marlborough District Council

0

0

0

n/a

n/a

n/a

Nelson City Council

0

0

0

n/a

n/a

n/a

Tasman District Council

0

0

0

n/a

n/a

n/a

Environment Canterbury

High country

Lowland

22

4

0

0

0*

0

Monthly December–April

Monthly and fortnightly

TN, TP, Chl a, NNN, NH4, DRP, phytoplankton taxa.

Also for lowland lakes: (SS, DO salinity, temperature, secchi depth).

High country: Lake Sumner, Loch Katrine, Taylor, Pearson, Sarah, Grasmere, Hawdon, Lyndon, Georgina, Selfe, Ida, Coleridge, Heron, Clearwater, Camp, Emma, Tekapo, Alexandrina, Pukaki, Ohau, Benmore.

Lowland: Lake Ellesmere/Te Waihora, Lake Forsyth/Te Wairewa, Coopers Lagoon, Wainono Lagoon.

West Coast Regional Council

1

0

0*

Quarterly

TN, TP, Chl a, NNN, NH4, DRP, DO‑temperature profile, secchi depth.

Lake Brunner (Lake Kaniere for bathing beach only)

Otago Regional Council

10

0

0*

Bimonthly and monthly

TN, TP, NNN, NH4-N, DRP, EC, pH, DO, Chl-a, secchi depth, DO‑temperature profiles, E. coli bacteria.

Lake Waipori, Waihola, Hayes, Johnson, Onslow, Wakatipu, Wanaka, Hawea, Tuakitoto, Dunstan.

Environment Southland

4

0

0*

Monthly

EC, pH, Chl-a, NNN, NH4-N, TN, TP, DRP, turbidity, VSS, TSS, secchi depth, DO-temperature profiles.

Lake Te Anau, Lake Manapouri, Waituna Lagoon.  Mavora Lake South (outlet sampled as part of river monitoring network).

Chatham Islands Council (monitored on behalf by Environment Canterbury)

10

0

0

Quarterly

Black disc, TN, TP, Chl-a, NNN, NH4, DRP, EC, pH, DO, TOC, DIN, TON, sulphate

Lake Tennants, Kaingarahu, Rangitai, Wharemanu, Huro, Causeway, Te Wapu, Koomutu, TeRoto, Marakapia.

Total

119

84

23