Ministry of Lands, Spatial Planning and Natural Resources

Mālō e lelei

Kingdom of Tonga

Understanding the earth beneath Tonga

The Natural Resources Division studies earthquakes, volcanoes, tsunamis and the rocks and land of our islands, so communities can stay informed and stay safe.

Language / Lea:
TONGATAPU HYDROLOGICAL DROUGHT ADVISORY – 28 OCTOBER 2026FALEʻI KI HE TUʻUNGA HONGE VAI – TONGATAPU – 28 ʻOKATOPA 2026

Current advisoryFale‘i lolotonga

Hydrological Drought Advisory poster, 28 October 2026 Fale‘i ki he tu‘unga honge vai, 28 ‘Okatopa 2026 (Tongan-language poster): Hihifo – Kulokula, Tu‘unga 3; Nuku‘alofa mo e ngaahi kolo takatakai – Moli, Tu‘unga 2.

What the colours meanFakahinohino ki he ngaahi lanu ‘o e tu‘unga honge vai

Hydrological Drought Colour Guide. Green, Level 0, Normal: water resources within expected seasonal range; use water responsibly. Yellow, Level 1, Watch: early signs of pressure; conserve water, check leaks and prepare. Orange, Level 2, Warning: water resources deteriorating; increase conservation and follow Ministry and water supplier advice. Red, Level 3, Severe Drought: significant impacts on water supplies likely; take urgent conservation action and report supply concerns. Blue, Recovery: conditions improving but recovery not confirmed; continue conservation and follow updates. Grey, Insufficient Information: not enough reliable information to assign a level; further monitoring required. Statuses apply to the area specified in each Ministry notice; any mandatory restrictions will be announced separately.Fakahinohino ki he ngaahi lanu ‘o e tu‘unga honge vai (Tongan-language colour guide).

Hihifo: Red, Level 3 (severe). Nuku'alofa Greater Urban Area: Orange, Level 2. Please conserve water and report leaks or supply concerns to your village water committee or water supplier. Any mandatory restrictions will be announced separately. Read the full advisory

HA'APAI HYDROLOGICAL DROUGHT ADVISORY – NOTICE 2 – 4 NOVEMBER 2026FALEʻI KI HE TUʻUNGA HONGE VAI ʻI HAʻAPAI – FANONGONONGO FIKA 2 – 4 NŌVEMA 2026

Red · Level 3 – SevereKulokula • Tu‘unga 3 — Honge vai

Ha'apai Hydrological Drought Advisory, Notice 2, 4 November 2026. Red, Level 3, Severe Hydrological Drought: affected part of the TWB Hihifo-Pangai supply area, Lifuka. TWB Well 118 conductivity 2,289 to 5,610 microsiemens per cm, up 145 percent (2025 to 2026 survey). LIF9 monitoring borehole: freshwater lens 2.1 m in July 2026, 56 percent thinner than January 2014. Protect essential water supplies and stored water; minimise non-essential use, conserve tank water, report urgent supply needs. Review within two weeks of issue.Fale‘i ki he tu‘unga honge vai ‘i Ha‘apai, Fanongonongo Fika 2 (Tongan-language poster): Kulokula, Tu‘unga 3 — Honge vai.

Orange · Level 2 – WarningMoli • Tu‘unga 2 — Fakatokanga ki he honge vai

Ha'apai Hydrological Drought Advisory, Notice 2, 4 November 2026. Orange, Level 2, Hydrological Drought Warning: Lifuka (Koulo 1,981 to 6,425 microsiemens per cm, up 224 percent; Holopeka 7,988 to 12,700, up 59 percent), Foa (Fotua 4,656 to 10,400, up 123 percent), 'Uiha ('Uiha village 903 to 10,300, up 1,041 percent; Felemea 1,833 to 12,000, up 555 percent). Conductivity indicates salinity at the source; it does not establish household drinking-water safety. Reduce non-essential use, report supply problems, follow health advice.Fale‘i ki he vahefonua Ha‘apai, Fanongonongo Fika 2 (Tongan-language poster): Moli, Tu‘unga 2 — Fakatokanga ki he honge vai.

Yellow · Level 1 – WatchEngeenga • Tu‘unga 1 — Tokanga ki he honge vai

Ha'apai Hydrological Drought Advisory, Notice 2, 4 November 2026. Yellow, Level 1, Hydrological Drought Watch: Lifuka (Koulo, Holopeka and TWB Hihifo-Pangai), Foa (Fotua, Lotofoa, Fangale'ounga and Faleloa / Ha'ateiho Si'i), 'Uiha ('Uiha village and Felemea), Ha'ano, Kauvai (Pukotala and Fakakai). Conserve water, fix leaks, report supply concerns. Review within one month of issue or sooner if conditions worsen.Fale‘i ki he tu‘unga honge vai ‘i Ha‘apai, Fanongonongo Fika 2 (Tongan-language poster): Engeenga, Tu‘unga 1 — Tokanga ki he honge vai.
Ha'apai (monitoring 27 July – 4 August 2026):
  • Red, Level 3 (severe): affected part of the TWB Hihifo–Pangai supply area, Lifuka.
  • Orange, Level 2: Koulo and Holopeka (Lifuka), Fotua (Foa), 'Uiha village and Felemea ('Uiha).
  • Yellow, Level 1: Lotofoa, Fangale'ounga and Faleloa / Ha'ateiho Si'i (Foa); Pukotala and Fakakai (Ha'ano, Kauvai).
Conductivity shows salinity at the source; it does not establish household drinking-water safety. Follow Ministry of Health advice. Enquiries: 740 1325 · enquire@naturalresources.gov.to
  • Drought declared

    Tongatapu, 'Eua, Ha'apai, Niuatoputapu

    Rainfall well below normal. Use water carefully.

  • Drought warning

    Niuafo'ou

    Conditions are worsening. Prepare and save water now.

  • Drought alert

    Vava'u

    Some rain has fallen, but levels are still low. Stay alert.

Drought map

Latest readings

Area and levelLatest reading

Click an area name to show it on the map. Salinity is measured at the water source; it does not show whether household drinking water is safe. Follow Ministry of Health advice.

The island and colour buttons change both the map and the readings list. Levels come from the Tongatapu advisory (28 October 2026) and Ha'apai Notice 2 (4 November 2026). Circles mark assessed water supplies, not whole villages.

What drought means for groundwater

Most of our islands rely on a thin lens of fresh groundwater that floats on top of seawater. When dry spells last for months, the lens gets thinner and wells can turn salty.

Our Water Resources Management Section monitors village groundwater on Tongatapu, Ha'apai and Vava'u, and advises government and communities on how to protect supplies.

How you can help

  • Use rainwater and tap water only for what you need. Save drinking water for drinking and cooking.
  • Fix leaking taps, pipes and tanks, and keep tank lids closed and clean.
  • Do not over-pump wells. Pumping too hard can draw seawater in.
  • Reuse washing water on gardens where you can.
  • Report salty or unusual well water to our office.

Drought status from the Tonga Meteorological Service. For water distribution and emergency support, contact the National Emergency Management Office.

Va'a Tokangaekina 'o e Ngaahi Koloa Fakaenatula

Natural Resources Division

This division contributes to the promotion of a diverse economy by stimulating economic growth through the responsible use of our natural resources. This includes water, ocean, land, minerals and aggregates. It also supports the protection of the environment by ensuring sustainable management of our natural resources and by supporting responsible development.

Three Natural Resources staff on a boat watching a large plume of ash and steam rising from a volcano

Latest news

Follow us on Facebook

Our newest updates on earthquakes, volcanoes, tsunami, water and coastal work are posted on our Facebook page.

Visit our Facebook page ↗

Our vision & mission

Contact us

Questions about earthquakes, volcanoes, geology or our work? Get in touch.

Phone

Call our office.

+676 740-1325

Email

Send us a message.

enquire@naturalresources.gov.to

Website

Visit our website.

www.naturalresources.gov.to

Visit us

Come and see us.

Vaololoa, Nuku'alofa, Tongatapu

Working hours

Monday to Friday

8:30 am to 4:30 pm