Company lists · Data refreshed September 2026

Top 25 Hydrological consulting firms based in New Zealand

RevenueBase identified 54 company matches for hydrological consulting firms associated with New Zealand as of September 2026 and tracks 1,304 professional contacts across them, including 608 with verified work emails. Auckland is the largest hub.

This list covers company matches for hydrological consulting firms associated with New Zealand, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 28, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 28, 2026 How this list was built
54Companies
1,304Contacts tracked
608Verified emails
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The 25 largest hydrological consulting firms based in New Zealand

Ranked by team size
Top 25 of 54 company matches for hydrological consulting firms based in New Zealand, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchWellington, New ZealandHQ recorded Sep 28, 20261,001-5,000568 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
2Exact matchAuckland, New ZealandHQ recorded Sep 28, 2026201-500277 contacts →

Exact match

“PDP is one of Aotearoa New Zealand’s leading environmental science, engineering, and advisory consultancies.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
3Exact matchTakapuna, New ZealandHQ recorded Sep 28, 202651-20084 contacts →

Exact match

“Our company has evolved from humble yet visionary origins to become the multi-disciplinary consultancy it is today.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
4Exact matchTakapuna, New ZealandHQ recorded Sep 28, 202611-5043 contacts →

Exact match

“GWE Consulting Engineers is a multi-disciplinary engineering consultancy providing geotechnical, civil and water, environmental, wastewater and stormwater engineering services and…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
5Exact matchWellington, New ZealandHQ recorded Sep 28, 202611-5040 contacts →

Exact match

“Damwatch is a highly respected niche consultancy business based in Wellington, New Zealand and provide services to hydropower, water and irrigation clients internationally.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6Exact matchWellington, New ZealandHQ recorded Sep 28, 202611-5037 contacts →

Exact match

“Awa Environmental is shaping stormwater to reduce flood risk, protect critical assets and infrastructure, and build resilient communities and thriving ecosystems.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
7Exact matchAuckland, New ZealandHQ recorded Sep 28, 202611-5026 contacts →

Exact match

“Trusted, Innovative, Water Solutions.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8Exact matchChristchurch, New ZealandHQ recorded Sep 28, 202611-5024 contacts →

Exact match

“Aqualinc Research Limited is an independent provider of research-based consulting services for water and land management.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
9Exact matchKumeu, New ZealandHQ recorded Sep 28, 202611-5016 contacts →

Exact match

“Williamson Water & Land Advisory (WWLA) is a New Zealand based, employee owned, niche environmental consultancy.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10Exact matchTimaru, New ZealandHQ recorded Sep 28, 202611-5015 contacts →

Exact match

“Irricon Resource Solutions is a leading environmental consultancy based throughout Canterbury, Otago and the North Island.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
11Exact matchHawkes Bay, New ZealandHQ recorded Sep 28, 202611-5013 contacts →

Exact match

“Stradegy is a Hawke's Bay-based environmental planning and resource management consultancy providing expert planning and environmental services to local government and private…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
12Exact matchHamilton, New ZealandHQ recorded Sep 28, 202611-5012 contacts →

Exact match

“MetOcean Solutions is a science-based consultancy that offers specialist numerical modelling and analytical services in meteorology and oceanography.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13Exact matchParnell, New ZealandHQ recorded Sep 28, 202611-5012 contacts →

Exact match

“HAL Consulting Ltd (HAL) is a niche engineering consultancy that specialises in wastewater, stormwater and water supply network modelling and strategic planning, and data…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14Exact matchHamilton, New ZealandHQ recorded Sep 28, 20261-1011 contacts →

Exact match

“Te Miro Water provides advisory services in the green infrastructure, stormwater and flood risk management industries.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
15Exact matchChristchurch, New ZealandHQ recorded Sep 28, 20261-1010 contacts →

Exact match

“Specialist engineering consulting firm with expertise in hydraulic modelling of rivers and streams, river engineering, geomorphology, hydrology and hydrologic modelling, remote…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16Exact matchTaupo, New ZealandHQ recorded Sep 28, 202611-509 contacts →

Exact match

“Traverse Environmental is a professional services consultancy specialising in planning, freshwater science and project management.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
17Exact matchChristchurch, New ZealandHQ recorded Sep 28, 202611-509 contacts →

Exact match

“e2Environmental is a highly experienced, full service civil engineering consultancy specialising in water engineering and land development.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18Exact matchAuckland, New ZealandHQ recorded Sep 28, 202611-509 contacts →

Exact match

“We offer Consulting Services in the following fields: Civil & Environmental Engineering, Structural Engineering, Land Surveying and Resource Management Planning.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19Exact matchRaglan, New ZealandHQ recorded Sep 28, 20261-109 contacts →

Exact match

“eCoast is a New Zealand-based marine and freshwater consultancy providing expert technical and advisory services to both public and private sector clients in NZ, Australasia, the…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
20Exact matchAuckland, New ZealandHQ recorded Sep 28, 20261-106 contacts →

Exact match

“Submergent Limited provides computer modelling services to the New Zealand water engineering industry.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
21Exact matchChristchurch, New ZealandHQ recorded Sep 28, 20261-106 contacts →

Exact match

“Instream Consulting provides practical, expert advice on ecology and water quality to a range of clients from the private and public sector.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22Exact matchNew Plymouth, New ZealandHQ recorded Sep 28, 20261-105 contacts →

Exact match

“Wai Comply is a compliance advisory and consulting company that aims to deliver a high-quality service to the Drinking-Water sector.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23Exact matchChristchurch, New ZealandHQ recorded Sep 28, 20261-105 contacts →

Exact match

“With mounting pressure on our water resources from land use intensification, population growth and climate change, the need for innovative, inclusive and holistic water management…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
24Exact matchRukuhia, New ZealandHQ recorded Sep 28, 20261-104 contacts →

Exact match

“Neuflow Projects are a team of project specialists encompassing innovative conceptual planning, investigations and feasibility studies, preliminary designs, detailed designs…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
25Exact matchAuckland, New ZealandHQ recorded Sep 28, 20261-103 contacts →

Exact match

“B&A are a specialist team of engineers, environmental scientists and planners.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase

Showing 25 of 54 hydrological consulting firms based in New Zealand

See the full list, filter by size, metro and specialty, and access 608 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Hydrological consulting firms based in New Zealand at a glance

As of Sep 28, 2026
46.6%Verified-email coverage
24.1Average contacts per company
1-10Median size (employees)
29.6%Largest-city concentration · Auckland
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
35
11-50
16
51-200
1
201-500
1
1,001-5,000
1

Email recency for this list is measured worldwide rather than for New Zealand, so it is reported there. Company counts and contact totals on this page are exact for New Zealand, over 54 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with New Zealand whose business descriptions match “hydrological consulting firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 608 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 28, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “hydrological consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many hydrological consulting firms are there based in New Zealand?

RevenueBase identified 54 company matches for hydrological consulting firms associated with New Zealand as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Opus International Consultants Limited tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most hydrological consulting firms?

Auckland leads with 16 company records, followed by Christchurch (10) and Palmerston North (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 608 professional contacts with verified work emails tracked across these 54 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 28, 2026.

Ready to reach these companies? Verified emails and direct dials for all 54 hydrological consulting firms based in New Zealand. Start with a free account, no credit card.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.