Company lists · Data refreshed November 2026

Top 25 Hydrology and hydraulics consultants worldwide

RevenueBase identified 4,516 company matches for hydrology and hydraulics consultants worldwide as of November 2026 and tracks 115,788 professional contacts across them, including 47,047 with verified work emails. The United States is the largest market and Tehran the largest hub.

This list covers company matches for hydrology and hydraulics consultants worldwide, 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 November 6, 2026. Country and city lists for hydrology and hydraulics consultants follow the table.

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 Nov 6, 2026 How this list was built
4,516Companies
115,788Contacts tracked
47,047Verified emails
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The 25 largest hydrology and hydraulics consultants worldwide

Ranked by team size
Top 25 of 4,516 company matches for hydrology and hydraulics consultants worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 matchPasadena, CA, United StatesHQ recorded Nov 6, 202610001+14,232 contacts →

Exact match

“Tetra Tech is the leader in water, environment and sustainable infrastructure, providing high-end technical and engineering services for projects worldwide.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchOlathe, NE, United StatesHQ recorded Nov 6, 20265,001-10,0006,576 contacts →

Exact match

“Terracon is a 100 percent employee-owned consulting engineering firm providing quality services to clients.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchBoca Raton, FL, United StatesHQ recorded Nov 6, 20261,001-5,0002,553 contacts →

Exact match

“Geosyntec is a consulting and engineering firm that works with private and public sector clients to address new ventures and complex problems involving our environment, natural…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchWalnut Creek, CA, United StatesHQ recorded Nov 6, 20261,001-5,0002,553 contacts →

Exact match

“Headquartered in Walnut Creek, Calif, Brown and Caldwell is an employee-owned firm with 2,100+ professionals serving clients locally and globally from 52 locations.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchNew York, CO, United StatesHQ recorded Nov 6, 20261,001-5,0002,306 contacts →

Exact match

“As Hazen marks 75 years, we celebrate a legacy of absolute commitment to our clients while delivering the best technical work available anywhere.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchWoburn, MA, United StatesHQ recorded Nov 6, 20261,001-5,0001,675 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchFort Worth, TX, United StatesHQ recorded Nov 6, 20261,001-5,0001,588 contacts →

Exact match

“Freese and Nichols is a professional planning, consulting and engineering firm serving clients across the United States.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchHørsholm, DenmarkHQ recorded Nov 6, 20261,001-5,0001,544 contacts →

Exact match

“There is no substitute for water.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchMobile, AL, United StatesHQ recorded Nov 6, 20261,001-5,0001,244 contacts →

Exact match

“Volkert’s history began in 1925 when it was founded in New Orleans as Doullut & Erwin to provide waterfront and heavy construction services, as well as airport design services…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchLong Beach, FL, United StatesHQ recorded Nov 6, 20261,001-5,0001,202 contacts →

Exact match

“Moffatt & Nichol is a leading U.S-based global infrastructure advisor specializing in the planning and design of facilities that shape and serve our coastlines, harbors and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchVitacura, ChileHQ recorded Nov 6, 202610001+1,079 contacts →

Exact match

“WSP en una empresa líder en servicios profesionales de consultoría en recursos hídricos, ingeniería, medio ambiente y sustentabilidad.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchSeattle, WA, United StatesHQ recorded Nov 6, 2026501-1,000923 contacts →

Exact match

“At Parametrix, we help our clients imagine what's possible.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchVancouver, NB, CanadaHQ recorded Nov 6, 2026501-1,000909 contacts →

Exact match

“KCB is a global engineering, geosciences, and environmental consulting firm driven by Passion, Integrity and a commitment to Excellence.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchEncinitas, CA, United StatesHQ recorded Nov 6, 2026501-1,000829 contacts →

Exact match

“Dudek is an environmental, planning, and engineering consulting firm.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchOlivet, FranceHQ recorded Nov 6, 20261,001-5,000824 contacts →

Exact match

“Antea Group est une société internationale d’ingénierie et de conseil en environnement.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchMedellín | Bogotá | Lima | Miami | Nueva Delhi, ColombiaHQ recorded Nov 6, 20261,001-5,000809 contacts →

Exact match

“Over six decades offering our consultancy services locally and internationally, based on ethical principles and commitments, always through honest, socially responsible actions…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchIselin, NJ, United StatesHQ recorded Nov 6, 20261,001-5,000800 contacts →

Exact match

“This page is now closed.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchShinjuku-ku, JapanHQ recorded Nov 6, 2026201-500783 contacts →

Exact match

“Oriental Consultants Global is a consulting company based in Japan that facilitates development in countries all around the world.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchRio De Janeiro, BrazilHQ recorded Nov 6, 2026201-500696 contacts →

Exact match

“Sondotécnica was founded in 1954.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchHouston, TX, United StatesHQ recorded Nov 6, 2026501-1,000681 contacts →

Exact match

“Quiddity is an award-winning, full-service civil engineering, planning, surveying, and consulting firm providing innovative solutions for public infrastructure and private…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchBangalore, IndiaHQ recorded Nov 6, 2026501-1,000618 contacts →

Exact match

“SECON Private Limited is an ISO 9001:2015, CMMI Level 3, ISO/IEC 27001:2013 and NABL ISO/IEC 17025:2017 Accredited Firm having corporate office at Bangalore and regional offices…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchWellington, New ZealandHQ recorded Nov 6, 20261,001-5,000600 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchSan Francisco, CA, United StatesHQ recorded Nov 6, 2026201-500593 contacts →

Exact match

“For over 100 years, Kennedy Jenks has provided engineering and scientific solutions for innovative water and environmental projects.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchAmman, JordanHQ recorded Nov 6, 2026501-1,000577 contacts →

Exact match

“Engicon is a multidisciplinary consulting engineering firm based in Amman.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchMiddletown, NJ, United StatesHQ recorded Nov 6, 2026201-500540 contacts →

Exact match

“T&M Associates is a leading engineering and technical services firm focused on innovative solutions that advance our clients’ goals and sustain communities.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 4,516 hydrology and hydraulics consultants worldwide

See the full list, filter by size, metro and specialty, and access 47,047 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Hydrology and hydraulics consultants worldwide at a glance

As of Nov 6, 2026
40.6%Verified-email coverage
25.6Average contacts per company
1-10Median size (employees)
0.9%Largest-city concentration · Tehran
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
2,441
11-50
1,410
51-200
431
201-500
111
501-1,000
31
1,001-5,000
38
5,001-10,000
3
10001+
5

Email recency is reported on each country list linked below.

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.
Coverage
Every country. Country and city lists for hydrology and hydraulics consultants are linked below.
What qualifies
Company records worldwide whose business descriptions match “hydrology and hydraulics consultants” 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. 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 47,047 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 November 6, 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.

Hydrology and hydraulics consultants by location

22 lists · largest first

Every Hydrology and hydraulics consultants list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 “hydrology and hydraulics consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many hydrology and hydraulics consultants are there worldwide?

RevenueBase identified 4,516 company matches for hydrology and hydraulics consultants worldwide as of November 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?

Tetra Tech tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most hydrology and hydraulics consultants?

The United States leads with 1,052 companies, followed by Australia (260) and France (230). Every hydrology and hydraulics consultants list by country and city is linked on this page.

Which city has the most hydrology and hydraulics consultants?

Tehran leads with 42 company records, followed by Sydney (33) and Belo Horizonte (31).

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 47,047 professional contacts with verified work emails tracked across these 4,516 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 November 6, 2026.

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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.