Company lists · Data refreshed November 2026

Top 25 Hydrological modeling companies worldwide

RevenueBase identified 837 company matches for hydrological modeling companies worldwide as of November 2026 and tracks 11,743 professional contacts across them, including 4,449 with verified work emails. The United States is the largest market and Lima the largest hub.

This list covers company matches for hydrological modeling companies 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 hydrological modeling companies 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
837Companies
11,743Contacts tracked
4,449Verified emails
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The 25 largest hydrological modeling companies worldwide

Ranked by team size
Top 25 of 837 company matches for hydrological modeling companies 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 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
2Exact 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
3Exact matchWallingford, United StatesHQ recorded Nov 6, 2026201-500332 contacts →

Exact match

“We design smart, resilient solutions across the natural and built environments to help everyone live and work more sustainably with water.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchEdmonton, BC, CanadaHQ recorded Nov 6, 202651-200217 contacts →

Exact match

“As the effects of climate change advance across the world, understanding water and its many functions in both natural and built environments has never been more urgent.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchVancouver, BC, CanadaHQ recorded Nov 6, 202651-200151 contacts →

Exact match

“Headquartered in Vancouver BC Canada, Aquatic Informatics has provided software solutions for 20 years that address critical water data management, analytics, and compliance…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchTucson, CA, United StatesHQ recorded Nov 6, 202651-200133 contacts →

Exact match

“M&A is a water resource consulting firm that partners with clients to address their evolving water resource challenges.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchBelo Horizonte, BrazilHQ recorded Nov 6, 202651-200117 contacts →

Exact match

“Water Services and Technologies is a company specialized in hydrogeology and environmental services, which values technical quality, safety and excellence, always seeking to…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchBerkeley, CO, United StatesHQ recorded Nov 6, 202651-200114 contacts →

Exact match

“Stillwater Sciences is committed to creating a better world through science.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchBelgrade, SerbiaHQ recorded Nov 6, 2026201-50088 contacts →

Exact match

“Jaroslav Černi Water Institute is the leading scientific research organization in Serbia and the region in the field of water, which, besides the research, deals with design…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchAlbuquerque, TX, United StatesHQ recorded Nov 6, 202651-20088 contacts →

Exact match

“Daniel B.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchGirona, SpainHQ recorded Nov 6, 202651-20087 contacts →

Exact match

“We welcome you to the Catalan Institute for Water Research (ICRA-CERCA).”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchSan Diego, AZ, United StatesHQ recorded Nov 6, 202651-20086 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchPorto Alegre, BrazilHQ recorded Nov 6, 202651-20085 contacts →

Exact match

“For over 20 years, we have developed engineering solutions for the most complex environmental challenges in Brazil and around the world.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchDavis, CA, United StatesHQ recorded Nov 6, 202651-20081 contacts →

Exact match

“Larry Walker Associates (LWA) is a privately owned firm headquartered in Davis, California, with offices in Berkeley, Yreka, Santa Monica, Ventura, San Diego, and Seattle, WA.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchTrenton, NJ, United StatesHQ recorded Nov 6, 202651-20073 contacts →

Exact match

“Experience, Expertise and Excellence in Water Resources, Ecology, and Geotechnical Engineering.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchPortland, OR, United StatesHQ recorded Nov 6, 202651-20070 contacts →

Exact match

“GSI Water Solutions, Inc, is a specialized groundwater, environmental, and water resources consulting firm.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchUtrecht, NetherlandsHQ recorded Nov 6, 202651-20067 contacts →

Exact match

“Nelen & Schuurmans is a water management consultancy & IT company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchMontpelier, VT, United StatesHQ recorded Nov 6, 202651-20064 contacts →

Exact match

“Stone Environmental is a 100% employee-owned environmental science and engineering firm based in Montpelier, Vermont.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchBeaucouzé, FranceHQ recorded Nov 6, 202651-20063 contacts →

Exact match

“Aquascop est un bureau d´études indépendant spécialisé dans l´étude des milieux aquatiques, implantés sur 5 agences en France métropolitaine (Angers, Montpellier, Toulouse, Nancy…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchParis, FranceHQ recorded Nov 6, 202651-20057 contacts →

Exact match

“PROLOG INGENIERIE is a consulting engineering firm at the forefront of water management and remote-controlled systems, committed to enhancing water quality and environmental…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchParis, FranceHQ recorded Nov 6, 202611-5054 contacts →

Exact match

“BWI - which stands for Blue Water Intelligence, was established in June 2022 in Toulouse, France.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchProvidencia, ChileHQ recorded Nov 6, 202611-5051 contacts →

Exact match

“The administration and management of water is a fundamental factor for the development of countries.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchBrisbane City, AustraliaHQ recorded Nov 6, 202611-5047 contacts →

Exact match

“WRM Water & Environment is a world-class consultancy specialising in flooding, water resource engineering and water management.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchLima, PeruHQ recorded Nov 6, 202611-5044 contacts →

Exact match

“FloSolutions is an innovative hydrogeological consulting firm based in Peru and USA servicing the mining, water resources, energy and agricultural sectors.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchLeeuwarden, NetherlandsHQ recorded Nov 6, 202611-5044 contacts →

Exact match

“CEW is the leading innovative work and learning center for applied research on issues across the entire water cycle.”

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

Showing 25 of 837 hydrological modeling companies worldwide

See the full list, filter by size, metro and specialty, and access 4,449 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Hydrological modeling companies worldwide at a glance

As of Nov 6, 2026
37.9%Verified-email coverage
14.0Average contacts per company
1-10Median size (employees)
1.1%Largest-city concentration · Lima
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
565
11-50
211
51-200
38
201-500
10
501-1,000
1
1,001-5,000
3
5,001-10,000
1
10001+
1

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 hydrological modeling companies are linked below.
What qualifies
Company records worldwide whose business descriptions match “hydrological modeling companies” 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 4,449 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.

Hydrological modeling companies by location

8 lists · largest first

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

Countries

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 modeling companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many hydrological modeling companies are there worldwide?

RevenueBase identified 837 company matches for hydrological modeling companies 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?

Hazen And Sawyer tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most hydrological modeling companies?

The United States leads with 193 companies, followed by Australia (48) and France (42). Every hydrological modeling companies list by country and city is linked on this page.

Which city has the most hydrological modeling companies?

Lima leads with 9 company records, followed by Belo Horizonte (8) and Paris (8).

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 4,449 professional contacts with verified work emails tracked across these 837 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.