Company lists · Data refreshed September 2026

Top 25 Hydrology consulting firms based in France

Name: Hydrology consulting firms based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 3, 2026 223 companies tracked

RevenueBase identified 223 hydrology consulting firms headquartered in France as of September 2026 and tracks 2,458 professional contacts across them, including 996 with verified work emails and 41 with mobile numbers. Paris is the largest hub.

This list covers hydrology consulting firms headquartered in France, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 3, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 3, 2026 86% judged on-target in blind review

223Companies

2,458Contacts tracked

996Verified emails

41Mobile numbers

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest hydrology consulting firms based in France

Ranked by team size

Top 25 of 223 hydrology consulting firms based in France, ranked by team size, largest first. Data refreshed Sep 3, 2026. RevenueBase Smart Search rates how each company's information relates to hydrology consulting firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Altereo	Indirect evidence	Venelles, FranceHQ checked Sep 3, 2026	51-200	222 contacts →
	Indirect evidence “Awakening Environmental Smartness.” Source: RevenueBase Database · checked Sep 3, 2026
2	BRL Groupe	Indirect evidence	Nimes, FranceHQ checked Sep 3, 2026	501-1,000	143 contacts →
	Indirect evidence “A travers ses trois métiers principaux d’aménageur, d’ingénierie et d’exploitation de grands ouvrages hydrauliques, le Groupe BRL (5 sociétés (1), 101,79 M€ de CA, 804 salariés en…” Source: RevenueBase Database · checked Sep 3, 2026
3	Setec Énergie Environnement	Indirect evidence	Paris, FranceHQ checked Sep 3, 2026	51-200	141 contacts →
	Indirect evidence “Setec énergie environnement is a subsidiary of the setec group, one of France’s leading engineering firms (3 300 employees).” Source: RevenueBase Database · checked Sep 3, 2026
4	Artifex	Indirect evidence	Albi, FranceHQ checked Sep 3, 2026	51-200	124 contacts →
	Indirect evidence “ARTIFEX, une société de SOCOTEC est un bureau d’ingénierie et de conseil en environnement, créé en janvier 1983 et basé à Albi dans le Tarn.” Source: RevenueBase Database · checked Sep 3, 2026
5	Aquabio	Indirect evidence	Saint-germain Du Puch, FranceHQ checked Sep 3, 2026	51-200	82 contacts →
	Indirect evidence “AQUABIO est un bureau d'études indépendant dont le métier est de produire, valoriser, expertiser des données hydrobiologiques.” Source: RevenueBase Database · checked Sep 3, 2026
6	OGI	Indirect evidence	Montreuil, FranceHQ checked Sep 3, 2026	51-200	64 contacts →
	Indirect evidence “OGI est un bureau d'études spécialisé en aménagement d’espaces publics.” Source: RevenueBase Database · checked Sep 3, 2026
7	Hydretudes	Indirect evidence	Argonay, FranceHQ checked Sep 3, 2026	51-200	61 contacts →
	Indirect evidence “HYDRETUDES est un bureau d’études spécialisé dans l’ingénierie de l’eau, des risques naturels et de l’environnement.” Source: RevenueBase Database · checked Sep 3, 2026
8	Geolia	Indirect evidence	Morangis, FranceHQ checked Sep 3, 2026	51-200	58 contacts →
	Indirect evidence “Bureau d'Etudes Géotechniques, Hydrogéologie et Sites et Sols Pollués, Ingénierie des sols et fondations.” Source: RevenueBase Database · checked Sep 3, 2026
9	Prolog Ingenierie	Partial evidence	Paris, FranceHQ checked Sep 3, 2026	51-200	56 contacts →
	Partial evidence “PROLOG INGENIERIE is a consulting engineering firm at the forefront of water management and remote-controlled systems, committed to enhancing water quality and environmental…” Source: RevenueBase Database · checked Sep 3, 2026
10	Aquascop Sarl	Indirect evidence	Beaucouzé, FranceHQ checked Sep 3, 2026	51-200	53 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 3, 2026
11	SEIRI	Indirect evidence	Montpellier, FranceHQ checked Sep 3, 2026	11-50	43 contacts →
	Indirect evidence “Réaliser vos projets en toute SEIRInité!” Source: RevenueBase Database · checked Sep 3, 2026
12	Sepia Conseils	Indirect evidence	Paris, FranceHQ checked Sep 3, 2026	11-50	43 contacts →
	Indirect evidence “SEPIA Conseils accompagne depuis plus de 30 ans les acteurs de la gestion de l’eau et de l’aménagement du territoire vers des solutions durables, sobres et résilientes face aux…” Source: RevenueBase Database · checked Sep 3, 2026
13	CDES	Indirect evidence	Luzancy, FranceHQ checked Sep 3, 2026	51-200	41 contacts →
	Indirect evidence “CDES, c’est 100 experts engagés et passionnés, qui mettent chaque jour leur savoir-faire au service de la préservation et la valorisation des milieux aquatiques.” Source: RevenueBase Database · checked Sep 3, 2026
14	Réalités Environnement	Indirect evidence	Trevoux, FranceHQ checked Sep 3, 2026	11-50	34 contacts →
	Indirect evidence “REALITES Environnement est un bureau d'études indépendant qui intervient pour le compte de collectivités locales, d'industriels et de particuliers sur l'ensemble des études, des…” Source: RevenueBase Database · checked Sep 3, 2026
15	Osgapi	Indirect evidence	Nimes, FranceHQ checked Sep 3, 2026	11-50	23 contacts →
	Indirect evidence “OSGAPI est un bureau d'étude spécialisé dans la gestion du risque d'inondation assistant les collectivités territoriales mais aussi les particuliers.” Source: RevenueBase Database · checked Sep 3, 2026
16	Cpgf Horizon & Formation	Indirect evidence	Avon, FranceHQ checked Sep 3, 2026	11-50	22 contacts →
	Indirect evidence “CPGF HORIZON est un bureau d’ingénierie spécialisé en geo-sciences.” Source: RevenueBase Database · checked Sep 3, 2026
17	Hydrosphère	Indirect evidence	Saint-ouen-l'aumône, FranceHQ checked Sep 3, 2026	11-50	21 contacts →
	Indirect evidence “Créée en 1998, Hydrosphère est une société indépendante poursuivant l'activité du cabinet E.A.E Consultant fondé en 1993 par Pascal Michel, ingénieur écologue et hydrobiologiste.” Source: RevenueBase Database · checked Sep 3, 2026
18	Confluences IC	Partial evidence	Montry, FranceHQ checked Sep 3, 2026	11-50	20 contacts →
	Partial evidence “Confluences est un bureau d'études d’ingénieurs conseil qui hérite et prolonge un savoir-faire de plus de 50 ans dans les domaines de l’écologie et de l'hydrologie.” Source: RevenueBase Database · checked Sep 3, 2026
19	Urbanwater	Partial evidence	Paris, FranceHQ checked Sep 3, 2026	11-50	19 contacts →
	Partial evidence “Urbanwater, bureau d'études en hydrologie urbaine, développe le lien entre l’eau et les territoires urbains, à toutes les échelles.” Source: RevenueBase Database · checked Sep 3, 2026
20	Alise Environnement	Indirect evidence	Saint-Jacques-Sur-Darnetal, FranceHQ checked Sep 3, 2026	11-50	15 contacts →
	Indirect evidence “ALISE Environnement est un bureau d'études spécialisé dans le domaine de l'environnement.” Source: RevenueBase Database · checked Sep 3, 2026
21	EGEH	Indirect evidence	Limoges, FranceHQ checked Sep 3, 2026	11-50	15 contacts →
	Indirect evidence “From its creation in 1994, our company has been involved in those environmental areas where it can display the expertise of its team of geologists and hydrogeologists.” Source: RevenueBase Database · checked Sep 3, 2026
22	Antemys	Indirect evidence	Guereins Guereins, FranceHQ checked Sep 3, 2026	11-50	14 contacts →
	Indirect evidence “ANTEMYS, est reconnue en Rhône-Alpes et au niveau national pour sa compétence, son expérience et sa réactivité dans les domaines de la géotechnique, de l’hydraulique, de…” Source: RevenueBase Database · checked Sep 3, 2026
23	Agence Thierry Maytraud ATM	Partial evidence	Paris, FranceHQ checked Sep 3, 2026	11-50	12 contacts →
	Partial evidence “ATM est un bureau d’études spécialisé en hydrologie urbaine et en paysage, fondé par Thierry Maytraud en 2011.” Source: RevenueBase Database · checked Sep 3, 2026
24	BEPG	Indirect evidence	Villers Les Nancy, FranceHQ checked Sep 3, 2026	11-50	12 contacts →
	Indirect evidence “BEPG, BET indépendant, propose une prestation globale dans les domaines de l’eau et de l’environnement, situé à Nancy, Lorraine (54).” Source: RevenueBase Database · checked Sep 3, 2026
25	Acri-In	Indirect evidence	Biot, FranceHQ checked Sep 3, 2026	11-50	11 contacts →
	Indirect evidence “The company specializes in maritime, river and coastal engineering.” Source: RevenueBase Database · checked Sep 3, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: hydrology consulting firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names hydrology consulting firms.
Partial evidence: Its own public description names part of hydrology consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name hydrology consulting firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 223 hydrology consulting firms based in France

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 996 reachable decision-makers.

Free signup · no credit card

View the full list →

Hydrology consulting firms based in France at a glance

As of Sep 3, 2026

40.5%Verified-email coverage

1.7%Mobile-number coverage

11.0Average contacts per company

1-10Median size (employees)

7.6%Largest-city concentration · Paris

Sep 3, 2026Page data refreshed

Companies by employee count

1-10

156

11-50

51-200

201-500

501-1,000

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

00–30

8831–60

59061–90

31890–180

0180+

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among hydrology consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in France whose own description of what they do matches “hydrology consulting firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names hydrology consulting firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among hydrology consulting firms, and records with no verified work email. Companies headquartered outside France are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 996 across the full list. 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 3, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names hydrology consulting firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many hydrology consulting firms are there based in France?

RevenueBase identified 223 hydrology consulting firms headquartered in France as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Altereo, headquartered in Paris, tops this list with the largest team on record.

Which city has the most hydrology consulting firms?

Paris leads with 17 headquartered companies, followed by Toulouse (7) and Lyon (7).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 996 verified decision-maker contacts tracked across these 223 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 3, 2026.

Ready to reach these companies? Verified emails and direct dials for all 223 hydrology consulting firms based in France. Start with a free account, no credit card.

Download this list →

Related lists

Hydrology consulting firms by geography

Browse the directory

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 Smart Search, 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.