Company lists · Data refreshed September 2026
Top 25 Hydrological survey companies based in the United States
RevenueBase identified 390 company matches for hydrological survey companies associated with the United States as of September 2026 and tracks 19,929 professional contacts across them, including 9,272 with verified work emails. Portland is the largest hub.
This list covers company matches for hydrological survey companies associated with the United States, 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 20, 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.
The 25 largest hydrological survey companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 12,999 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 · Sep 20, 2026 · View company records in RevenueBase | |||||
| 2 | 2,100 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 · Sep 20, 2026 · View company records in RevenueBase | |||||
| 3 | 279 contacts → | ||||
Exact match “West Yost is a water-focused consulting engineering firm ranked by Fortune Magazine as one of the “Best Small and Medium Workplaces in Consulting and Professional Services” 2023 -…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 4 | 226 contacts → | ||||
Exact match “Water is a powerful and precious resource that deserves responsible management.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 5 | 176 contacts → | ||||
Exact match “Herrera Environmental Consultants is a leading engineering and scientific consulting firm focused on restoration, water, and sustainable development.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 6 | 167 contacts → | ||||
Exact match “EKI Environment & Water, Inc.(EKI) is an employee-owned company that has provided comprehensive water resources and engineering services to public and private sector clients for…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 7 | 126 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 · Sep 20, 2026 · View company records in RevenueBase | |||||
| 8 | 94 contacts → | ||||
Exact match “LRE Water is now Spheros Environmental.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 9 | 92 contacts → | ||||
Exact match “Daniel B.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 10 | 91 contacts → | ||||
Exact match “Vision: We are engineers and scientists who have a passion for sustainable, clean water.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 11 | 84 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 12 | 83 contacts → | ||||
Exact match “PACE is a civil engineering firm offering advanced water resource services.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 13 | 79 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 · Sep 20, 2026 · View company records in RevenueBase | |||||
| 14 | 71 contacts → | ||||
Exact match “Experience, Expertise and Excellence in Water Resources, Ecology, and Geotechnical Engineering.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 15 | 66 contacts → | ||||
Exact match “GSI Water Solutions, Inc, is a specialized groundwater, environmental, and water resources consulting firm.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 16 | 65 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 · Sep 20, 2026 · View company records in RevenueBase | |||||
| 17 | 62 contacts → | ||||
Exact match “Located in Sacramento, California, MBK Engineers (formerly Murray, Burns & Kienlen, Consulting Civil Engineers) has provided clients with complete engineering and consulting…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 18 | 55 contacts → | ||||
Exact match “Few companies can offer the vast range of technical expertise in guiding engineering decisions that AH brings to each and every project our clients entrust us with.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 19 | 50 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 20 | 42 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 21 | 42 contacts → | ||||
Exact match “Clear Creek Associates, a hydrogeological consulting company, was started in September to provide a very high level of expertise in groundwater science.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 22 | 41 contacts → | ||||
Exact match “GeoSystems Analysis, Inc.(GSA) has pioneered innovative solutions for industry and government since 1994.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 23 | 39 contacts → | ||||
Exact match “Coastal Resources, Inc.(CRI) is a certified women-owned small business with over 40 years of experience working with a wide variety of natural resources management issues.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 24 | 38 contacts → | ||||
Exact match “Provider of professional surveying services throughout the world safely, effectively, and economically.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 25 | 37 contacts → | ||||
Exact match “GKY is one of Virginia’s largest consulting groups dedicated to water resources and environmental sciences.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “hydrological survey companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 390 hydrological survey companies based in the United States
See the full list, filter by size, metro and specialty, and access 9,272 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Hydrological survey companies based in the United States at a glance
As of Sep 20, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 390 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 the United States whose business descriptions match “hydrological survey 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. 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 9,272 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 20, 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 survey companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many hydrological survey companies are there based in the United States?
RevenueBase identified 390 company matches for hydrological survey companies associated with the United States 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?
Tetra Tech tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most hydrological survey companies?
Portland leads with 10 company records, followed by Denver (8) and Houston (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 9,272 professional contacts with verified work emails tracked across these 390 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 20, 2026.
Ready to reach these companies? Verified emails and direct dials for all 390 hydrological survey companies based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Hydrological survey companies by geography
- Hydrological survey companies based in Australia
- Hydrological survey companies based in Brazil
- Hydrological survey companies based in Canada
- Hydrological survey companies based in Chile
- Hydrological survey companies based in France
- Hydrological survey companies based in Germany
- Hydrological survey companies based in India
- Hydrological survey companies based in Italy
- Hydrological survey companies based in the Netherlands
- Hydrological survey companies based in South Africa
- Hydrological survey companies based in Spain
- Hydrological survey companies based in Switzerland
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Hydrological survey companies based in Australia
- Hydrological survey companies based in Brazil
- Hydrological survey companies based in Canada
- Hydrological survey companies based in Chile
- Hydrological survey companies based in France
- Hydrological survey companies based in Germany
Company intelligence · public preview
Top 25 hydrological survey companies based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 390 matching company records for hydrological survey companies based in the United States, with 19,929 tracked contacts and 9,272 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 20, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 hydrological survey companies based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Tetra Techtetratech.comHQ: Pasadena, CA, United StatesReported employees: 10001+ | Pasadena, CA, United States | 10001+ | Exact match | 12,999 contacts → |
“Tetra Tech is the leader in water, environment and sustainable infrastructure, providing high-end technical and engineering services for projects worldwide.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Hazen And Sawyerhazenandsawyer.comHQ: New York, NY, United StatesReported employees: 1,001-5,000 | New York, NY, United States | 1,001-5,000 | Exact match | 2,100 contacts → |
“As Hazen marks 75 years, we celebrate a legacy of absolute commitment to our clients while delivering the best technical work available anywhere.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  West Yostwestyost.comHQ: Davis, CA, United StatesReported employees: 201-500 | Davis, CA, United States | 201-500 | Exact match | 279 contacts → |
“West Yost is a water-focused consulting engineering firm ranked by Fortune Magazine as one of the “Best Small and Medium Workplaces in Consulting and Professional Services” 2023 -…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Mcmillenmcmillen.comHQ: Boise, ID, United StatesReported employees: 201-500 | Boise, ID, United States | 201-500 | Exact match | 226 contacts → |
“Water is a powerful and precious resource that deserves responsible management.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Herrera Environmental Consultantsherrerainc.comHQ: Seattle, WA, United StatesReported employees: 51-200 | Seattle, WA, United States | 51-200 | Exact match | 176 contacts → |
“Herrera Environmental Consultants is a leading engineering and scientific consulting firm focused on restoration, water, and sustainable development.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | EKI Environment & Water, INCekiconsult.com HQ: Daly City, CA, United StatesReported employees: 51-200 | Daly City, CA, United States | 51-200 | Exact match | 167 contacts → |
“EKI Environment & Water, Inc.(EKI) is an employee-owned company that has provided comprehensive water resources and engineering services to public and private sector clients for…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Montgomery & Associateselmontgomery.comHQ: Tucson, AZ, United StatesReported employees: 51-200 | Tucson, AZ, United States | 51-200 | Exact match | 126 contacts → |
“M&A is a water resource consulting firm that partners with clients to address their evolving water resource challenges.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  LRE Water A Spheros Environmental Companylrewater.comHQ: Denver, CO, United StatesReported employees: 51-200 | Denver, CO, United States | 51-200 | Exact match | 94 contacts → |
“LRE Water is now Spheros Environmental.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Daniel B. Stephens & Associates, INCdbstephens.com HQ: Albuquerque, NM, United StatesReported employees: 51-200 | Albuquerque, NM, United States | 51-200 | Exact match | 92 contacts → |
“Daniel B.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Limnotechlimno.com HQ: Ann Arbor, MI, United StatesReported employees: 51-200 | Ann Arbor, MI, United States | 51-200 | Exact match | 91 contacts → |
“Vision: We are engineers and scientists who have a passion for sustainable, clean water.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  West Consultants, INCwestconsultants.comHQ: San Diego, CA, United StatesReported employees: 51-200 | San Diego, CA, United States | 51-200 | Exact match | 84 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 12 | Pace Advanced Water Engineeringpacewater.com HQ: Fountain Valley, CA, United StatesReported employees: 51-200 | Fountain Valley, CA, United States | 51-200 | Exact match | 83 contacts → |
“PACE is a civil engineering firm offering advanced water resource services.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Larry Walker Associateslwa.comHQ: Davis, CA, United StatesReported employees: 51-200 | Davis, CA, United States | 51-200 | Exact match | 79 contacts → |
“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 description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Princeton Hydroprincetonhydro.com HQ: Trenton, NJ, United StatesReported employees: 51-200 | Trenton, NJ, United States | 51-200 | Exact match | 71 contacts → |
“Experience, Expertise and Excellence in Water Resources, Ecology, and Geotechnical Engineering.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  GSI Water Solutions, INCgsiws.comHQ: Portland, OR, United StatesReported employees: 51-200 | Portland, OR, United States | 51-200 | Exact match | 66 contacts → |
“GSI Water Solutions, Inc, is a specialized groundwater, environmental, and water resources consulting firm.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Stone Environmentalstone-env.comHQ: Montpelier, VT, United StatesReported employees: 51-200 | Montpelier, VT, United States | 51-200 | Exact match | 65 contacts → |
“Stone Environmental is a 100% employee-owned environmental science and engineering firm based in Montpelier, Vermont.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  MBK Engineersmbkengineers.comHQ: Sacramento, CA, United StatesReported employees: 51-200 | Sacramento, CA, United States | 51-200 | Exact match | 62 contacts → |
“Located in Sacramento, California, MBK Engineers (formerly Murray, Burns & Kienlen, Consulting Civil Engineers) has provided clients with complete engineering and consulting…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  AH Engineering Consultantsahenv.comHQ: Newport News, VA, United StatesReported employees: 11-50 | Newport News, VA, United States | 11-50 | Exact match | 55 contacts → |
“Few companies can offer the vast range of technical expertise in guiding engineering decisions that AH brings to each and every project our clients entrust us with.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Gomez And Sullivan Engineers, D.P.Cgomezandsullivan.com HQ: Utica, NY, United StatesReported employees: 11-50 | Utica, NY, United States | 11-50 | Exact match | 50 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 20 | Balance Hydrologics, INCbalancehydro.com HQ: Berkeley, CA, United StatesReported employees: 11-50 | Berkeley, CA, United States | 11-50 | Exact match | 42 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 21 | Clear Creek Associatesclearcreekassociates.com HQ: Scottsdale, AZ, United StatesReported employees: 11-50 | Scottsdale, AZ, United States | 11-50 | Exact match | 42 contacts → |
“Clear Creek Associates, a hydrogeological consulting company, was started in September to provide a very high level of expertise in groundwater science.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Geosystems Analysisgsanalysis.com HQ: Tucson, AZ, United StatesReported employees: 11-50 | Tucson, AZ, United States | 11-50 | Exact match | 41 contacts → |
“GeoSystems Analysis, Inc.(GSA) has pioneered innovative solutions for industry and government since 1994.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Coastal Resources, INCcoastal-resources.net HQ: Annapolis, MD, United StatesReported employees: 11-50 | Annapolis, MD, United States | 11-50 | Exact match | 39 contacts → |
“Coastal Resources, Inc.(CRI) is a certified women-owned small business with over 40 years of experience working with a wide variety of natural resources management issues.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Terrasond - Utecacteon.comHQ: Palmer, AK, United StatesReported employees: 51-200 | Palmer, AK, United States | 51-200 | Exact match | 38 contacts → |
“Provider of professional surveying services throughout the world safely, effectively, and economically.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | GKYgky.com HQ: Chantilly, VA, United StatesReported employees: 11-50 | Chantilly, VA, United States | 11-50 | Exact match | 37 contacts → |
“GKY is one of Virginia’s largest consulting groups dedicated to water resources and environmental sciences.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 390 company matches
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Hydrological survey companies: dataset insights
September 20, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
389 records in the displayed employee bands.
1 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 390 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 20, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for hydrological survey companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many hydrological survey companies did RevenueBase find based in the United States?
The saved snapshot records 390 matching company records, 19,929 tracked contacts and 9,272 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 20, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Hydrological survey companies by geography
- Hydrological survey companies based in Australia
- Hydrological survey companies based in Brazil
- Hydrological survey companies based in Canada
- Hydrological survey companies based in Chile
- Hydrological survey companies based in France
- Hydrological survey companies based in Germany
- Hydrological survey companies based in India
- Hydrological survey companies based in Italy
- Hydrological survey companies based in the Netherlands
- Hydrological survey companies based in South Africa
- Hydrological survey companies based in Spain
- Hydrological survey companies based in Switzerland
Cite this list
RevenueBase Data Team. Top 25 hydrological survey companies based in the United States. Snapshot: September 20, 2026. https://revenuebase.ai/companies/hydrological-survey-companies/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Hydrological survey companies based in Australia
- Hydrological survey companies based in Brazil
- Hydrological survey companies based in Canada
- Hydrological survey companies based in Chile
- Hydrological survey companies based in France
- Hydrological survey companies based in Germany
Company intelligence · public preview
Top 25 hydrological survey companies based in the United States
RevenueBase records 390 matching company records for hydrological survey companies based in the United States, with 19,929 tracked contacts and 9,272 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 20, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 hydrological survey companies based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Tetra Techtetratech.com HQ: Pasadena, CA, United StatesReported employees: 10001+ | Pasadena, CA, United States | 10001+ | Exact match | 12,999 contacts → |
“Tetra Tech is the leader in water, environment and sustainable infrastructure, providing high-end technical and engineering services for projects worldwide.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Hazen And Sawyerhazenandsawyer.com HQ: New York, NY, United StatesReported employees: 1,001-5,000 | New York, NY, United States | 1,001-5,000 | Exact match | 2,100 contacts → |
“As Hazen marks 75 years, we celebrate a legacy of absolute commitment to our clients while delivering the best technical work available anywhere.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | West Yostwestyost.com HQ: Davis, CA, United StatesReported employees: 201-500 | Davis, CA, United States | 201-500 | Exact match | 279 contacts → |
“West Yost is a water-focused consulting engineering firm ranked by Fortune Magazine as one of the “Best Small and Medium Workplaces in Consulting and Professional Services” 2023 -…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Mcmillenmcmillen.com HQ: Boise, ID, United StatesReported employees: 201-500 | Boise, ID, United States | 201-500 | Exact match | 226 contacts → |
“Water is a powerful and precious resource that deserves responsible management.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Herrera Environmental Consultantsherrerainc.com HQ: Seattle, WA, United StatesReported employees: 51-200 | Seattle, WA, United States | 51-200 | Exact match | 176 contacts → |
“Herrera Environmental Consultants is a leading engineering and scientific consulting firm focused on restoration, water, and sustainable development.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | EKI Environment & Water, INCekiconsult.com HQ: Daly City, CA, United StatesReported employees: 51-200 | Daly City, CA, United States | 51-200 | Exact match | 167 contacts → |
“EKI Environment & Water, Inc.(EKI) is an employee-owned company that has provided comprehensive water resources and engineering services to public and private sector clients for…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Montgomery & Associateselmontgomery.com HQ: Tucson, AZ, United StatesReported employees: 51-200 | Tucson, AZ, United States | 51-200 | Exact match | 126 contacts → |
“M&A is a water resource consulting firm that partners with clients to address their evolving water resource challenges.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | LRE Water A Spheros Environmental Companylrewater.com HQ: Denver, CO, United StatesReported employees: 51-200 | Denver, CO, United States | 51-200 | Exact match | 94 contacts → |
“LRE Water is now Spheros Environmental.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Daniel B. Stephens & Associates, INCdbstephens.com HQ: Albuquerque, NM, United StatesReported employees: 51-200 | Albuquerque, NM, United States | 51-200 | Exact match | 92 contacts → |
“Daniel B.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Limnotechlimno.com HQ: Ann Arbor, MI, United StatesReported employees: 51-200 | Ann Arbor, MI, United States | 51-200 | Exact match | 91 contacts → |
“Vision: We are engineers and scientists who have a passion for sustainable, clean water.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | West Consultants, INCwestconsultants.com HQ: San Diego, CA, United StatesReported employees: 51-200 | San Diego, CA, United States | 51-200 | Exact match | 84 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 12 | Pace Advanced Water Engineeringpacewater.com HQ: Fountain Valley, CA, United StatesReported employees: 51-200 | Fountain Valley, CA, United States | 51-200 | Exact match | 83 contacts → |
“PACE is a civil engineering firm offering advanced water resource services.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Larry Walker Associateslwa.com HQ: Davis, CA, United StatesReported employees: 51-200 | Davis, CA, United States | 51-200 | Exact match | 79 contacts → |
“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 description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Princeton Hydroprincetonhydro.com HQ: Trenton, NJ, United StatesReported employees: 51-200 | Trenton, NJ, United States | 51-200 | Exact match | 71 contacts → |
“Experience, Expertise and Excellence in Water Resources, Ecology, and Geotechnical Engineering.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | GSI Water Solutions, INCgsiws.com HQ: Portland, OR, United StatesReported employees: 51-200 | Portland, OR, United States | 51-200 | Exact match | 66 contacts → |
“GSI Water Solutions, Inc, is a specialized groundwater, environmental, and water resources consulting firm.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Stone Environmentalstone-env.com HQ: Montpelier, VT, United StatesReported employees: 51-200 | Montpelier, VT, United States | 51-200 | Exact match | 65 contacts → |
“Stone Environmental is a 100% employee-owned environmental science and engineering firm based in Montpelier, Vermont.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | MBK Engineersmbkengineers.com HQ: Sacramento, CA, United StatesReported employees: 51-200 | Sacramento, CA, United States | 51-200 | Exact match | 62 contacts → |
“Located in Sacramento, California, MBK Engineers (formerly Murray, Burns & Kienlen, Consulting Civil Engineers) has provided clients with complete engineering and consulting…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | AH Engineering Consultantsahenv.com HQ: Newport News, VA, United StatesReported employees: 11-50 | Newport News, VA, United States | 11-50 | Exact match | 55 contacts → |
“Few companies can offer the vast range of technical expertise in guiding engineering decisions that AH brings to each and every project our clients entrust us with.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Gomez And Sullivan Engineers, D.P.Cgomezandsullivan.com HQ: Utica, NY, United StatesReported employees: 11-50 | Utica, NY, United States | 11-50 | Exact match | 50 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 20 | Balance Hydrologics, INCbalancehydro.com HQ: Berkeley, CA, United StatesReported employees: 11-50 | Berkeley, CA, United States | 11-50 | Exact match | 42 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 21 | Clear Creek Associatesclearcreekassociates.com HQ: Scottsdale, AZ, United StatesReported employees: 11-50 | Scottsdale, AZ, United States | 11-50 | Exact match | 42 contacts → |
“Clear Creek Associates, a hydrogeological consulting company, was started in September to provide a very high level of expertise in groundwater science.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Geosystems Analysisgsanalysis.com HQ: Tucson, AZ, United StatesReported employees: 11-50 | Tucson, AZ, United States | 11-50 | Exact match | 41 contacts → |
“GeoSystems Analysis, Inc.(GSA) has pioneered innovative solutions for industry and government since 1994.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Coastal Resources, INCcoastal-resources.net HQ: Annapolis, MD, United StatesReported employees: 11-50 | Annapolis, MD, United States | 11-50 | Exact match | 39 contacts → |
“Coastal Resources, Inc.(CRI) is a certified women-owned small business with over 40 years of experience working with a wide variety of natural resources management issues.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Terrasond - Utecacteon.com HQ: Palmer, AK, United StatesReported employees: 51-200 | Palmer, AK, United States | 51-200 | Exact match | 38 contacts → |
“Provider of professional surveying services throughout the world safely, effectively, and economically.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | GKYgky.com HQ: Chantilly, VA, United StatesReported employees: 11-50 | Chantilly, VA, United States | 11-50 | Exact match | 37 contacts → |
“GKY is one of Virginia’s largest consulting groups dedicated to water resources and environmental sciences.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 390 company matches
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Hydrological survey companies: dataset insights
September 20, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
389 records in the displayed employee bands.
1 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 390 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 20, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for hydrological survey companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many hydrological survey companies did RevenueBase find based in the United States?
The saved snapshot records 390 matching company records, 19,929 tracked contacts and 9,272 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 20, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Hydrological survey companies by geography
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Cite this list
RevenueBase Data Team. Top 25 hydrological survey companies based in the United States. Snapshot: September 20, 2026. https://revenuebase.ai/companies/hydrological-survey-companies/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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