Company lists · Data refreshed November 2026

Top 25 Hydrology research institutes based in the United States

RevenueBase identified 145 company matches for hydrology research institutes associated with the United States as of November 2026 and tracks 2,219 professional contacts across them, including 898 with verified work emails. Sacramento is the largest hub.

This list covers company matches for hydrology research institutes 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 November 6, 2026.

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

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
145Companies
2,219Contacts tracked
898Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest hydrology research institutes based in the United States

Ranked by team size
Top 25 of 145 company matches for hydrology research institutes based in the United States, 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 matchDenver, DC, United StatesHQ recorded Nov 6, 202651-200343 contacts →

Exact match

“Established in 1881, the American Water Works Association is the largest nonprofit, scientific and educational association dedicated to managing and treating water, the world’s…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchAnn Arbor, MN, United StatesHQ recorded Nov 6, 202651-20099 contacts →

Exact match

“Vision: We are engineers and scientists who have a passion for sustainable, clean water.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchDenver, VA, United StatesHQ recorded Nov 6, 202651-20089 contacts →

Exact match

“The Water Research Foundation (WRF) is the leading research organization advancing the science of all water to meet the evolving needs of its subscribers and the water sector.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchAvondale, PA, United StatesHQ recorded Nov 6, 202651-20084 contacts →

Exact match

“Mission: To advance knowledge and stewardship of freshwater systems through global research, education, and restoration.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact 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
6Exact matchCosta Mesa, CA, United StatesHQ recorded Nov 6, 202611-5074 contacts →

Exact match

“The Southern California Coastal Water Research Project (SCCWRP) is a public R&D agency that develops and applies next-generation science to improve management of aquatic systems…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchPortland, CA, United StatesHQ recorded Nov 6, 202651-20063 contacts →

Exact match

“The Freshwater Trust is focused on using insight to solve problems at the intersection of water and the economy.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchTraverse City, MI, United StatesHQ recorded Nov 6, 202651-20045 contacts →

Exact match

“Contracted environmental services focused on freshwater resources.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchBerkeley, CA, United StatesHQ recorded Nov 6, 202611-5041 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchChicago, IL, United StatesHQ recorded Nov 6, 2026n/a37 contacts →

Exact match

“The American Water Resources Association is a non-profit professional association dedicated to the advancement of water resources management, research, and education.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchProvo, UT, United StatesHQ recorded Nov 6, 202611-5033 contacts →

Exact match

“What We Do: Aquaveo creates state-of-the-art environmental water modeling software.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchFountain Valley, CA, United StatesHQ recorded Nov 6, 2026n/a31 contacts →

Exact match

“The National Water Research Institute (NWRI) is a science-oriented 501c3 nonprofit that has sponsored projects and programs since 1991 to improve water quality, protect public…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchSt. Paul, MN, United StatesHQ recorded Nov 6, 202611-5027 contacts →

Exact match

“Capitol Region Watershed District (CRWD) is dedicated to protecting, managing and improving the water resources of the District, which includes parts of Falcon Heights…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchDavis, CA, United StatesHQ recorded Nov 6, 202611-5027 contacts →

Exact match

“Since 1993, Davids Engineering, Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchArlington, MA, United StatesHQ recorded Nov 6, 202611-5023 contacts →

Exact match

“CUAHSI's mission is to empower the water community and advance science through collaboration, infrastructure, and education.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchTukwila, United StatesHQ recorded Nov 6, 202651-20023 contacts →

Exact match

“nhc is an international consulting firm of engineers and scientists providing professional services for the development, management and protection of water resources.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchSyracuse, NY, United StatesHQ recorded Nov 6, 202611-5023 contacts →

Exact match

“UFI is a not-for-profit organization dedicated to the advancement of freshwater research and improvement of water quality through applied research, monitoring programs, and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchEdmonds, WA, United StatesHQ recorded Nov 6, 202611-5023 contacts →

Exact match

“DSI understands the ever-increasing stresses on our planet’s water resources and has the technical knowledge and comprehensive vision to help our clients minimize the impacts of…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchAlexandria, VA, United StatesHQ recorded Nov 6, 20261-1021 contacts →

Exact match

“Research on water management in agriculture, irrigation, groundwater, river basins, wetlands, ecosystems, food security, wastewater and climate change.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchManchester, ME, United StatesHQ recorded Nov 6, 20261-1016 contacts →

Exact match

“When it comes to water we often overlook the pure and simple fact that without it, the human race would not exist.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchSan Diego, CA, United StatesHQ recorded Nov 6, 202611-5012 contacts →

Exact match

“Founded in 1993, the Hydrologic Research Center (HRC) is the nation’s leading source of expertise on sustainable solutions to global water issues.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchBillings, MT, United StatesHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“Welcome to HydroSolutions Integrity.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchKnoxville, LA, United StatesHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“Clean water sustains our world and healthy ecosystems enrich our lives.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchSilver Spring, MD, United StatesHQ recorded Nov 6, 20261-109 contacts →

Exact match

“Deltares USA, Inc is a US not-for-profit organization closely aligned with Stichting Deltares in the Netherlands.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchNewtown, CT, United StatesHQ recorded Nov 6, 202611-509 contacts →

Exact match

“e4sciences produces scientific solutions for engineers and decision-makers who are responsible for:* Ports & waterways * Utilities & infrastructure * Energy & mining * Water &…”

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

Showing 25 of 145 hydrology research institutes based in the United States

See the full list, filter by size, metro and specialty, and access 898 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Hydrology research institutes based in the United States at a glance

As of Nov 6, 2026
40.5%Verified-email coverage
15.3Average contacts per company
1-10Median size (employees)
3.4%Largest-city concentration · Sacramento
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
79
11-50
42
51-200
18
201-500
5
1,001-5,000
1

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 145 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 “hydrology research institutes” 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 898 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.

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

How many hydrology research institutes are there based in the United States?

RevenueBase identified 145 company matches for hydrology research institutes associated with the United States 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?

American Water Works Association tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most hydrology research institutes?

Sacramento leads with 5 company records, followed by Alexandria (4) and Davis (4).

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 898 professional contacts with verified work emails tracked across these 145 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.

Ready to reach these companies? Verified emails and direct dials for all 145 hydrology research institutes based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

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.