Company lists · Data refreshed November 2026

Top 25 Watershed protection nonprofits worldwide

RevenueBase identified 1,108 company matches for watershed protection nonprofits worldwide as of November 2026 and tracks 13,274 professional contacts across them, including 5,254 with verified work emails. The United States is the largest market and Portland the largest hub.

This list covers company matches for watershed protection nonprofits 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 watershed protection nonprofits 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
1,108Companies
13,274Contacts tracked
5,254Verified emails
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The 25 largest watershed protection nonprofits worldwide

Ranked by team size
Top 25 of 1,108 company matches for watershed protection nonprofits 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 matchAnand, IndiaHQ recorded Nov 6, 2026201-500465 contacts →

Exact match

“We work towards the ecological restoration and conservation of land and water resources, in conserving the uplands and other eco-fragile, degraded and marginalised zones of the…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchWashington, DC, United StatesHQ recorded Nov 6, 202651-200387 contacts →

Exact match

“Since our founding during the campaign to pass the landmark Clean Water Act in 1972, Clean Water Action has worked to win strong health and environmental protections by bringing…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchAnnapolis, MD, United StatesHQ recorded Nov 6, 202651-200317 contacts →

Exact match

“The Chesapeake Bay Foundation (CBF) fights for bold and creative solutions to the pollution that plagues the Bay and its tributaries.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchJakarta Selatan, IndonesiaHQ recorded Nov 6, 202651-200283 contacts →

Exact match

“Yayasan Konservasi Alam Nusantara (YKAN) adalah organisasi nirlaba berbasis ilmiah yang hadir di Indonesia sejak 2014.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchGloucester, MA, United StatesHQ recorded Nov 6, 202651-200237 contacts →

Exact match

“Seaside Sustainability is a nationally recognized, award-winning 501(c)3 charitable organization dedicated to community engagement, education and environmental conservation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchSt. Paul, IA, United StatesHQ recorded Nov 6, 2026201-500218 contacts →

Exact match

“At Conservation Corps Minnesota & Iowa, youth and young adults grow as environmental stewards and leaders while giving back to the community through meaningful service.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchMissoula, MT, United StatesHQ recorded Nov 6, 202651-200186 contacts →

Exact match

“The NFF works with communities and organizations to conserve and enhance the watersheds, wildlife habitat and wild places across our 193-million-acre National Forest System.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchWashington, DC, United StatesHQ recorded Nov 6, 202651-200154 contacts →

Exact match

“American Rivers protects wild rivers, restores damaged rivers, and conserves clean water for people and nature.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchSanta Monica, CA, United StatesHQ recorded Nov 6, 202611-50138 contacts →

Exact match

“Our Mission: Heal the Bay is an environmental nonprofit making LA’s coastal waters and watersheds, including Santa Monica Bay, safe, healthy and clean.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchHamilton, ON, CanadaHQ recorded Nov 6, 202651-200127 contacts →

Exact match

“Hamilton Conservation Authority, located at the western end of Lake Ontario, is the area’s largest environmental management agency, and is dedicated to the conservation and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchLisbon, PortugalHQ recorded Nov 6, 20261,001-5,000106 contacts →

Exact match

“At Saur, we mobilize ourselves daily to protect and preserve water across all territories.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchDouai, FranceHQ recorded Nov 6, 202651-20096 contacts →

Exact match

“L'Agence de l'Eau Artois-Picardie agit pour reconquérir la qualité de l’eau et des milieux aquatiques.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchKansas City, MO, United StatesHQ recorded Nov 6, 202611-5095 contacts →

Exact match

“Bridging The Gap brings people together to protect and restore the web of life on Earth and foster inclusive, thriving communities through environmental education, innovation, and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchRichmond, CA, United StatesHQ recorded Nov 6, 202651-20090 contacts →

Exact match

“The San Francisco Estuary Institute (SFEI-ASC) is one of California’s premier environmental science organizations.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchChico, CA, United StatesHQ recorded Nov 6, 202651-20086 contacts →

Exact match

“River Partners brings life back to rivers.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchNew Haven, NY, United StatesHQ recorded Nov 6, 202611-5082 contacts →

Exact match

“Save the Sound leads environmental action across Connecticut, Westchester, NYC, and Long Island.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchStoke Climsland, United KingdomHQ recorded Nov 6, 202651-20076 contacts →

Exact match

“Rivers shape our landscapes and provide the foundations for our cities, towns and countryside.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchAnnapolis, DC, United StatesHQ recorded Nov 6, 202611-5076 contacts →

Exact match

“For the last 50 years, the Alliance has worked to bring together communities, companies, and conservationists to improve the lands and waters of the Chesapeake Bay.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchSan Francisco, CA, United StatesHQ recorded Nov 6, 202651-20075 contacts →

Exact match

“California Trout is a non-profit conservation organization that strives to solve complex resource issues while balancing the needs of wild fish and people through science-based…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchSan Jose, CA, United StatesHQ recorded Nov 6, 202611-5072 contacts →

Exact match

“For 25 years, the Santa Valley Open Space Authority – in partnership with community members, nonprofits, and other agencies – has contributed to the quality of life in our…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchFort Lauderdale, FL, United StatesHQ recorded Nov 6, 202651-20071 contacts →

Exact match

“Save the Water™ (STW™) is a U.S-based nonprofit organization dedicated to water quality research.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchZürich, SwitzerlandHQ recorded Nov 6, 202651-20070 contacts →

Exact match

“Seit 25 Jahren setzen wir uns für eine gesunde Umwelt, die nachhaltige Nutzung der Ressourcen sowie vielfältige und artenreiche Lebensräume ein.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchBallina, AustraliaHQ recorded Nov 6, 202611-5068 contacts →

Exact match

“OzFish Unlimited is a not-for-profit charity dedicated to helping the millions of Aussie recreational fishers take control of the health of their rivers, lakes and estuaries and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchOssining, NY, United StatesHQ recorded Nov 6, 202611-5065 contacts →

Exact match

“Riverkeeper is a member-supported watchdog organization dedicated to defending the Hudson River and its tributaries and protecting the drinking water supply of more than 9.5…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchColumbia, IL, United StatesHQ recorded Nov 6, 202651-20064 contacts →

Exact match

“Naturion is a market leader in the wetland and stream mitigation industry providing high-quality ecological restoration for degraded ecosystems.”

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

Showing 25 of 1,108 watershed protection nonprofits worldwide

See the full list, filter by size, metro and specialty, and access 5,254 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Watershed protection nonprofits worldwide at a glance

As of Nov 6, 2026
39.6%Verified-email coverage
12.0Average contacts per company
1-10Median size (employees)
1.5%Largest-city concentration · Portland
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
758
11-50
264
51-200
59
201-500
9
501-1,000
2
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 watershed protection nonprofits are linked below.
What qualifies
Company records worldwide whose business descriptions match “watershed protection nonprofits” 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 5,254 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.

Watershed protection nonprofits by location

2 lists · largest first

Every Watershed protection nonprofits 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 “watershed protection nonprofits”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many watershed protection nonprofits are there worldwide?

RevenueBase identified 1,108 company matches for watershed protection nonprofits 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?

Foundation For Ecological Security FES tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most watershed protection nonprofits?

The United States leads with 752 companies, followed by Canada (92). Every watershed protection nonprofits list by country and city is linked on this page.

Which city has the most watershed protection nonprofits?

Portland leads with 17 company records, followed by Washington (8) and Denver (7).

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 5,254 professional contacts with verified work emails tracked across these 1,108 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.