Company lists · Data refreshed November 2026

Top 25 Stream restoration nonprofits based in the United States

RevenueBase identified 491 company matches for stream restoration nonprofits associated with the United States as of November 2026 and tracks 5,002 professional contacts across them, including 2,255 with verified work emails. Portland is the largest hub.

This list covers company matches for stream restoration nonprofits 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
491Companies
5,002Contacts tracked
2,255Verified emails
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The 25 largest stream restoration nonprofits based in the United States

Ranked by team size
Top 25 of 491 company matches for stream restoration nonprofits 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 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
2Exact 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
3Exact 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
4Exact matchMillersville, MD, United StatesHQ recorded Nov 6, 2026201-500116 contacts →

Exact match

“Our mission is to be the keystone species in the restoration of the Chesapeake Bay.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact 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
6Exact 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
7Exact 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
8Exact 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
9Exact matchSeattle, WA, United StatesHQ recorded Nov 6, 202651-20051 contacts →

Exact match

“Natural Systems Design (NSD) is a team of scientists, engineers, and planners who are also farmers, fishermen and impassioned river people who have organized our lives to have a…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchPennington, NJ, United StatesHQ recorded Nov 6, 202611-5048 contacts →

Exact match

“Keeping water clean, safe and healthy is the heart of our mission.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchTucson, AZ, United StatesHQ recorded Nov 6, 202651-20047 contacts →

Exact match

“The Sonoran Institute’s mission is to connect people and communities with the natural resources that nourish and sustain them.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchNorfolk, VA, United StatesHQ recorded Nov 6, 202611-5046 contacts →

Exact match

“The Elizabeth River Project is a growing non-profit organization leading the effort to restore the health of our historic urban river, while affirming her value to our region’s…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchPalo Alto, CA, United StatesHQ recorded Nov 6, 202611-5046 contacts →

Exact match

“Grassroots Ecology leverages the power of community volunteers to create healthy ecosystems across Silicon Valley, from the foothills to San Francisco Bay.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchSchaumburg, WI, United StatesHQ recorded Nov 6, 202651-20043 contacts →

Exact match

“Tallgrass Restoration works in partnership with public, private, and corporate clients committed to restoring their landscapes, to create ecologically sustainable natural…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchNaperville, IL, United StatesHQ recorded Nov 6, 202611-5042 contacts →

Exact match

“We improve the health of our communities by preserving and restoring natural areas and open space, protecting rivers and watersheds, and promoting stewardship of our environment.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchNewport, NC, United StatesHQ recorded Nov 6, 202611-5042 contacts →

Exact match

“The North Carolina Coastal Federation is a nonprofit organization dedicated to protecting and restoring the coast of North Carolina through programs that: keep the public informed…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchCorvallis, OR, United StatesHQ recorded Nov 6, 202651-20040 contacts →

Exact match

“The Institute for Applied Ecology is a non-profit 501(c)(3) organization founded in with a mission to conserve native species and habitats.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchAsheville, NC, United StatesHQ recorded Nov 6, 202611-5040 contacts →

Exact match

“MountainTrue champions healthy forests, clean waters, and resilient communities in the Southern Blue Ridge.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchEmmaus, PA, United StatesHQ recorded Nov 6, 202611-5039 contacts →

Exact match

“Our Mission: Protect and restore critical natural areas and waterways and educate the community to create a legacy of a healthy, sustainable environment for future generations.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchSt. Paul, MN, United StatesHQ recorded Nov 6, 202611-5036 contacts →

Exact match

“Great River Greening inspires, engages and leads local communities in conserving and caring for the land and water that enrich our lives.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchHouston, TX, United StatesHQ recorded Nov 6, 202611-5034 contacts →

Exact match

“Buffalo Bayou Partnership creates and stewards welcoming parks, trails, and unique spaces, connecting Houstonians with our city's most significant natural waterway.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchLongmont, CO, United StatesHQ recorded Nov 6, 202611-5034 contacts →

Exact match

“Wildlands Restoration Volunteers is a non-profit organization that provides an opportunity for people to come together, learn about their natural environment, and take direct…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchCoral Gables, FL, United StatesHQ recorded Nov 6, 202611-5034 contacts →

Exact match

“Protect the water you love.#MiamiWaterkeeper Miami Waterkeeper protects South Florida’s waters by advocating for resilient solutions grounded in science, rooted in nature, and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchSolana Beach, CA, United StatesHQ recorded Nov 6, 202611-5034 contacts →

Exact match

“Nature Collective’s mission is to drive a passion for nature, for all.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchGreenfield, MA, United StatesHQ recorded Nov 6, 2026n/a33 contacts →

Exact match

“Since 1952, CRC has been the voice for the Connecticut River watershed, from source to sea.”

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

Showing 25 of 491 stream restoration nonprofits based in the United States

See the full list, filter by size, metro and specialty, and access 2,255 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Stream restoration nonprofits based in the United States at a glance

As of Nov 6, 2026
45.1%Verified-email coverage
10.2Average contacts per company
1-10Median size (employees)
2.9%Largest-city concentration · Portland
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
353
11-50
111
51-200
19
201-500
4
1,001-5,000
1
10001+
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 491 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 “stream restoration 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. 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 2,255 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 “stream restoration nonprofits”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many stream restoration nonprofits are there based in the United States?

RevenueBase identified 491 company matches for stream restoration nonprofits 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?

Conservation Corps Minnesota & Iowa tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most stream restoration nonprofits?

Portland leads with 14 company records, followed by Denver (9) and Washington (9).

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 2,255 professional contacts with verified work emails tracked across these 491 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.