Company lists · Data refreshed September 2026

Top 20 Natural resource management consultants based in Seattle, United States

Name: Natural resource management consultants based in Seattle, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 35 companies tracked

RevenueBase identified 35 natural resource management consultants headquartered in Seattle, United States as of September 2026 and tracks 1,908 professional contacts across them, including 1,369 with verified work emails. Seattle is the largest hub.

This list covers natural resource management consultants headquartered in Seattle, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 5, 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 HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

35Companies

1,908Contacts tracked

1,369Verified emails

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The 20 largest natural resource management consultants based in Seattle, United States

Ranked by team size

Top 20 of 35 natural resource management consultants based in Seattle, United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names natural resource management consultants: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	ParametrixIndirect evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	501-1,000	880
	“At Parametrix, we help our clients imagine what's possible.” Source: company website · checked Sep 5, 2026
2	Anchor QEAIndirect evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	501-1,000	479
	“Headquartered in Seattle, Washington, Anchor QEA is a nationally recognized environmental science and engineering consulting firm specializing in aquatic, shoreline, and water…” Source: company website · checked Sep 5, 2026
3	Herrera Environmental ConsultantsPartial evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	51-200	176
	“Herrera Environmental Consultants is a leading engineering and scientific consulting firm focused on restoration, water, and sustainable development.” Source: company website · checked Sep 5, 2026
4	Cascadia Consulting GroupIndirect evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	51-200	110
	“Cascadia Consulting Group is a majority women-owned consulting firm specializing in environmental and sustainability solutions.” Source: company website · checked Sep 5, 2026
5	Hart Crowser, A Division Of Haley & AldrichIndirect evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	51-200	49
	“Hart Crowser’s engineers and scientists have the up-to-date knowledge to support practical designs and recommendations.” Source: company website · checked Sep 5, 2026
6	Floyd SniderPartial evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	11-50	48
	“Floyd\|Snider is a multi-disciplinary environmental consulting firm providing engineering, strategic project management, and scientific expertise to achieve balanced solutions to…” Source: company website · checked Sep 5, 2026
7	Soundearth Strategies, INCIndirect evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	11-50	33
	“SoundEarth is a 100% employee-owned environmental consulting firm with more than 40 dedicated and talented professionals working together to improve the environment in which we…” Source: company website · checked Sep 5, 2026
8	Watershed Science & EngineeringIndirect evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	11-50	16
	“At WSE, our focus is on service.” Source: company website · checked Sep 5, 2026
9	Raedeke Associates, INCIndirect evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	11-50	14
	“Since 1980, Raedeke (RAD-ĭ-kee) Associates, Inc.” Source: company website · checked Sep 5, 2026
10	Tree Solutions INCIndirect evidence	Seattle, United StatesHQ checked Sep 5, 2026	11-50	13
	“Urban Forestry and Arboriculture Consulting Services Tree Solutions Inc.” Source: company website · checked Sep 5, 2026
11	Ridolfi INCIndirect evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	11-50	10
	“Established in 1990, RIDOLFI is an award-winning, small, certified Women’s Business Enterprise (WBE) that specializes in environmental engineering and scientific consulting.” Source: company website · checked Sep 5, 2026
12	Leon Environmental, LLCStrong evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	1-10	9
	“Leon Environmental, LLC is a small business that specializes in permitting and regulatory compliance, habitat restoration, and natural resource science.” Source: company website · checked Sep 5, 2026
13	Clearway Environmental LLCStrong evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	11-50	8
	“Clearway Environmental provides natural resources analyses, habitat restoration, environmental compliance, and fisheries services for transportation and natural resources projects.” Source: company website · checked Sep 5, 2026
14	Plauché & Carr LLPStrong evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	1-10	8
	“Plauché & Carr attorneys serve as advocates and counselors to our clients regarding legal and regulatory issues related to natural resource based activities, primarily in marine…” Source: company website · checked Sep 5, 2026
15	True Wind CollaborativeIndirect evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	1-10	7
	“True Wind Collaborative is a consulting firm that designs and implements comprehensive strategic planning, stakeholder engagement, and communications programs in service of our…” Source: company website · checked Sep 5, 2026
16	Resilient ForestryIndirect evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	1-10	3
	“Resilient Forestry’s mission is to achieve the greatest outcome based on the best available science for our ecosystems and their surrounding communities.” Source: company website · checked Sep 5, 2026
17	Full Circle Environmental, INCPartial evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	1-10	2
	“Full Circle Environmental, Inc, a private environmental consulting firm, has been providing creative and effective approaches to resource conservation on behalf of business and…” Source: company website · checked Sep 5, 2026
18	Shelterwood ConsultingIndirect evidence	Seattle, United StatesHQ checked Sep 5, 2026	1-10	1
	“Why?” Source: company website · checked Sep 5, 2026
19	Peterman Consulting LLCPartial evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	1-10	1
	“Peterman Consulting LLC is a environmental consultancy based out of Seattle, Washington, United States.” Source: company website · checked Sep 5, 2026
20	Xyla Land And Resource AdvisorsIndirect evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	1-10	1
	“Xyla helps clients understand, evaluate, and maximize the value of timber and forest carbon opportunities while focusing on innovative and high integrity outcomes.” Source: company website · checked Sep 5, 2026

Showing 20 of 35 natural resource management consultants based in Seattle, United States

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Natural resource management consultants based in Seattle, United States at a glance

As of Sep 5, 2026

1-10Median size (employees)

SeattleLargest hub · 35 HQs

Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

11-50

51-200

501-1,000

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Seattle, over 35 companies.

How this list was built

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

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Seattle, United States whose own description of what they do matches “natural resource management consultants”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among natural resource management consultants, and records with no verified work email. Companies headquartered outside Seattle are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 1,369 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 5, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Natural resource management consultants by metro in the United States

Natural resource management consultants in Seattle35
Natural resource management consultants in Houston30
Natural resource management consultants in Portland29
Natural resource management consultants in Washington26

Frequently asked

How many natural resource management consultants are there based in Seattle, United States?

RevenueBase identified 35 natural resource management consultants headquartered in Seattle, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Parametrix, headquartered in Seattle, tops this list with the largest team on record.

Which city has the most natural resource management consultants?

Seattle leads with 35 headquartered companies, followed by Houston (30) and Portland (29).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,369 verified decision-maker contacts tracked across these 35 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 5, 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.