Company lists · Data refreshed September 2026

Top 22 Natural resource management consultants based in Portland, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 29 companies tracked

RevenueBase identified 29 natural resource management consultants headquartered in Portland, United States as of September 2026 and tracks 328 professional contacts across them, including 151 with verified work emails. Seattle is the largest hub.

This list covers natural resource management consultants headquartered in Portland, 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

29Companies

328Contacts tracked

151Verified emails

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The 22 largest natural resource management consultants based in Portland, United States

Ranked by team size

Top 22 of 29 natural resource management consultants based in Portland, 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	Mason, Bruce & Girard, Inc. Mb&gIndirect evidence	Portland, OR, United StatesHQ checked Sep 5, 2026	51-200	77
	“Since 1921 Mason, Bruce & Girard, Inc.(MB & G) has provided forestry, environmental, and geospatial services to public and private clients.” Source: company website · checked Sep 5, 2026
2	GSI Water Solutions, INCPartial evidence	Portland, OR, United StatesHQ checked Sep 5, 2026	51-200	66
	“GSI Water Solutions, Inc, is a specialized groundwater, environmental, and water resources consulting firm.” Source: company website · checked Sep 5, 2026
3	Turnstone Environmental Consultants INCStrong evidence	Portland, OR, United StatesHQ checked Sep 5, 2026	11-50	40
	“Throughout the Pacific Northwest and western United States, Turnstone Environmental Consultants is a leading provider of natural resource services to a wide range of industries…” Source: company website · checked Sep 5, 2026
4	FB Environmental AssociatesPartial evidence	Portland, ME, United StatesHQ checked Sep 5, 2026	11-50	28
	“Where Science Meets Civics" Our Mission: FB Environmental is dedicated to practical stewardship of our natural world.” Source: company website · checked Sep 5, 2026
5	Samara Group PDXIndirect evidence	Portland, OR, United StatesHQ checked Sep 5, 2026	1-10	19
	“Samara Group LLC was founded to enhance environmental projects centered around rigorous science, inclusive partnerships, and effective communications.” Source: company website · checked Sep 5, 2026
6	Mosaic Ecology LLCStrong evidence	Portland, OR, United StatesHQ checked Sep 5, 2026	11-50	17
	“As a natural resource management firm, we provide the expertise and resources to sustainably integrate natural areas into the human environment, bring degraded land to life, and…” Source: company website · checked Sep 5, 2026
7	Summit Water ResourcesPartial evidence	Portland, OR, United StatesHQ checked Sep 5, 2026	1-10	12
	“Summit Water Resources has more than 100 years of combined experience in the development of municipal, agricultural, and industrial groundwater supply, aquifer storage and…” Source: company website · checked Sep 5, 2026
8	Evren Northwest, INCIndirect evidence	Portland, OR, United StatesHQ checked Sep 5, 2026	11-50	10
	Source: company website · checked Sep 5, 2026
9	Triplewin AdvisoryIndirect evidence	Portland, OR, United StatesHQ checked Sep 5, 2026	1-10	8
	“Everyone is too aware of the dangers of ignoring sustainability, but are you aware of the range of advantages in a proper sustainability strategy?” Source: company website · checked Sep 5, 2026
10	Northwest WatershedsPartial evidence	Portland, United StatesHQ checked Sep 5, 2026	1-10	7
	“Northwest Watersheds LLC provides water resources engineering services to protect communities, restore habitat, and provide climate resiliency.” Source: company website · checked Sep 5, 2026
11	Annear Water ResourcesPartial evidence	Portland, OR, United StatesHQ checked Sep 5, 2026	1-10	5
	“Located in the Pacific Northwest, Annear Water Resources (AWR) has provided water resource and environmental services to clients in the Western United States for the past 25 years.” Source: company website · checked Sep 5, 2026
12	EES Environmental Consulting INCPartial evidence	Portland, OR, United StatesHQ checked Sep 5, 2026	1-10	4
	“EES is a unique team of professional consultants specializing in environmental assessment, investigation, and cleanup services.” Source: company website · checked Sep 5, 2026
13	Project PivotIndirect evidence	Portland, OR, United StatesHQ checked Sep 5, 2026	1-10	4
	“Project Pivot is a women-owned, sustainability consulting firm in Portland, Oregon.” Source: company website · checked Sep 5, 2026
14	QW Consulting, LLCPartial evidence	Portland, OR, United StatesHQ checked Sep 5, 2026	1-10	3
	“At QW Consulting we provide innovative and economical solutions in response to clients’ information management, translation, systems support, and communication needs.” Source: company website · checked Sep 5, 2026
15	US Forest Capital LLCIndirect evidence	Portland, OR, United StatesHQ checked Sep 5, 2026	1-10	3
	“Impact Investment & Conservation Finance Strategies That Keep Working Lands Working.” Source: company website · checked Sep 5, 2026
16	Lichen Land And Water INCIndirect evidence	Portland, OR, United StatesHQ checked Sep 5, 2026	1-10	2
	Source: company website · checked Sep 5, 2026
17	Integrative Economics, LLCIndirect evidence	Portland, OR, United StatesHQ checked Sep 5, 2026	1-10	2
	“We are building a transdisciplinary team to help tackle pest and disease challenges in agriculture.” Source: company website · checked Sep 5, 2026
18	E-PurPartial evidence	Portland, United StatesHQ checked Sep 5, 2026	1-10	2
	“E-PUR provides client-focused hydrologic, geologic, engineering, and environmental consulting services on a wide range of water resource and water supply projects.” Source: company website · checked Sep 5, 2026
19	Climbsmart StrategiesIndirect evidence	Portland, OR, United StatesHQ checked Sep 5, 2026	1-10	1
	“ClimbSmart Strategies specializes in guiding organizations through the complexities of change to drive purpose-forward and sustainable transformations.” Source: company website · checked Sep 5, 2026
20	Primrose Research Group LLCIndirect evidence	Portland, ME, United StatesHQ checked Sep 5, 2026	1-10	1
	“We support public, community, and non-profit partners on a range of parks, trails, and land conservation research, planning, advocacy, and analysis efforts.” Source: company website · checked Sep 5, 2026
21	Context Group LLCIndirect evidence	Portland, OR, United StatesHQ checked Sep 5, 2026	1-10	1
	“Team of seasoned executives, architects, owners, farmers, and other land experts who tackle big land projects.” Source: company website · checked Sep 5, 2026
22	Justin B. Green ConsultingPartial evidence	Portland, OR, United StatesHQ checked Sep 5, 2026	1-10	1
	“Solutions-Oriented Consultancy Providing Environment, Energy, and Government Consulting.” Source: company website · checked Sep 5, 2026

Showing 22 of 29 natural resource management consultants based in Portland, United States

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Natural resource management consultants based in Portland, 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

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 Portland, over 29 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 Portland, 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 Portland 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, 151 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 Portland, United States?

RevenueBase identified 29 natural resource management consultants headquartered in Portland, 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?

Mason, Bruce & Girard, Inc. Mb&g, headquartered in Portland, 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 151 verified decision-maker contacts tracked across these 29 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.