Company lists · Data refreshed September 2026

Top 25 Geoscience consulting firms based in Denver, United States

Name: Geoscience consulting firms based in Denver, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 109 companies tracked

RevenueBase identified 109 geoscience consulting firms headquartered in Denver, United States as of September 2026 and tracks 2,877 professional contacts across them, including 1,292 with verified work emails. Across the United States, Houston is the largest hub for this category (371 companies); Denver follows with 109.

This list covers geoscience consulting firms headquartered in Denver, 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 28, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 RevenueBase Smart Search rating on every row Refreshed Sep 28, 2026 86% judged on-target in blind review

109Companies

2,877Contacts tracked

1,292Verified emails

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The 25 largest geoscience consulting firms based in Denver, United States

Ranked by team size

Top 25 of 109 geoscience consulting firms based in Denver, United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to geoscience consulting firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Knight Piesold	Partial evidence	Denver, CO, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,231 contacts →
	Partial evidence “Knight Piésold is an employee-owned, global consulting firm providing specialist services to the mining, power, water resources, and infrastructure industries.” Source: RevenueBase Database · checked Sep 28, 2026
2	CTL Thompson	Indirect evidence	Denver, CO, United StatesHQ checked Sep 28, 2026	201-500	189 contacts →
	Indirect evidence “CTL\|Thompson (CTL\|T) has been providing innovative engineering solutions throughout Colorado since 1971.” Source: RevenueBase Database · checked Sep 28, 2026
3	Kumar And Associates, INC	Indirect evidence	Denver, CO, United StatesHQ checked Sep 28, 2026	51-200	140 contacts →
	Indirect evidence “Kumar & Associates provides geotechnical engineering, engineering geology, environmental sciences, construction observation and materials testing services for projects in the…” Source: RevenueBase Database · checked Sep 28, 2026
4	YEH And Associates, INC	Indirect evidence	Denver, CO, United StatesHQ checked Sep 28, 2026	51-200	95 contacts →
	Indirect evidence “Established in June Yeh and Associates, Inc.” Source: RevenueBase Database · checked Sep 28, 2026
5	LRE Water A Spheros Environmental Company	Indirect evidence	Denver, CO, United StatesHQ checked Sep 28, 2026	51-200	94 contacts →
	Indirect evidence “LRE Water is now Spheros Environmental.” Source: RevenueBase Database · checked Sep 28, 2026
6	Petroleum Field Services, LLC	Indirect evidence	Denver, CO, United StatesHQ checked Sep 28, 2026	51-200	94 contacts →
	Indirect evidence “As of January 1, 2017, Petroleum Field Services is rebranded as Ascent Geomatics Solutions.” Source: RevenueBase Database · checked Sep 28, 2026
7	Enscicon Corporation	Indirect evidence	Denver, CO, United StatesHQ checked Sep 28, 2026	51-200	87 contacts →
	Indirect evidence “Enscicon is an award-winning engineering & construction staffing agency that specializes in the following sectors: • Oil and Gas • Power Generation and Delivery • Mining and…” Source: RevenueBase Database · checked Sep 28, 2026
8	Wright Water Engineers, INC	Partial evidence	Denver, CO, United StatesHQ checked Sep 28, 2026	11-50	65 contacts →
	Partial evidence “Wright Water Engineers, Inc.(WWE) is a water resources consulting engineering firm that was founded in 1961.” Source: RevenueBase Database · checked Sep 28, 2026
9	R&r Engineers-Surveyors, INC	Indirect evidence	Denver, CO, United StatesHQ checked Sep 28, 2026	51-200	50 contacts →
	Indirect evidence “Founded in Denver, CO in 1988, R&R Engineers – Surveyors, Inc.” Source: RevenueBase Database · checked Sep 28, 2026
10	Spheros Environmental	Indirect evidence	Denver, CO, United StatesHQ checked Sep 28, 2026	201-500	48 contacts →
	Indirect evidence “Environmental insight for complex real-world decisions Spheros Environmental helps clients make clear, defensible decisions in complex environments.” Source: RevenueBase Database · checked Sep 28, 2026
11	TCO Land & Regulatory	Indirect evidence	Denver, CO, United StatesHQ checked Sep 28, 2026	51-200	42 contacts →
	Indirect evidence “TCO Land & Regulatory has been advancing the energy sector as a trusted partner for nearly 70 years, offering exceptional land services, project management, and energy compliance.” Source: RevenueBase Database · checked Sep 28, 2026
12	Quandary Consultants	Partial evidence	Denver, CO, United StatesHQ checked Sep 28, 2026	51-200	40 contacts →
	Partial evidence “Quandary Consultants, LLC (QC) is an environmental and regulatory consulting company.” Source: RevenueBase Database · checked Sep 28, 2026
13	Kilduff Underground Engineering, INC	Indirect evidence	Denver, CO, United StatesHQ checked Sep 28, 2026	51-200	40 contacts →
	Indirect evidence “Kilduff Underground Engineering (KUE) was established in 2014 by Todd Kilduff, PE, to support contractors, A/E firms and owners.” Source: RevenueBase Database · checked Sep 28, 2026
14	Columbine Corporation	Indirect evidence	Denver, CO, United StatesHQ checked Sep 28, 2026	201-500	33 contacts →
	Indirect evidence “We are driven to be the best geological well-site service company in the country.” Source: RevenueBase Database · checked Sep 28, 2026
15	E3 Consulting Services	Partial evidence	Denver, CO, United StatesHQ checked Sep 28, 2026	11-50	31 contacts →
	Partial evidence “Founded in E3 Consulting® (E3) is a leading professional services firm that provides technical, commercial, financial, and regulatory services for complex and capital-intensive…” Source: RevenueBase Database · checked Sep 28, 2026
16	EFCG	Partial evidence	Denver, CO, United StatesHQ checked Sep 28, 2026	11-50	28 contacts →
	Partial evidence “Founded in 1990, the Environmental Financial Consulting Group (EFCG) is a global specialized M&A advisor and management consultant to Architecture, Engineering, and Consulting…” Source: RevenueBase Database · checked Sep 28, 2026
17	Lithos Paleontology And Cultural Resource Consultants	Indirect evidence	Denver, CO, United StatesHQ checked Sep 28, 2026	51-200	22 contacts →
	Indirect evidence “Lithos stands as a premier consultancy specializing in comprehensive paleontological and archaeological resource management.” Source: RevenueBase Database · checked Sep 28, 2026
18	Nitec LLC	Indirect evidence	Denver, CO, United StatesHQ checked Sep 28, 2026	11-50	19 contacts →
	Indirect evidence “Since its inception in 1995, NITEC has had the opportunity to perform many large-scale, fully-integrated studies on highly complex reservoirs in addition to spacing, completion…” Source: RevenueBase Database · checked Sep 28, 2026
19	Solum Consulting Group	Indirect evidence	Denver, CO, United StatesHQ checked Sep 28, 2026	1-10	15 contacts →
	Indirect evidence “The environment and sustainability are key considerations across the mining, energy and resources sectors.” Source: RevenueBase Database · checked Sep 28, 2026
20	Progressive Consulting	Partial evidence	Denver, CO, United StatesHQ checked Sep 28, 2026	11-50	11 contacts →
	Partial evidence “A Consulting Firm that has been in business since 1996, we are a team of oil and gas regulatory and production reporting consultants that have expertise in Local, State, and…” Source: RevenueBase Database · checked Sep 28, 2026
21	Applegate Group, INC	Indirect evidence	Denver, CO, United StatesHQ checked Sep 28, 2026	11-50	10 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
22	K1c Consulting LLC	Partial evidence	Denver, CO, United StatesHQ checked Sep 28, 2026	1-10	9 contacts →
	Partial evidence “K1C is an engineering and scientific consulting firm focused on empowering our clients to create astonishing products, solve challenging problems and perform cutting edge research.” Source: RevenueBase Database · checked Sep 28, 2026
23	Aqyre Energy	Partial evidence	Denver, CO, United StatesHQ checked Sep 28, 2026	51-200	7 contacts →
	Partial evidence “AQYRE Energy provides high level energy consulting with a core focus on oil & gas acquisitions.” Source: RevenueBase Database · checked Sep 28, 2026
24	Fielding Hill, LLC	Indirect evidence	Denver, CO, United StatesHQ checked Sep 28, 2026	1-10	7 contacts →
	Indirect evidence “Navigating Energy Regulations with Expertise - At Fielding Hill, we specialize in guiding energy sector clients through the complexities of regulatory, environmental, and…” Source: RevenueBase Database · checked Sep 28, 2026
25	Vanoco Consulting	Indirect evidence	Denver, CO, United StatesHQ checked Sep 28, 2026	1-10	7 contacts →
	Indirect evidence “Vanoco has locations in both Denver and Calgary.” Source: RevenueBase Database · checked Sep 28, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: geoscience consulting firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names geoscience consulting firms.
Partial evidence: Its own public description names part of geoscience consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name geoscience consulting firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 109 geoscience consulting firms based in Denver, United States

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Geoscience consulting firms based in Denver, United States at a glance

As of Sep 28, 2026

44.9%Verified-email coverage

26.4Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

Email recency for this list is measured across the whole United States list rather than for Denver, so it is reported there. Company counts and contact totals on this page are exact for Denver, over 109 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 geoscience consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search 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 Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Denver, United States whose own description of what they do matches “geoscience consulting firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names geoscience consulting firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among geoscience consulting firms, and records with no verified work email. Companies headquartered outside Denver 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 its RevenueBase Smart Search 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, 1,292 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 28, 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.

Geoscience consulting firms by metro in the United States

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names geoscience consulting firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many geoscience consulting firms are there based in Denver, United States?

RevenueBase identified 109 geoscience consulting firms headquartered in Denver, 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?

Knight Piesold, headquartered in Denver, tops this list with the largest team on record.

Which city in the United States has the most geoscience consulting firms?

Houston leads the United States with 371 headquartered companies, followed by Denver (109) and Austin (78).

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 1,292 verified decision-maker contacts tracked across these 109 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 28, 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 Smart Search, 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.