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Company · Pasadena · United States

Tetra Tech (United States)

In research, Tetra Tech (United States) stands highest in Physical Sciences (#10,396 of 12,888 worldwide), 2022–2025.

tetratech.comROR OpenAlex
World rank, 2022–2025
#16,539
of 28,054 · #13,562 all time
Rank in United States
#2,351
of 4,192
Research works
1.3k
▼ 3% vs 2013–17
Citations
19k
14.8 per fractional work
Top-10% rate
12.9%
record average 16.5%
Open access
29%
world 28%

What is Tetra Tech (United States) known for in research?

The fields where it stands highest, 2022–2025, ranked among every institution above the floor in each field.

FieldWorld rankWhere that sitsTop-10% rateWorksAll time
Physical SciencesDomain #10,396 of 12,888 12.0%122 #8552

Each strip is that field’s whole ranked pool, with the notch where Tetra Tech (United States) sits in it, in the colour of the band that rank falls in. The track under the rate is the rate itself: it carries no world mark, because the world rate differs by field (from about 6% to 21% in this record).

Field profile

Location quotient across every field it publishes in: outside the ring is more than an institution of this size would be expected to publish, inside it is less.

Agricultural and Biological Sciences: 1.06× its world share, 9 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 0.55× its world share, 5 worksBiochemistry, Geneti…Immunology and Microbiology: 0.90× its world share, 2 worksImmunology and Micro…Neuroscience: 0.50× its world share, 2 worksNeurosciencePharmacology, Toxicology and Pharmaceutics: 0.67× its world share, 0 worksPharmacology, Toxico…Chemical Engineering: 1.39× its world share, 1 worksChemical EngineeringChemistry: 0.55× its world share, 2 worksChemistryComputer Science: 1.08× its world share, 15 worksComputer ScienceEarth and Planetary Sciences: 5.20× its world share, 15 worksEarth and Planetary …Energy: 0.86× its world share, 1 worksEnergyEngineering: 1.76× its world share, 48 worksEngineeringEnvironmental Science: 4.05× its world share, 36 worksEnvironmental ScienceMaterials Science: 0.51× its world share, 3 worksMaterials ScienceMathematics: 0.08× its world share, 0 worksMathematicsPhysics and Astronomy: 0.37× its world share, 2 worksPhysics and AstronomyHealth Professions: 0.93× its world share, 4 worksHealth ProfessionsMedicine: 0.28× its world share, 10 worksMedicineNursing: 0.74× its world share, 1 worksNursingArts and Humanities: 0.37× its world share, 2 worksArts and HumanitiesBusiness, Management and Accounting: 0.52× its world share, 3 worksBusiness, Management…Decision Sciences: 1.26× its world share, 2 worksDecision SciencesEconomics, Econometrics and Finance: 0.49× its world share, 2 worksEconomics, Econometr…Psychology: 0.41× its world share, 2 worksPsychologySocial Sciences: 0.61× its world share, 14 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Earth and Planetary Sciences, 5.2×. Every wedge is a field page.

Who are the top researchers at Tetra Tech (United States)?

Ranked on the composite score, Alan T. White, Herman J. Gibb and Jack C. Cox lead among researchers whose main affiliation is Tetra Tech (United States).

  1. 1 Alan T. White United States · #138,188 worldwide 261 citations · 24 works
  2. 2 Herman J. Gibb United States · #556,248 worldwide 79 citations · 18 works
  3. 3 Jack C. Cox United States · #708,539 worldwide 21 citations · 17 works
  4. 4 H. Hodara United States · #734,376 worldwide 40 citations · 15 works
  5. 5 Jonathan Butcher United States · #749,647 worldwide 30 citations · 19 works
  6. 6 Sujoy B. Roy United States · #824,988 worldwide 64 citations · 18 works
  7. 7 Jim Glenn United States · #906,590 worldwide 11 citations · 15 works
  8. 8 John Riverson United States · #1,015,581 worldwide 41 citations · 31 works
  9. 9 James W. Mercer United States · #1,126,896 worldwide 67 citations · 23 works
  10. 10 Scott D. Struck United States · #1,224,833 worldwide 12 citations · 26 works
All ranked researchers at Tetra Tech (United States)

Which keywords describe research at Tetra Tech (United States)?

By fractional works in 2022–2025, weighted toward what it does more of than the world: Climate Change, Water Quality, Remote Sensing, Sustainability, Sediment Transport, Health Effects, Water Resources and Hydrological Modeling.

▲ more of its work than of the world’s◆ about the world’s share▼ less than the world’s

Size is fractional works in 2022–2025 in the topics tagged with each word; colour is the word's share of this institution's work against its share of the world's. The 40 words are chosen for being large and distinctive. Each links to the topic it comes from most.

All 40 words, with their numbers
  1. Climate Change20▲ 4.0×45 topics
  2. Sustainability9▲ 2.1×29 topics
  3. Machine Learning8▲ 1.40×25 topics
  4. Remote Sensing7▲ 3.3×17 topics
  5. Water Quality6▲ 8.7×11 topics
  6. Environmental Impact6▲ 1.95×24 topics
  7. Health Effects5▲ 5.0×12 topics
  8. Renewable Energy5▲ 1.79×16 topics
  9. Artificial Intelligence4▲ 1.78×8 topics
  10. Public Health4▲ 1.70×10 topics
  11. Sediment Transport4▲ 15×5 topics
  12. Water Resources4▲ 9.3×6 topics
  13. Hydrological Modeling4▲ 9.2×2 topics
  14. Big Data4▲ 2.2×7 topics
  15. Land Use Change4▲ 6.5×4 topics
  16. Global Warming3▲ 3.9×7 topics
  17. Groundwater3▲ 18×5 topics
  18. Climate Change Impact3▲ 6.4×3 topics
  19. Ocean Circulation3▲ 11×3 topics
  20. Global Distribution2▲ 22×2 topics
  21. Model Evaluation2▲ 11×2 topics
  22. Global Hydrology2▲ 19×1 topic
  23. Uncertainty Assessment2▲ 19×1 topic
  24. Air Quality2▲ 6.6×4 topics
  25. CFD Simulation2▲ 10×3 topics
  26. Data Assimilation2▲ 7.8×3 topics
  27. Eutrophication2▲ 12×3 topics
  28. Polycyclic Aromatic Hydrocarbons2▲ 23×2 topics
  29. Environmental Noise2▲ 25×1 topic
  30. Noise Pollution2▲ 25×1 topic
  31. CO2 Emissions2▲ 6.0×2 topics
  32. Pipeline2▲ 9.6×3 topics
  33. Reactive Transport2▲ 20×2 topics
  34. Bioaccumulation2▲ 11×3 topics
  35. Environmental Exposure2▲ 9.8×2 topics
  36. Fuel Consumption2▲ 13×2 topics
  37. Hydrogeology2▲ 47×3 topics
  38. Monitoring2▲ 11×3 topics
  39. Ocean Acidification2▲ 14×3 topics
  40. Thermodynamic Modeling2▲ 8.8×2 topics

Which research topics does Tetra Tech (United States) publish most on?

By volume in 2022–2025: Hydrology and Watershed Management Studies, Noise Effects and Management, Flood Risk Assessment and Management and Groundwater flow and contamination studies.

Hydrology and Watershed …2Hydrology and Watershed Management Studies: 2 fractional worksNoise Effects and Manage…2Noise Effects and Management: 2 fractional worksFlood Risk Assessment and Management: 2 fractional worksGroundwater flow and contamination studies: 2 fractional worksToxic Organic Pollutants Impact: 2 fractional worksSeismology and Earthquake Studies: 2 fractional worksLegal and Policy Issues: 2 fractional worksOceanographic and Atmosp…1Oceanographic and Atmospheric Processes: 1 fractional worksVehicle emissions and performance: 1 fractional worksWater resources management and optimization: 1 fractional works
Water Science and TechnologySpeech and HearingGlobal and Planetary ChangeEnvironmental Engineering6 others

Area is fractional works; colour is the subfield each topic belongs to.

  1. 1 Hydrology and Watershed Management Studies Water Science and Technology 2 works
  2. 2 Noise Effects and Management Speech and Hearing 2 works
  3. 3 Flood Risk Assessment and Management Global and Planetary Change 2 works
  4. 4 Groundwater flow and contamination studies Environmental Engineering 2 works
  5. 5 Toxic Organic Pollutants Impact Health, Toxicology and Mutagenesis 2 works
  6. 6 Seismology and Earthquake Studies Artificial Intelligence 2 works
  7. 7 Legal and Policy Issues Law 2 works
  8. 8 Oceanographic and Atmospheric Processes Oceanography 1 works
  9. 9 Vehicle emissions and performance Automotive Engineering 1 works
  10. 10 Water resources management and optimization Ocean Engineering 1 works

How open and international is its research?

Against the world’s own shares — the tick on each track. Both are shares of its output, so they sit on one scale and can be read against each other as well as against the world.

openly available28.9%not open71.1%

World: 28% of research is openly available.

with international co-authors19.2%domestic only80.8%

World: 19% is written across borders.

How has Tetra Tech (United States)'s research output changed?

Output in 2018–2022 was 3% lower than in 2013–2017.

1990200020102020
grewheldshrank

The same series as a ribbon — one cell per year, darker for more. The line above answers how much; this answers when.

Other research institutions in Pasadena

All research institutions in Pasadena

Research measures only: rankings here say nothing about teaching, admissions or student experience. Comparable institutions and collaboration partners are in the interactive view on the map.