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Environmental Hydrology & Water Resources

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Environmental Hydrology & Water Resources

Bachelor of Science

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Hydrology is the science of water. It deals with the origin, distribution, and properties of water on Earth and other planets. Hydrologists work to solve water- related problems. They consider water use from a variety of perspectives- social, economic, legal, scientific, and environmental- to determine how differing viewpoints affect the quality and quantity of a community's water supply. They study pollution carried by water- including oceans, rivers, streams, rain, snow, and ice- and devise methods to clean and control it. Some study weather- related problems such as flood forecasting, drought management, acid rain, and global warming. Others manage water resources so that the goals of all water users are achieved efficiently while protecting the environment.

Major Details

College: College of Science
Admissions Requirements:


Math Required:


    This strand involves skill and facility with calculus. The S-strand begins at one of two calculus options - MATH 124 (Calculus I with Applications) or MATH 125 (Calculus I). Students who successfully complete the S-strand may continue on to MATH 129 (Calculus II), MATH 223 (Vector Calculus), or beyond. Those who choose but are not ready to begin the S-strand will be required to take preparatory work.
Second Language Required:

2 Semesters

  • Scoring the equivalent of second-semester skill level on an entrance or placement examination administered by The University of Arizona.
  • Completion with a C or better of a second semester course at the post-secondary level.
  • An AP (Advanced Placement), IB (International Baccalaureate) or CLEP (College Level Entrance Program) language score determined by the individual language department.
  • In the College of Engineering by a method determined within the College; however, all students in the college must also take a language placement examination on entrance to the University.
2 Semesters
Fees: No
Pre-Major: No
Available at:
  • Main Campus

Four-Year Plan

Archived plans are available on Degree Search 2011-2017 for many degree plans. These are sample plans. Please work with your academic advisor for more specific and up-to-date requirements.

Select a year:

UA Course Requirements Units
1st Semester
MATH 122A Functions of Calculus 1
MATH 122B First-Semester Calculus 4
CHEM 151 General Chemistry I 4
ENGL 101 First Year Composition 3
Tier I General Education 3
Second Semester Second Language 4
2nd Semester
MATH 129 Calculus II 3
CHEM 152 General Chemistry II 4
PHYS 141 Introductory Mechanics 4
ENGL 102 First Year Composition 3
Tier I General Education 3
3rd Semester
MATH 223 Vector Calculus 4
HWRS 250 Principles of Hydrology 3
PHYS 142 Introductory Optics and Thermodynamics 3
Tier I General Education 3
GEOS 251 Physical Geology 4
4th Semester
CE 218 Mechanics of Fluids 3
MATH 254 Intro to Ordinary Differential Equations 3
ECOL 130 Natural History Southwest 3
GEOS 304 Structure + Physics or GEOS 302 Principles of Stratigraphy and Sedimentation 4
Tier I General Education 3
5th Semester
HWRS 431 Hydrogeology 4
SIE 305 Intro Engr Probability & Stats 3
CE 427 Comp App Hydraulics 3
Tier II General Education 3
Computational elective 3
6th Semester
Tech Elective 3
ATMO 436A Fundamentals of the Atmospheric Sciences 3
SWES 408 Scientific Writing for Environmental, Agricultural and Life Sciences 3
HWRS 415 Intro Water Resource Policy 3
CE 423 Hydrology 3
HWRS 413A Field Hydrology 2
7th Semester
HWRS 443A Envir. Risk + Econ Analysis WR 3
HWRS 417A Fund. of Water Quality 3
HWRS 498 Senior Capstone Course [or emphasis area elective] 3
Tech/Gen 3
RNR course GIS-related course 3
8th Semester
Tier II General Education 3
HWRS 449 Statistical Hydrology 3
HWRS 482 Appl. Groundwater Modeling [or emphasis area elective] 3
SWES 470 Soil Physics 3
Tech/Gen 3
HWRS498 Senior Capstone Course Additional Unit 1

AZ Transfer Pathways

This page is designed for in-state transfer students who plan to attend the University of Arizona. The information presented lists the most accurate course equivalencies and may not include all possible requirements. Transfer students are strongly encouraged to use this site for reference only and not for self-advising.

Transfer students should work with their community colleges and UA advisors to develop an individualized plan for transfer, and visit

  • All posted Pathways (except for Bachelor of Applied Science Pathways) fulfill an AGEC and most also fulfill an Associate Degree
  • Following a Pathway does not guarantee admission to the UA nor admission to a college/major/program at the UA
  • Use Pathways in consultation with advisors from your community college and the UA
  • Pathways are subject to change at any time

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