How to Become a Hydrologist
Hydrologists earn a median salary of $96,600/year in the United States. Most positions require Bachelor's degree. The highest-paying states include Maryland, Virginia, New Jersey.
Where Hydrologists have the most money left over after rent
Median pay minus estimated federal + state + FICA taxes, minus 12 months of rent at HUD's 2-bedroom Fair Market Rent. Darker green means more money left over each year. Hover any state for the breakdown.
View map data as a table
| State | Median (nominal) | Rent/mo (2BR) | Left after rent |
|---|---|---|---|
| Maryland | $143K | $1,795 | $80K |
| Virginia | $132K | $1,646 | $74K |
| Missouri | $116K | $1,097 | $72K |
| Georgia | $122K | $1,434 | $71K |
| New Jersey | $127K | $2,067 | $67K |
| Nevada | $108K | $1,501 | $66K |
| Alaska | $109K | $1,643 | $65K |
| Louisiana | $105K | $1,191 | $64K |
| Wyoming | $95K | $1,008 | $63K |
| Ohio | $98K | $1,188 | $61K |
| Washington | $106K | $1,830 | $61K |
| Michigan | $101K | $1,272 | $60K |
| New Mexico | $97K | $1,119 | $60K |
| Oklahoma | $97K | $1,081 | $60K |
| Massachusetts | $119K | $2,347 | $58K |
| California | $122K | $2,471 | $57K |
| Pennsylvania | $92K | $1,351 | $54K |
| Utah | $94K | $1,350 | $54K |
| Minnesota | $95K | $1,384 | $53K |
| Colorado | $101K | $1,832 | $53K |
| Montana | $85K | $1,129 | $50K |
| Arizona | $87K | $1,437 | $50K |
| Indiana | $81K | $1,144 | $49K |
| Iowa | $81K | $1,064 | $49K |
| Oregon | $94K | $1,555 | $48K |
| Texas | $81K | $1,415 | $48K |
| Vermont | $86K | $1,498 | $48K |
| Idaho | $79K | $1,136 | $47K |
| North Carolina | $82K | $1,284 | $47K |
| Illinois | $84K | $1,407 | $46K |
| Wisconsin | $79K | $1,202 | $46K |
| Florida | $77K | $1,658 | $43K |
| New York | $88K | $1,917 | $43K |
| South Carolina | $66K | $1,263 | $37K |
Education and training
Education requirements for this career vary by employer and specialization. Check the Bureau of Labor Statistics Occupational Outlook Handbook for the most current educational requirements, including typical degree levels, preferred fields of study, and any specialized training programs.
Hydrologists positions typically call for Bachelor's degree. Hands-on experience through internships, entry-level positions, or structured training complements formal education.
Licensing and certification
Licensing and certification requirements vary by state and employer. Some roles in this field require professional licensure; others rely on voluntary certifications to demonstrate competence. Check with your state's relevant licensing board for specific requirements in your area.
What the day-to-day looks like
The daily work in this field involves a combination of technical skills, problem-solving, and collaboration. Work environments range from office settings to field locations depending on the specific role and employer. Most positions are full-time, with overtime availability varying by industry and seasonal demand.
Career progression
Career advancement typically follows a path from entry-level to experienced to senior to management. Specialization, additional certifications, and advanced degrees can accelerate progression and unlock higher-paying roles. The salary difference between the 25th and 75th percentile for this occupation gives a realistic picture of the earnings growth you can expect over a career.
Salary progression
Highest paying states
| State | Median salary | Employment |
|---|---|---|
| Maryland | $143K | 90 |
| Virginia | $132K | 40 |
| New Jersey | $127K | N/A |
| California | $122K | 540 |
| Georgia | $122K | 30 |
| Massachusetts | $119K | 50 |
| Missouri | $116K | 50 |
| Alaska | $109K | 60 |
| Nevada | $108K | 170 |
| Washington | $106K | 350 |
Where the jobs are
The highest-paying state for hydrologistss is Maryland at $143,010/year, that's $46,410 above the national median. But higher pay often comes with higher costs. Before assuming the top-paying state is the best financial move, check the full affordability breakdown for Maryland.
The pay gap between the highest and lowest-paying states is $77,240. That spread sounds dramatic, but cost-of-living differences offset much of it. A hydrologists making $65,770 in South Carolina may have more purchasing power than one making $143,010 in Maryland if rent and local prices differ enough.
By employment volume, the states with the most hydrologists jobs are California (540 workers), Arizona (400 workers), Ohio (390 workers). High employment numbers mean more job openings, more employer competition for talent, and usually more leverage when negotiating salary. States with fewer workers in the field may pay less but also have less competition for positions.
For the full state-by-state comparison with salary percentiles, cost-of-living adjustment, and rent affordability for hydrologistss, see the complete salary data page.
Salary negotiation
When negotiating salary for this role, the most effective approach is to know the BLS percentile range for your specific location. If you're at the 25th percentile with 5+ years of experience, you have a strong case for a market adjustment. Competing offers, specialized skills, and willingness to relocate are the most common negotiation levers.
What the data doesn't tell you
BLS salary data provides a reliable national picture, but actual compensation can vary based on employer size, industry sector, and geographic location within a state. The percentile breakdown on AffordMap salary pages gives a more nuanced view than the median alone.
See the full salary picture
Percentile breakdown, cost of living, rent burden, and purchasing power for hydrologistss in every metro.
View Hydrologists salaries →Frequently asked questions
How much does a hydrologists make?▼
The median hydrologists salary in the United States is $96,600 per year ($46/hour). Entry-level positions start around $64,020, while experienced professionals earn up to $153,130.
What education do you need to become a hydrologist?▼
Most hydrologists positions require Bachelor's degree. Requirements vary by state and employer. Check with your state's licensing board for specific requirements.
What is the job outlook for hydrologists?▼
Check the Bureau of Labor Statistics Occupational Outlook Handbook for the latest employment projections for hydrologists.
What are the highest paying states for hydrologists?▼
The highest paying states for hydrologists are Maryland ($143,010), Virginia ($132,080), New Jersey ($126,680), California ($122,110), Georgia ($121,830). Salaries vary significantly by location due to cost of living and local demand.