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Pima County Government
Tucson, AZ
  • Expired: over a month ago. Applications are no longer accepted.
Job Description


Position Description

This position is in the Compliance & Regulatory Affairs Office of the Regional Wastewater Reclamation Department, located at the Water Campus located at Ruthrauff and I-10.

Salary Grade: 59

As the Hydrologist Principal, you will supervise and participate in the work of professional hydrology staff in the creation, review, and analysis of hydrologic and hydraulic reports. You will also study and approve or disapprove floodplain use permit applications as well as evaluate groundwater quality, and direct the study and placement of remote sensing equipment. This classification also acts as a technical expert in the assessment and maintenance of groundwater quality, permissible floodplain use and management, channel design, and related technical issues. 
Please note: Successful candidates offered employment with Pima County, including current employees who have applied for new positions, are required to provide proof of COVID-19 vaccination prior to their scheduled start date. If you are unable to become fully vaccinated due to a medical disability or religious observance/practice, you must request an accommodation – accommodation forms are located online.


(Work assignments may vary depending on the department's needs and will be communicated to the applicant or incumbent by the supervisor.)

  • Supervises professional and support staff performing hydrologic and hydraulic studies and reviewing studies submitted by developers and engineering firms;
  • Reviews and approves/disapproves development plans, improvement plans and subdivision plats for compliance with the Floodplain Management Ordinance(s) and channel design standard;
  • Interprets the Floodplain Management Ordinance(s) and other laws, rules and regulations dealing with floodplains and hydrology;
  • Represents the Flood Control District at meetings of the Subdivision and Development Review Committee (SDRC);
  • Reviews floodplain use permit applications and issues/denies the permit;
  • Meets with consulting engineers to explain deficiencies in hydrologic and hydraulic reports and to resolve differences;
  • Determines the need for and supervises the installation and maintenance of rain, gauges, flow meters and other components of the flood warning system;
  • Develops and administers master drainage basin plans;
  • Serves as Flood Control District representative for the creation of flood control policies for area plans;
  • Contributes to the design of flood mitigation and habitat restoration projects.
  • Directs consultants investigating groundwater quality at county wastewater treatment facilities and waste disposal sites;
  • Evaluates and interprets groundwater quality data;
  • Determines the need for and supervises the installation and maintenance of groundwater quality monitoring, rain gauges, storm tracking and flood warning systems;
  • Establishes and reviews Wastewater Management standards and procedures to insure compliance with Environmental Protection Agency (EPA) guidelines;
  • Determines the need for and coordinates the installation of special equipment such as storm tracking display and lightening detection and recording systems;
  • Prepares the budget for the section supervised and monitors expenditures.

Knowledge of:

  • development and management practices for long-range basin management plan and groundwater quality investigations and monitoring;
  • principles and practices of surface/ground water hydrology and pollution source management;
  • provisions and restrictions of the Floodplain Management Ordinance(s) or federal, state and local regulations relevant to the control of groundwater quality;
  • specifications and formats for hydrologic and hydraulic reports;
  • storm drainage and channel design standards in alluvial channels;
  • principles and practices of supervision and management.

Skill in:

  • applying hydrologic and hydraulic principles and making calculations;
  • reviewing hydrologic/hydraulic reports for accuracy and technical sufficiency;
  • coordinating diverse hydrological, engineering and operational activities;
  • gathering and analyzing hydrologic/hydraulic data;
  • use of computer-based resources to create, maintain, manipulate and report data and activities;
  • use, and analysis of, spatial data in geographic information systems (GIS);
  • habitat restoration for improved watershed and floodplain function;
  • reading and interpreting topographic maps, aerial photos, legal descriptions, sketches and graphs;
  • reviewing and evaluating the work of other professional, paraprofessional and administrative staff;
  • preparing and monitoring budgets;
  • effective verbal and written communication.


Minimum Qualifications

(1) A bachelor's degree from an accredited college or university with a major in hydrology, hydrogeology, geology, earth science, atmospheric science, environmental science, civil engineering, agricultural engineering, or environmental engineering, or a closely related field as defined by the appointing authority at the time of the recruitment and six years of experience in hydrology, hydrogeology or watershed management. (Relevant experience and/or education from an accredited college or university may be substituted.)
(2) Eight years of professional experience in hydrology, hydrogeology, or watershed management.

Qualifying education and experience must be clearly documented in the "Education" and "Work Experience" sections of the application.  Do not substitute a resume for your application or write "see resume" on your application.

Preferred Qualifications: (Be specific in describing your experience in your application. Ensure the descriptions provided illustrate your competencies, specifically addressing the required and preferred qualifications.):

  1. Minimum two (2) years experience interpreting geologic, hydrologic, and environmental data. Familiarity with groundwater modeling and water quality impact of wastewater on rivers, aquifers, and aquifer recharge. 
  2. Minimum two (2) years experience writing technical reports, describing surface water flow, groundwater flow, and the environmental effect of changes in water quality on surface water and groundwater. 
  3. Minimum four (4) years experience with state and federal regulations related to aquifer protection permits, surface water discharge permits, recharge permits, wells, and water rights.
  4. Experience with sampling, design, installation, and maintenance of monitoring wells and pumps.
  5. Experience managing contractors. 

Pima County Government


Tucson, AZ



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