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2383 - Hydrologist - Principal

at Pima County

Posted: 11/1/2019
Job Status: Full Time
Job Reference #: 2590127
Keywords: professional

Job Description

Overall Job Objective

Position Description

This position is in the Environmental Quality Department.  OPEN UNTIL FILLED.

Salary Grade: 59

Supervises and participates in the work of professional hydrology staff in the creation, review and analysis of hydrologic and hydraulic reports and studies, approves/disapproves floodplain use permit applications, evaluates groundwater quality and directs the study and placement of remote sensing equipment. This classification also represents the Flood Control District or Wastewater Management as a technical expert in assessment and maintenance of groundwater quality, permissible floodplain use and management, channel design and related technical issues.


(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.
(A Master's degree from an accredited college or university in one of the cited disciplines may substitute for one year of experience. An earned doctoral degree from an accredited college or university in one of the cited disciplines may substitute for two years of experience.)
(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. Experience with AZPDES/NPDES construction regulations.
  2. Experience with AZPDES/NPDES industrial regulations.
  3. Experience related to environmental inspections.
  4. Experience sampling surface water quality.
  5. Experience communicating, both orally and in writing, and explaining information to the regulated community and the public.

Selection Procedure:
Pima County Human Resources Department reserves the right to admit to the selection process only those candidates that meet the minimum/desired qualifications. All applications will be assessed based on an evaluation of the listed education and experience.  Candidates meeting the minimum/desired qualifications may be further evaluated/scored against any advertised Preferred Qualifications.  The hiring authority will interview and select the successful candidate from a referral list provided by Human Resources. Additional assessments/testing may be required as part of the selection process.

Supplemental Information

Licenses and Certificates: Valid driver license is required at time of application.  Valid AZ driver license is required at time of appointment. The successful applicant will be subject to a 39-month DOT Motor Vehicle Record review to determine applicant's suitability to operate county vehicles in accordance with Pima County administrative procedures.  Failure to obtain and maintain the required licenses and certifications shall be grounds for termination. Any offer of employment resulting from this recruitment is contingent upon Fleet Services' review and approval of the candidate's driving record. Failure to obtain/maintain the required licensure shall be grounds for termination.

Special Notice Items: The County requires pre-employment background checks. Successful candidates will receive a post-offer, pre-employment background screening to include verification of work history, education and criminal conviction history.  A prior criminal conviction will not automatically disqualify a candidate from employment with the County. Some positions may carry the risk of exposure to infectious diseases, blood-borne pathogens, asbestos or wastewater products, therefore special medical screening prior to or during employment may be necessary to assure employee health and safety.

Physical/Sensory Requirements: Some positions may require working in the field in extremes of temperature, sun, wind, rain and dusty conditions for protracted periods. Additional physical and sensory abilities will be determined by position.

Application Instructions

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