The organizational structure of Chianan Management Office, Irrigation Agency from top to bottom includes:

1 Director, 1 Deputy Director, and 1 Chief Engineer. There are also the General Affairs Division, Finance Division, Management Division, Engineering Division, Accounting and Statistics Office, Human Resources Office, Counseling Office, and Planning Office. 

The General Affairs Division includes the Documentation Section, General Affairs Section, and Cashier Section. The Finance Division includes the Expropriation Section and Property Section. The Management Division includes the Irrigation Section, Supervision Section, Mechatronics Section, Water Quality Section, and Reservoir and Facility Maintenance Section. The Engineering Division includes the Design Section, Construction Surveillance Section, Construction Section and Tourism Section. The Accounting and Statistics Office includes the Accounting Section and Budgeting Section. The Human Resources Office includes the Performance Evaluation Section and Appointment and Removal Section. The Counseling Office includes the First Section and Second Section. The Planning Office includes the Public Relations Section, Green Energy Section and Information Management Section.

There are also affiliated branches as follows: 

• Irrigation Technology Promotion Branch: Includes Experiment Section, Promotion Section, and Business Section. 
• Wushantou Reservoir Scenic Area Branch: Includes Operation Section and Business Section. 
• Wushantou Branch: Includes General Affairs Section, Business Section and Reforestation Section, with stations including Dongkou Station, Xikou Station, Daqi Station, Chongqiao Station, Songshui Station, Yanti Station, Fenji Station, Guantian Station, Jiaba Station, Donghe Station, Wulin Station, Zhongyang Station, Xizhuang Station, and Dajue Station. 
• Baihe Reservoir Branch: Includes General Affairs Section and Business Section, with stations including Baihe Station and Dongshan Station. 
• Puzi Branch: Includes Construction Section, Management Section and General Affairs Section, with stations including Puzi Station, Lucao Station, Meipu Station, Zhucun Station, Songmei Station, Shulin Station, Zhong'an Station, Guangrong Station, Yizhu Station, Suantou Station, Liujiau Station, Xiayi Station, Pingxi Station, and Xiatan Station. 
• Chiayi Branch: Includes Construction Section, Management Section and General Affairs Section, with stations including Chiayi Station, DingLiou Station, Zhuqi Station, Xingzhong Station, Minxiong Station, Xingang Station, Guogou Station, Dake Station, Taibau Station, Xikou Station, and Yuemei Station. 
• Xinying Branch: Includes Construction Section, Management Section and General Affairs Section, with stations including Xinying Station, Chongxi Station, Liuying Station, Anxi Station, Yanshui Station, Huanya Station, Shi'an Station, Houbi Station, and Deyuanpi Reservoir Station. 
• Jiali Branch: Includes Construction Section, Management Section and General Affairs Section, with stations including Jiali Station, Xuejia Station, Zilong Station, Xigang Station, Qigu Station, Wunnei Station, and Ouwang Station. 
• Madou Branch: Includes Construction Section, Management Section and General Affairs Section, with stations including Longtian Station, Liujia Station, Xiaying Station, Zhongying Station, and Madou Station. 
• Xinhua Branch: Includes Construction Section, Management Section and General Affairs Section, with stations including Guiren Station, Xishi Station, Annan Station, Gongwen Station, Xinhua Station, Xinshi Station, Anding Station, Shanhua Station, and Gangkou Station.

Construction, improvement, repair and other engineering planning, surveying, designing, project examination, construction, acceptance and other matters relating to irrigation facilities. Also established a tourism section to be responsible for tourism business at Wushantou Reservoir Scenic Area.

1. Engineering project planning
2. Annual planning, measurement and budgets for new improvement and disaster recovery projects
3. Engineering project performance assessment and technical research
4. Other engineering project assistance
5. Petition and investigation cases
6. Other matters

1. Review of engineering project design budgets
2. Engineering project inspection and quality control
3. Salary rate
4. Engineering project inspection
5. Other matters

1. Process bidding
2. Engineering project contracts
3. Construction plan execution
4. Engineering change design
5. Initial inspection and acceptance
6. Engineering project final accounts
7. Engineering project construction safety

1. Tourism development
2. Annual plan
3. Designation of sailing areas and vessel capacity planning
4. Tourism operations execution
5. Land use planning in scenic areas
6. Other matters

Irrigation and waterway maintenance work in the jurisdiction, and responsibility for the maintenance of the office's water pumping equipment and telephone system

1. Regional irrigation planning
2. Irrigation plan
3. Water management
4. Water rights registration
5. Farmland pollution prevention and surveillance
6. Irrigation land management
7. Operation results
8. Hydrometeorology
9. Experimental Research
10. Irrigation management regulations

1. Irrigation and drainage channel management
2. Irrigation working groups
3. Management of other uses for irrigation facilities
4. Chart and data management
5. Matters related to petitions and proposals

1. Mechanical and electrical equipment and maintenance management
2. Telecommunications equipment

1. Water quality monitoring and investigation
2. Inspection report
3. Water pollution case processing
4. Water quality improvement plans
5. Data creation and statistical data from monitoring points and drainage accounts
6. Water quality inspection technology training and counseling
7. Regular channel sediment monitoring and environmental protection policy coordination

1. Reservoir and pond management
2. Annual maintenance engineering projects
3. Disaster emergency repairs
4. Construction machinery management

Determination and collection of engineering project fees and various other fees, real estate claim management and annual financial planning, allocation and diversification-related operational matters

1. Association owned real estate management
2. Irrigation land purchase
3. Association owned land disposal
4. Association owned land registration and cadastral management
5. Land tax
6. Cadastral surveying and storage of survey maps
7. Association owned land and management of rented pools
8. Association owned land leasing, lending and leasing of public and private land
9. Disposal of timber, fish and other products

1. Assessing and collection of various fees
2. Arrears clearance
3. Reviewing receipts and accounts
4. Auditing of collection operations
5. Other related operational matters
6. Formulating financial plans
7. Management of subsidy loans
8. Financial allocations

Office work related to documents, cashier, and general affairs, agency seal management etc.

1. Word processing
2. File management
3. Research development
4. Citizen Services work
5. Annual center work plan
6. Annual center work plan, control and evaluation
7. Data management
8. Meetings
9. Dedicated case control and evaluation
10. Control of deadlines for processing membership applications
11. Official document queries
12. Confidential document processing
13. Telecommunications processing
14. Laws and regulations

1. Customized purchase procedures for articles and property (except land, buildings and equipment) and materials
2. Article management
3. Property management (limited to water, land transportation equipment and miscellaneous design)
4. Material management
5. Office premises management
6. Dormitory management
7. Vehicle management
8. Ship management
9. Gathering management
10. Other matters

Cashier management

Preparing annual budgets and final accounts, review accounting documents and statistics etc.

1. Budget preparation
2. Budget execution
3. Preparation of final accounts (retaining information on accounts receivable and payable)
4. Supervision of renovation engineering projects and property purchases
5. Research and discussion on improving financial efficiency and reducing uneconomical expenditure
6. Review of accounting documents
7. Contract reviews
8. Other budgeting matters

1. Accounting system research and improvement
2. Preparation of accounting documents
3. Accounting registration
4. Accounting report preparation
5. Accounting file organization
6. Preparation of final accounts
7. Clearance of pre-appropriated funds (receipts) and advance payments (temporary collections)
8. Review of valuation and depreciation of property and equipment
9. Audit matters
10. Other accounting matters

Employee recruitment, assessment and other matters.

1. Institutional organization
2. Staff complement
3. Stratified responsibility
4. Exam selection_
5. Recruitment, dismissal and transfer
6. Grade salary review
7. Manpower planning
8. Work streamlining
9. Proof of service
10. Personnel regulations
11. Personnel information

1. Daily assessment
2. Work assessment
3. Performance assessment
4. Rewards, punishments and praise
5. Reinstatement from suspension
6. Leave management
7. Training and further education
8. Oversea observation trips
9. Employee guarantees
10. Benefits and allowances
11. Welfare mutual aid
12. Subsidized housing
13. Labor insurance
14. National Health Insurance
15. Recreational activities
16. Retirement, severance
17. Employee survivors' benefits
18. Employee overtime work
19. Personnel meeting report
20. Personnel data

Integrity promotion operations, maintenance of official confidentiality, organization security protection, investigation and processing of civil service ethics etc., accepting petitions on member related cases, and assisting in processing irrigation disputes

1. Integrated operations
2. Promotion of operational integrity and legal common knowledge
3. Maintenance of official confidentiality

1. Maintaining organization security maintenance
2. Investigation of civil service ethics conduct

1. Planning, supervision, coordination, review and management of information operations
2. Management and maintenance of information software
3. Information application education training and counseling services
4. Data management

1. Planning, formulation and execution of solar photovoltaic operations
2. Compilation and reporting of solar photovoltaic related operating data
3. Development and submission of proposals for amendments to solar photovoltaic-related regulations
4. Planning, formulation and execution of small-scale hydropower operations
5. Compilation and reporting of operating data related to small-scale hydropower operation
6. Development and submission of proposals for amendments to regulations related to small-scale hydropower operations
7. Calculation and collection of feedback funds

1. Office operations reports
2. Collecting information on office operations
3. Receiving guests
4. Office activities
5. Proposals on improving office operations