**4. Conclusions**

The results explained that the pH value and water level elevation increased as a result of the rainfall and became the basis for optimizing the operation and maintenance of the Dadahup Irrigation network by utilizing a telemetry monitoring system.

**Author Contributions:** Conceptualization, A.Z.; methodology, A.Z.; formal analysis, A.Z.; investigation, A.Z.; resources, A.Z.; data acuration, A.Z.; writing—original draft preparation, A.Z.; writing—review and editing, A.Z.; visualization, A.Z.; supervision, A.Z.; project administration, A.Z.; funding acquisition, A.Z. All authors have read and agreed to the published version of the manuscript.

**Funding:** This research was supported by Directorate General of Water Resources Ministry of Public Works and Housing and Department of Civil Engineering and Environmental Engineering, Faculty of Engineering, Universitas Gadjah Mada, Yogyakarta.

**Institutional Review Board Statement:** Not applicable.

**Informed Consent Statement:** Not applicable.

**Data Availability Statement:** Data are available from corresponding author.

**Acknowledgments:** The author would like to thank all those who have supported the completion of this paper.

**Conflicts of Interest:** The author declares no conflict of interest.
