Development and Field Testing of the Technical Implementation Unit for Lowland Automatic Water Level Recorder (AWLR BTR) for Water Level Measurement in Jejangkit Lowland Irrigation Area, South Kalimantan

Abstract

Abstract Observation of water levels using tide gauge is typically conducted by designated personnel or observers. However, its on-field implementation is deemed to be less effective due to the relatively low accuracy of readings. Additionally, hourly water level readings are necessary to generate detailed tidal patterns. Hence, Automatic Water Level Recorder (AWLR) plays a crucial role as an alternative to tide gauge. The utilization of AWLR is considered more practical, yielding more accurate reading data. Furthermore, readings can be conducted continuously, ensuring data acquisition in all conditions. The development of the AWLR BTR system involved literature reviews, software development, hardware assembly, device testing, field trials, and data comparison with the Valeport Tide Gauge. Field trials were conducted at DIR Jejangkit, South Kalimantan. The conducted trials involved operating the AWLR BTR and comparing it with the Valeport AWLR data for validation. Through calculations, the comparison of data between AWLR BTR and AWLR Valeport demonstrates similar water level values, where the average value from AWLR BTR data is 39,69 and Valeport is 39,55. Meanwhile, the Pearson correlation coefficient between the water levels of AWLR BTR and AWLR Valeport is found to be 0,9976, indicating a strong positive correlation between these two data variables.