A low-cost (~$100), do-it-yourself (DIY) ultrasonic water level sensor/datalogger has been designed, constructed, and tested for use in education, citizen/community science, and research settings. The ...

Thiruvananthapuram: During monsoons and drought seasons, Kerala water authority (KWA) officials have to make calls to Peppara and Aruvikkara to get updates about dam level. And in areas like Peppara, ...