I now have it "working" using two types of sensors. I have a float sensor which just gives me a binary on/off. This works fine and would probably do what I need. Bonus for it being made for wet ...

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 ...

Nirchhari, the sensor for remote monitoring of water level, is operational at Peppara and Aruvikkara dams for the past three months. Originally developed to check level of sewage in sewer lines ...