The city of Conway is getting new technology to help residents and businesses when water levels start to rise. During ...

The City of Conway has taken a significant step in flood prevention by approving the installation of new water level sensors ...

As the top sensor goes low (water above level C), the CLR signal is activated and the output of the flipflop is low. This allows Q1 to turn on and activate a triac or relay for the pump.

By analyzing those patterns, an onboard Raspberry Pi microcomputer is able to determine the current water level to within an accuracy of plus or minus ~1.5 cm (0.6 in).