WaterLevelControl

<iframe width="450" height="260" style="border: 1px solid #cccccc;" src="https://thingspeak.com/channels/2542510/charts/1?bgcolor=%23ffffff&color=%23d62020&dynamic=true&results=60&timescale=30&title=Diagram&type=line&xaxis=time&yaxis=water"></iframe>

<iframe width="450" height="260" style="border: 1px solid #cccccc;" src="https://thingspeak.com/channels/2542510/widgets/859425"></iframe>