Adam Ward, an assistant professor at the University of Iowa, is crowd-sourcing hydrologic data.
Signs near each stream ask people who pass by to read the ruler and text in the water level. It then goes in to the database at crowdhydrology.org.
The gauges are installed at Ralston Creek, as well as the Iowa City Environmental Center, and the Ciha Fen Preserve, but are a part of a larger network across the Northeastern United States.
To learn more about the stream gauge network and Ward’s research work, click here.