Soil Moisture Sensors
By comparing rainfall (green section) to soil moisture readings (pink section) one can see how rainfall impacts soil moisture over time around the Infiltech device to get an understanding for how the Infiltech® system of devices works. The 12", 24", and 36" columns represent sensor depths in a sensor stack (multiple sensors placed directly over or under each other below ground). The three left pink sections are one stack, A, and the right three pink sections are one stack, B. From this data we can understand vertical and transverse movement of water below ground. If we also look at sensor stacks placed farther left or right of these stacks we can interpret longitudinal flow. This allows for comparison and insights into how water is moving around a site.
Ultrasonic Level Sensors
The volume of water managed by an Infiltech® system can be determined through the use of an ultrasonic level sensor that has been installed with and calibrated for a particular drainage basin. The sensor records the depth of water in the drainage basin. Data from a tipping rain gauge on site and the size of the contributing area the rain falls on, provide the volume of water entering the system. The calibrated drainage basin, with an overflow weir, and the ultrasonic level sensor, provide the volume of water overflowing the weir and the volume of water entering the Infiltech® system.