In the inflow and infiltration business, depth is the key to flow measurement success.
It is important to recall that no open-channel flowmeter on the face of the earth measures flow. They all measure depth and velocity and then calculate a rate of flow. In the last issue, we discussed the importance of reviewing meter data in a scattergraph format to understand the hydraulic condition in a sewer, and in this article, we will examine how the scattergraph can be used to...