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This scattergraph displays data from a flow monitor installed in a 21-in trunk sewer. During wet weather, backwater and surcharge conditions are observed in a distinct manner referred to as hydraulic hysteresis.

Certain religious practices can also be observed in sewer use patterns. This composite hydrograph shows normal dry weather flow patterns from a flow monitor located in a region with a prominent Orthodox Jewish population.

Holidays are welcomed diversions from everyday life and provide time to celebrate and relax with family and friends. These diversions are reflected in sewer use patterns, as shown below.

This scattergraph displays data from a flow monitor with a drifting velocity sensor.

Most flow monitoring data can be described by the Manning Equation using either the Design Method, the Lanfear-Coll Method, or the Stevens-Schutzbach Method.

The Design Method is a traditional use of the Manning Equation and requires information regarding the roughness coefficient (n) and the pipe slope (S).

The scattergraph depicted here reveals shifting debris that reduces the pipe capacity at this monitoring location.

Scattergraph data from a flow monitor installed just upstream from a CSO regulator where dry weather flows are funneled into a 54-in sewer but flow depth exceeding 28 inches is carried over a side weir.

Flow monitoring data provide a means to determine the duration and volume of a combined sewer overflow (CSO).