Field measurement · January 30, 2026 · Pasi Pajula

My dream sewer manhole

A sewer manhole with open-channel wastewater flow

It may not be very common to dream about wastewater sewer manholes, but today we will. For us at Preventos, sewer manholes are essential for providing data-driven sewer network management to our customers. The quality of raw data and the resulting data analysis depends greatly on the characteristics of the manhole chosen for measurement. I dream of a saddle manhole through which water flows as a well-developed open-channel flow. The flow cross-section remains unchanged at and near the manhole.

The direction and slope of the sewer also remain consistent at the manhole. What kind of sewer manhole do you dream of?

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