Micromonitoring apparatus and method

An apparatus and method for monitoring sanitary sewer systems designed to carry away wastewater through a system of buried pipes, often referred to as "sewer lines", to a sewage treatment facility, the apparatus and method use a weir which facilitates the collection of flow rate data in the sewer lines which in turn facilitates the determination of infiltration and inflow ("I/I") of rain water, or clear water, into the sewer system in a manner which further allows the identification of specific I/I locations so that repair and construction of sewer systems can be efficiently coordinated.