Obtaining accurate rainfall measurements is essential for any infiltration and inflow (I/I)
modeling study as these measurements are primary inputs into the development of the hydrologic model used to evaluate the wet weather flows in the system. In the course of performing flow monitoring for an I/I modeling study, it is not uncommon to experience intermittent rain gauge failures during a flow monitoring period without significant consequence, as these failures rarely
occur during large storm events. However, such a rain gauge failure occurred during the flow
monitoring period for the 2008 Scio Township I/I Modeling Study, and this failure was of
significant consequence as it occurred during the largest storm event of the flow monitoring
period. In most cases, even if the rain gauge failure had been identified, the storm event would
have to be removed from the analysis due to the errant rainfall measurement; however, the
comprehensive approach used for the 2008 Scio Township I/I Modeling Study included using a highly accurate hydrologic model to identify the rainfall measurement error and radar
reflectivity data to correct the error. This allowed the use of the largest storm event to guide in the
development of the hydrologic model despite the rain gauge failure.
Clipping is a handy way to collect important slides you want to go back to later.