Minnegang Creek Flood Study Report - Wollongong City Council

hydraulicshydrographhydrologyMIKE 11peak dischargeterm given to the study of water flows inwaterways; in particular, the evaluation of flowparameters such as water level and velocity.a graph which shows how the discharge orstage/flood level at any particular locationchanges with time during a flood.term given to the study of the rainfall andrunoff processes; in particular, the evaluationof peak flows, flow volumes and the derivationof hydrographs for a range of floods.the unsteady one dimensional hydraulic modelused for this study.the maximum discharge occurring during aflood event.Probable Maximum Flood (PMF) the largest possible flood that couldconceivably occur at a particular location. ThePMF defines the extent of flood prone land, iethe floodplain.Probable Maximum Precipitation (PMP)RAFTSRatHGLrunoffstagethe greatest depth of precipitation for a givenduration meteorologically possible over a givensize storm at a particular location at a particulartime of the year, with no allowance made forlong-term climatic trends. It is the primaryinput to the estimation of the probablemaximum flood.the hydrologic model used for this study(Runoff Analysis & Flow TrainingSimulation).urban stormwater drainage piped networkanalysis and design program used to analysethe pipe system for this study.the amount of rainfall which actually ends upas streamflow.equivalent to water level. Measured withreference to a specified datum.SV8507-DO-001 Rev 2 B-218/10/02