Definition A hydrological profile of a water resource. Description A river has a flow regime determined by geology, topography, climate and vegetation. The 5 components of a flow regime are: 1. Magnitude of discharge 2. Frequency of discharge 3. Duration of discharge 4. Timing or predictability of flows 5. Rate of change of flow: how quickly flow changes Why is a flow regime important? The flow regime determines the ecological integrity of a water resource.
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