R147 – Low and High Friction hydrographs upstream Zone 4

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Upstream Zone 4: the low and high friction hydrographs are indicative of increased ‘green’ storage (red oval).
(Long profiles, flood water depth against time, are being compared for low and high friction landuse. Five high friction zones are being imposed on a 24hour 25cumec event. Gauge stations are set up in software upstream (U) and downstream (D) of the friction zones.)

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