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Lecture 19 - Water Resources Engineering g g Lecture 19...

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Water Resources Engineering - Lecture 19 Prepared by T Wagener & P Reed 1 Prepared by T. Wagener & P. Reed Penn State University
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Hydrologic Processes 2
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Reservoir and Streamflow Routing [Rapidan River] 3
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Content 1 Routing 1. Routing 2. Hydrologic Reservoir Routing L l l ti Level pool routing 3. Hydrologic River Routing Muskingum method 4. [Hydraulic (Distributed) Routing] 4
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Routing 5
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Routing Flow routing is the procedure to determine the time and magnitude of flow at a point on a watercourse from known or assumed hydrographs at one or more points upstream. 6
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Hydrologic (Lumped) Routing I(t) ( ) ( ) dS I t Q t = The continuity equation (above) dt The continuity equation (above) describes the relationship between input I, output Q and storage S as functions of time. S(t) Even if we measure I, we still need a second equation to tell us how Q and S are related i e we need a Q(t) and S are related, i.e. we need a storage function, S = f ( Q ) 7
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Hydrologic Reservoir Routing 8
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Hydrologic Reservoir Routing R i ff ti Reservoirs are an effective tool in flood control because of their large storage capacity.
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