Reservoir Routing
“This procedure derives the outflow hydrograph from a reservoir from the inflow hydrograph into the reservoir with consideration of elevation, storage, and discharge characteristics of the reservoir and spillways. The conservation of mass equation is solved with the assumption that outflow discharge and volume of storage are directly related.” [1]
“For reservoirs, the relation of surface area and release capacity to storage content must be described. Characteristics of the control gates on the outlets and spillway must be known in order to determine constraints on operation. The top-of-dam elevation must be specified and the ability of the structure to withstand overtopping must be assessed.” [2].
Best Practices Resources
Technical Release 210-60: Earth Dams and Reservoirs, NRCS
National Engineering Handbook: Chapter 17 - Flood Routing, NRCS
Selecting and Accommodating Inflow Design Floods for Dams (FEMA P-94), FEMA
Hydrologic Engineering Requirements for Reservoirs (EM 1110-2-1420), USACE
Hydraulic Design of Spillways (EM 1110-2-1603), USACE
Trainings
On-Demand Webinar: Inspection and Assessment of Spillways
On-Demand Webinar: Inlet and Outlet Hydraulics for Spillways and Outlet Structures
On-Demand Webinar: Designing Spillways to Mitigate Failure Modes
On-Demand Webinar: Introduction to Addressing Inadequate Conveyance Capacity at Dams
Technical Seminar: HEC-HMS with Application to Dam Safety
Citations:
Revision ID: 7084
Revision Date: 07/11/2023