Auxiliary Spillways: Difference between revisions
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<noautolinks>==Best Practices Resources==</noautolinks> | <noautolinks>==Best Practices Resources==</noautolinks> | ||
{{Document Icon}} [[Design Standards No. 14: Appurtenant Structures for Dams (Ch. 3: General Spillway Design Considerations) | Design Standards No. 14: Appurtenant Structures for Dams (Ch. 3: General Spillway Design Considerations), USBR | {{Document Icon}} [[Design Standards No. 14: Appurtenant Structures for Dams (Ch. 3: General Spillway Design Considerations) | Design Standards No. 14: Appurtenant Structures for Dams (Ch. 3: General Spillway Design Considerations), USBR]] | ||
{{Document Icon}} [[Technical Release 210-60: Earth Dams and Reservoirs | Technical Release 210-60: Earth Dams and Reservoirs, NRCS | {{Document Icon}} [[Technical Release 210-60: Earth Dams and Reservoirs | Technical Release 210-60: Earth Dams and Reservoirs, NRCS]] | ||
{{Document Icon}} [[National Engineering Handbook: Chapter 21 - Design Hydrographs | National Engineering Handbook: Chapter 21 - Design Hydrographs, NRCS | {{Document Icon}} [[National Engineering Handbook: Chapter 21 - Design Hydrographs | National Engineering Handbook: Chapter 21 - Design Hydrographs, NRCS]] | ||
{{Document Icon}} [[Engineering Guidelines for the Evaluation of Hydropower Projects: Chapter 2- Selecting and Accommodating Inflow Design Floods for Dams | Engineering Guidelines for the Evaluation of Hydropower Projects: Chapter 2- Selecting and Accommodating Inflow Design Floods for Dams, FERC | {{Document Icon}} [[Engineering Guidelines for the Evaluation of Hydropower Projects: Chapter 2- Selecting and Accommodating Inflow Design Floods for Dams | Engineering Guidelines for the Evaluation of Hydropower Projects: Chapter 2- Selecting and Accommodating Inflow Design Floods for Dams, FERC]] | ||
{{Document Icon}} [[National Engineering Handbook: Chapter 50 - Earth Spillway Design | National Engineering Handbook: Chapter 50 - Earth Spillway Design, NRCS | {{Document Icon}} [[National Engineering Handbook: Chapter 50 - Earth Spillway Design | National Engineering Handbook: Chapter 50 - Earth Spillway Design, NRCS]] | ||
{{Document Icon}} [[Selecting and Accommodating Inflow Design Floods for Dams (FEMA P-94) | Selecting and Accommodating Inflow Design Floods for Dams (FEMA P-94), FEMA | {{Document Icon}} [[Selecting and Accommodating Inflow Design Floods for Dams (FEMA P-94) | Selecting and Accommodating Inflow Design Floods for Dams (FEMA P-94), FEMA]] | ||
{{Document Icon}} [[Hydraulic Design of Spillways (EM 1110-2-1603) | Hydraulic Design of Spillways (EM 1110-2-1603), USACE | {{Document Icon}} [[Hydraulic Design of Spillways (EM 1110-2-1603) | Hydraulic Design of Spillways (EM 1110-2-1603), USACE]] | ||
{{Document Icon}} [[Design of Small Dams | Design of Small Dams, USBR | {{Document Icon}} [[Design of Small Dams | Design of Small Dams, USBR]] | ||
==Trainings== | ==Trainings== | ||
Latest revision as of 19:34, 11 July 2023
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| Learn more about the importance of spillway design criteria at DamFailures.org |
“An auxiliary spillway is infrequently used and may be a secondary spillway (augmenting a service spillway discharge capacity). During operation there could be some degree of structural damage or erosion to the auxiliary spillway due to releases up to and including the maximum design discharge. Auxiliary spillways may be less robust, erosion-resistant structures consisting of some cast-in-place reinforced concrete, riprap channel protection and/or unarmored excavated channels”.[1]
In the past, auxiliary spillways were commonly referred to as " emergency spillways". This practice should be discontinued. Media references to flow through “emergency spillways” often leads to a misconception by the public that an emergency condition exists at a dam when the dam is safely functioning as designed. [2]
Life Cycle of Auxiliary Spillways
Examples
Learn more about the importance of spillway design criteria at DamFailures.org
Best Practices Resources
Technical Release 210-60: Earth Dams and Reservoirs, NRCS
National Engineering Handbook: Chapter 21 - Design Hydrographs, NRCS
National Engineering Handbook: Chapter 50 - Earth Spillway Design, NRCS
Selecting and Accommodating Inflow Design Floods for Dams (FEMA P-94), FEMA
Hydraulic Design of Spillways (EM 1110-2-1603), USACE
Trainings
On-Demand Webinar: Introduction to Addressing Inadequate Conveyance Capacity at Dams
On-Demand Webinar: Inspection and Assessment of Spillways
On-Demand Webinar: Inlet and Outlet Hydraulics for Spillways and Outlet Structures
Citations:
Revision ID: 7136
Revision Date: 07/11/2023