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Simple Steps to Siphoning: Difference between revisions

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This article discusses a practical approach to the design and implementation of siphons – specifically applicable to small-dam owners and operators. Many older dams were not constructed with an outlet or other means of draining the reservoir. Lowering the reservoir may be needed for temporary construction or for emergency response. Siphons can be a low-cost means of providing a reservoir outlet if one does not exist.
This article discusses a practical approach to the design and implementation of siphons – specifically applicable to small-dam owners and operators. Many older dams were not constructed with an outlet or other means of draining the reservoir. Lowering the reservoir may be needed for temporary construction or for emergency response. Siphons can be a low-cost means of providing a reservoir outlet if one does not exist.


This short article was published in Vol. 1, Iss. 1 of the Western Dam Engineering Technical Note (WDETN) and describes considerations for design and construction of a siphon outlet at a dam.  The WDETN was a collaborative effort between the states of Colorado, Montana, New Mexico and Wyoming which was made possible by the FEMA National Dam Safety Program state assistance grants.  Special thanks to URS for authoring the article.
This short article was published in Vol. 1, Iss. 1 of the Western Dam Engineering Technical Note (WDETN) and describes considerations for design and construction of a siphon outlet at a dam.  The WDETN was a collaborative effort between the States of Colorado, Montana, New Mexico and Wyoming which was funded by the FEMA National Dam Safety Act Assistance to States grant program.  Special thanks to URS Corporation in Denver, Colorado for authoring the article.
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Latest revision as of 23:57, 26 January 2026

URS Corp., March, 2013



This article discusses a practical approach to the design and implementation of siphons – specifically applicable to small-dam owners and operators. Many older dams were not constructed with an outlet or other means of draining the reservoir. Lowering the reservoir may be needed for temporary construction or for emergency response. Siphons can be a low-cost means of providing a reservoir outlet if one does not exist.

This short article was published in Vol. 1, Iss. 1 of the Western Dam Engineering Technical Note (WDETN) and describes considerations for design and construction of a siphon outlet at a dam. The WDETN was a collaborative effort between the States of Colorado, Montana, New Mexico and Wyoming which was funded by the FEMA National Dam Safety Act Assistance to States grant program. Special thanks to URS Corporation in Denver, Colorado for authoring the article.


Document Download:

March, 2013 (current)


Errata/Special Notes:

None



Revision ID: 8305
Revision Date: 01/26/2026