The Scope of Underflow and Overflow Dams | MyPaperHub

An underflow dam unit provides a barricade to pollutants suspended in runoff water which otherwise finds a way through streets and streams. They use leaning culverts to allow water which is moving downstream to run off while keeping the spill well contained. The dam unit includes a dam sandwiched between limiting side walls above the dam. The baffle’s lower limit extends below the height of the dam forming a waterway between the baffle and the dam. Floating pollutants become ensnared against the baffle while hydraulic pressure allows subsurface stream water to flow the barrier channel and over the dam.

Overflow dams carry water discharge over their crests and are made of materials not easily eroded by the discharges, therefore, allowing water to flow over from its top and afterward down to its front face. The dam sometimes acts as an overflow spillway. They consist of a mass so heavy that the reservoir's water cannot push the dam downstream (thicker at the base than the top). Horizontal pressure on the dam is exerted as the water becomes deeper. Overflow spillways are constructed where there is intense pressure as compared to underflow spillways which cannot withstand massive pressure on the dam tipping it over.

 

 

 

 

REFERENCES

Conrad J. D. (1997) Geomorphic Effects of Overflow Dams. Brookfield, VT: Ashgate

Kyle E. J. (1999) The Free Flow and Submergence Of Underflow Dams. U.S. Geological Survey

Additional articles

Year Round Schooling

The issue of year round schools has for a long time been hotly debated over the past few years. While many students are spending time at home or on trips with their families, some are in school learning all summer long. According to Pierson (1), t...Year-Round-Schooling …

Read Article
Flannery O'Connor's Message On Religion

Flannery O’Connor addresses the theme of religion in some of his stories. The short stories “Good Country People” and “The Life You Save May Be Your Own” represent the Christian identities that are seen in many of the fictions written by...Flannery-O'Connor's-Message-On-Religion …

Read Article
Virtual Technology.

     The term virtualization refers to running a program in virtual storage to stimulate the effect on a computer including computer hardware platforms, storage devices, and computer network systems. In the early 1960’s, virtualiz...Virtual-Technology. …

Read Article
Let's give your paper the attention it deserves