Tag: channel protection

CHANNEL PROTECTION—CHECK DAMS. Refer to: ITD Standard Specifications, Section 212. ITD Standard Drawing P-2-B. Definition and Purpose. A check dam is a small dam constructed in an open channel, swale, or drain way to reduce or prevent excessive bank and bottom erosion by reducing the gradient or runoff velocity.

Mats, Concrete, Blocks, and Rocks: The Lowdown on Riprap

Mats, Concrete, Blocks, and Rocks:
The Lowdown on Riprap

This article first appeared in the July/August 2002 issue of Erosion Control.

Since the beginning of time, people have found ways to use rocks as tools. The first rock tools probably were used for hunting. The use of rocks to help reinforce ditches probably was not seen until irrigation agriculture had been

Reversing the History of Urban Hydrology

Can we reverse the impacts that urban areas have on our surface waters? And can it be done economically? It is expected that the country will see increasing difficulty in accessing adequate quantities of clean water unless well-laid plans are followed to preserve and protect it. Stormwater professionals will play

Reversing the History of Urban Hydrology

Can we reverse the impacts that urban areas have on our surface waters? And can it be done economically? It is expected that the country will see increasing difficulty in accessing adequate quantities of clean water unless well-laid plans are followed to preserve and protect it. Stormwater professionals will play

Green Infrastructure Sizing Criteria Development

It was the early 1950s and Johnny, who came marching home, wanted a two-bedroom ranch in a tidy neighborhood. From a stormwater (OK, “drainage”) perspective, “tidy” meant efficient drainage with curbed streets. The Rational Method was king. Calculate the 10-year peak flow. Size a pipe to get it to a

Not Simpler Than Possible

Not Simpler Than Possible

Einstein (the first superstar recognized by just one name) said, “Everything should be made as simple as possible, but not simpler.” This is sage advice for us all as we are about to embark on a national sausage-making discussion concerning the appropriate standard(s) to use for the control of stormwater

Stabilizing the Stream

Stabilizing the Stream

Many techniques are available to stem erosion of streambanks, to prevent flood damage, and to help restore the natural function of a stream or creek. This article looks at several different examples. Underwood Creek Located in metropolitan Milwaukee, Underwood Creek is a major tributary of the Menomonee River. Dale Miller,

Volume-Based Hydrology

Volume-Based Hydrology

“If everybody is thinking alike then somebody isn’t thinking.” – General George Patton

Every 20 years or so, urban stormwater practitioners seem to stop and take stock of how we are doing. Sixty years ago, we figured that efficient drainage was the way to do things, using separate stormwater systems

Research and Testing of ESC Products and Methods

A common complaint among people who specify, purchase, and install erosion and sediment control devices is the difficulty of comparing the performance of different products and techniques. Although test data are available for many products-some from testing performed by independent laboratories and universities, some from the product manufacturers themselves-test procedures

Choices in Channel Protection

Rushing waters eating away at road embankments or undermining bridge pillars is not a pretty sight. Preventing these disasters is often the job of an erosion control contractor, and the availability and variety of tools for the job are incredible. If you have a bank stabilization project, how do you

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