Tag: rock check dam

Check dams reduce scour and channel erosion by reducing flow velocity and encouraging sediment settlement . A check dam is a small device constructed of rock, gravel bags, sandbags, fiber rolls, or reusable other proprietary product placed across a natural or man-made channel or drainage ditch.

Putting the Brakes on Silt – Part 2

Putting the Brakes on Silt – Part 2

“For years, a crew would have to come out to a job site and install SiltSoxx in the field with big blower trucks,” says Zock. “Some people didn’t like that, and sometimes it was hard to get scheduled. That’s all changed.”

Filtrexx still has professionally certified teams all over the United

New Angle(s) on Sediment Control

New Angle(s) on Sediment Control

When the Tennessee Department of Transportation decided to improve a 4-mile stretch of Interstate 65, project manager Todd Cheek of Mid-TN Erosion was called in to assist with sediment control issues. As he describes the project, “It is the grading, drainage, and construction of a concrete I-beam bridge, a concrete

New Angle(s) on Sediment Control

New Angle(s) on Sediment Control

When the Tennessee Department of Transportation decided to improve a 4-mile stretch of Interstate 65, project manager Todd Cheek of Mid-TN Erosion was called in to assist with sediment control issues. As he describes the project, “It is the grading, drainage, and construction of a concrete I-beam bridge, a concrete

Long-Term Field Performance of Various Passive, Construction Sediment Control BMPs

Historically, long-term performance data for construction stormwater best management practices (BMPs) have been virtually nonexistent. The performance data that do exist are primarily associated with short-term performance test protocols using single pass-through flows through passive sediment control BMPs. A better understanding of long-term performance for construction BMPs is essential, as

Keeping Tabs on the H2O

Keeping Tabs on the H2O

Water monitoring has a wide variety of applications, from determining amounts of foreign matter in potable water supplies to diagnosing the long-term health of an ocean or a marsh. State and federal officials must be concerned about runoff, as governing bodies negotiate with private concerns to develop guidelines and regulations.

Public Education and Outreach

Public Education and Outreach

As they tackle the NPDES Phase II measure of public education and outreach, stormwater managers are working against the backdrop of many larger social issues, from the problem of the homeless in urban areas to the economic situation and the resulting lack of funding. However, successful efforts abound, often rooted

Inlets: Collect Water, Nothing Else

Inlets: Collect Water, Nothing Else

In a perfect world, all your jobs would go smoothly. None of your crew would get sick, no equipment would break down, and all needed supplies would arrive on time, in good condition. Most importantly, the weather would cooperate; there wouldn’t be a drop of rain until all earthmoving was

Putting the Brakes on Silt

Putting the Brakes on Silt

When it comes to versatility, erosion control contractors rely on silt fence and wattles-or other rolled or berm-shaped filtration products-as the workhorses of a job site. They are used as sediment barriers, as check dams to slow the flow of water and sediment (placed perpendicular to the downhill flow of

Stormwater Quality Sentries

Stormwater Quality Sentries

An often-overlooked nonpoint source of stormwater pollution is roadside ditches. They can collect a wide range of pollutants from fecal coliform bacteria to petroleum hydrocarbons to heavy metals from roads, parking lots, and construction sites and transfer them to watersheds. The King County, WA, Department of Transportation Roads Maintenance Section

North Griffin Regional Detention Pond: Wetlands Filtration and Treatment for Nonpoint-Source Pollution Control and Abatement

The National Pollutant Discharge Elimination System (NPDES) Phase II stormwater permits now force hundreds of communities throughout the nation to look differently at how they manage their stormwater programs. These programs will undertake various approaches to reduce nonpoint-source pollutant loadings to impaired water bodies in an effort to achieve Phase

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