Register  |  Login

The Stormwater Blog 

Contech Stormwater experts discussing Low Impact Development, Onsite Water Management, Rainwater Harvesting and all things Stormwater.

Is Green Infrastructure Diminishing Innovation?

By Derek Berg  |  Monday, April 07, 2014  |  943 Views
Is Green Infrastructure Diminishing Innovation?
Since the Environmental Protection Agency, and in turn state and local regulators, have gone all in on green infrastructure (GI) and low impact development (LID) concepts a seemingly regrettable consequence has emerged.  Topics specific to the broader adoption and implementation of GI have monopolized our collective dialog on stormwater management of late.   The predominantly positive press and barrage of GI heavy conference agendas seemingly suggest that if we apply GI far and wide then water quality impairments caused by urban runoff will soon be a thing of the past.  GI provides stormwater practitioners with invaluable tools to aid in the stormwater fight, but many site specific challenges can’t be surmounted with GI solutions alone.  To that end, should we be concerned that overemphasis on GI is discouraging innovation?
Categories Regulations, Treatment

Three Maintenance Tips For Your Rainwater Harvesting Cistern

By Kathryn Thomason  |  Thursday, March 06, 2014  |  1299 Views
Three Maintenance Tips For Your Rainwater Harvesting Cistern
All stormwater systems need to be maintained to continue operating effectively, and rainwater harvesting (RWH) is no exception. Unfortunately, many owners do not care that their stormwater BMP is not functioning due to lack of maintenance. Maintenance of RWS systems is critical for owners that depend on their continued operation and associated utility savings. Proper maintenance of a RWH cistern helps protect water quality and ensure system performance.

Why Pretreat Your Stormwater Infiltration System?

By Hannah Schlachter  |  Tuesday, February 11, 2014  |  1011 Views
Why Pretreat Your Stormwater Infiltration System?
Hands down, the most important factor in the sustainability of any infiltration system is proper maintenance. By their very nature, infiltration systems are difficult to inspect and maintain. The selection of a cost-effective and easy-to-access treatment system can mean a huge difference in maintenance expenses for years to come.
Categories Detention, Maintenance

Four Rainwater Harvesting Cistern Design Considerations

By Kathryn Thomason  |  Monday, January 06, 2014  |  1260 Views
Four Rainwater Harvesting Cistern Design Considerations
Rainwater Harvesting does not have a long history of use in modern site design, but now that it is a topic of interest, many engineers have questions about this new practice. Many of these questions center on cisterns, which are at the heart of every rainwater harvester system. This post looks at four rainwater harvesting cistern design considerations – sizing, design life, structural capacity and installation.

Thinking Outside The Box: Infiltration System Layouts

By Duane Herring  |  Monday, December 09, 2013  |  1967 Views
Thinking Outside The Box: Infiltration System Layouts

Historically, underground infiltration beds have been laid out in either square or rectangular shapes, sometimes far away from where the actual rain drops fall. These large systems are typically fed by a series of upstream catch basins and conveyance pipes. Several factors contribute to site layout, but mostly it simplifies the hydrologic and hydraulic modeling process, and keeps infiltration beds away from more sensitive underground infrastructure.

Leaves, Trees, and Stormwater BMPs: Designing with Maintenance in Mind

By Sean Darcy  |  Tuesday, November 05, 2013  |  1426 Views
Leaves, Trees, and Stormwater BMPs: Designing with Maintenance in Mind

Preserving large trees as runoff interceptors is an integral part of low impact development as well as incorporating trees and vegetation in filtration beds, rain gardens, and bioretention systems. These systems are extremely beneficial and provide essential functions of the natural landscape: infiltration, evaporation, transpiration, interception, and shading.

Depending on the type of tree or vegetation retained on-site or planted within the facility there is a different type of load released throughout the year….organic matter. Organic matter for a green field is extremely beneficial as the load can easily be assimilated, allows for decomposition, and provides essential nutrients for soil and nourishment for future vegetation. Organic matter for a stormwater facility can be beneficial, but also can increase excessive nutrient loads that cannot be assimilated, block inlets, blind surface beds, alter flow paths, and change percolation rates through the soil.

Eight Benefits of Stormwater Treatment Trains

By Hannah Schlachter  |  Thursday, October 10, 2013  |  1975 Views

Traditional stormwater criteria require both improving the quality and managing the quantity of runoff. One of the best practices is to incorporate pretreatment, detention and treatment into an integrated system. This approach can meet total daily maximum load requirements by providing a high level of pollutant removal and preventing erosion damage from peak flows. Many areas may require only some of these processes while some areas may require all of them. Here are eight benefits of using this three-tiered approach to stormwater treatment:

Stormwater Infiltration: Drain-Down Characteristics of Hydrologic Soil Groups

By Vaikko Allen  |  Friday, August 30, 2013  |  1996 Views
Stormwater Infiltration: Drain-Down Characteristics of Hydrologic Soil Groups

Infiltration plays an increasingly important role in meeting stormwater runoff mitigation regulations. One of the primary considerations for infiltration feasibility is the runoff routing. Infiltration systems must drain in a reasonable amount of time to avoid creating mosquito habitat and to recover storage volume for subsequent storms.

Categories Infiltration

Comparison of Materials Choices for Rainwater Harvesting Cisterns

By Kathryn Thomason  |  Wednesday, August 14, 2013  |  1307 Views
Comparison of Materials Choices for Rainwater Harvesting Cisterns

There are a wide variety of cistern materials to choose from. Because they are often smaller in size, residential systems offer more options, but not all will scale to tens of thousands of gallons in a cost-effective manner. This article focuses on commercial and institutional scale projects where storage requirements are thousands of gallons and larger.

Structural Considerations for Stormwater Control Measures

By Jim Lenhart  |  Thursday, July 11, 2013  |  790 Views
Structural Considerations for Stormwater Control Measures

As the need for effective stormwater treatment and volume control grows, so does the number of available stormwater control measures (SCMs) such as filtration systems, hydrodynamic separators, bio-retention systems, green roofs and pervious pavement. As part of their due diligence, engineers go through an evaluation process to determine if the proposed system will meet some basic criteria, one of which is structural considerations. 

«« First « Previous |1 2 3 4 5 6 | Last ››

Leave a greener footprint on your site