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GEOWEB Benefits for Stormwater Channels
- Root systems “lock in” to the cell wall perforations to support vegetation in intermittent channels. GEOWEB protection can offer substantially greater resistance to erosion and washouts compared to unprotected drainage channels.
- When combined with an overlying TRM for vegetated channels, the GEOWEB/TRM system can withstand velocities up to 30 ft/sec.
- Rock confined in the GEOWEB structure allows the substitution of a smaller, easier-to-handle aggregate. This results in project time and cost savings, when compared to hard-to-acquire larger rip-rap or cumbersome gabions.
- Concrete systems conform well to the subgrade soils, accommodating significant differential settlement. This is accomplished through the system’s inherent high FLEXIBILITY.
- The GEOWEB solution reduces the cross-section 50% or more compared to reinforced concrete.
GEOWEB Benefits Compared to Rip-Rap or Gabions
- Offers Natural Green Aesthetics. As a single layer on a slope with a TRM, or in stacked configuration, GEOWEB vegetated channels are green solutions compared to rip rap or wire rock fascia gabions.
- Invisible Once Vegetated. The GEOWEB system is essentially invisible once vegetation is established. The open-celled system infiltrates stormwater.
- Flexible, Conforms to Landscape. GEOWEB sections are flexible and conform well to hillsides and stream curves.
- Diverse Design Flexibility. GEOWEB channels can be designed with a variety of infills to meet site conditions, including topsoil, aggregate or concrete. Gabion walls are infilled with large stones, and have limited design flexibility.
- Made from Non-Corrosive Material. HDPE GEOWEB material does not corrode and is stable and inert, maintaining its strength for over 100 years. Gabions are prone to corrosion, even if galvanized.
- Keeps Strength, Accommodates Settlement. GEOWEB channels are flexible systems that maintain their strength even when confronted with differential settlement. Poured concrete, gabions, and other semi-rigid systems may fail over time due to settlement.
- Use Local Fill, Not Large Rocks / Rip-Rap. Compared to rip rap and gabions, GEOWEB tiered channels may use locally available or on-site fill, saving on cost to transport larger rock and reducing impact to the neighborhood and the environment.
- No Heavy Equipment Required. Light-weight GEOWEB sections are easy to transport, deploy and install. Gabions, rip rap, and poured concrete require large equipment.
GEOWEB Stormwater Channel Resources
GEOWEB Channel Overview-Español
Attributes & Performance
GEOWEB Specification Summary-Español
Plan & Build