Catch Basin Donut – High Flow

Reliable Inlet Protection for High-Volume Stormwater Runoff

Protect your storm drains and catch basins from sediment, debris, and runoff-borne pollutants with our High-Flow Catch Basin Donut. Designed for construction sites, road work zones, industrial yards, and other high-traffic or heavy-runoff areas, this solution ensures effective erosion and sediment control while maintaining high flow rates to prevent ponding and flooding.

Why Choose a High-Flow Catch Basin Donut

During construction, earthworks, or any site with exposed soil, rainfall and runoff can carry sediment, soil particles, and debris into storm drains — posing environmental risks and potentially clogging drainage systems. Installing a catch basin donut captures that sediment before it enters the drainage network, helping you stay compliant with erosion-control regulations and minimizing downstream contamination.

The high-flow design means the device handles heavy rainfall and rapid inflows without impeding water movement — ideal for sites with large paved surfaces, steep grades, or heavy vehicle traffic.

Key Features & Construction

• High-flow filter fabric and foam core
  The donut uses a 4-inch open-cell foam core covered with R-2283 HDPE monofilament and high-permittivity yellow PE mesh body fabric — allowing water to pass quickly while filtering out sediment.

• Easy installation & maintenance
  The filter wraps around the grate and is secured with heavy-duty belting and buckles, making installation quick and straightforward. For maintenance, simply broom or shovel accumulated sediment away — no special tools needed.

• Re-usable design
  Once cleaned, the donut is ready for redeployment, offering economical and sustainable inlet protection for ongoing or multiple-phase projects.

• Optional winter/trash-guard cover
  For sites exposed to snow removal, grading, or heavy debris, an optional mesh guard covers the foam filter to prevent tearing and to block trash from entering overflow openings.

Specifications

• Foam cover: R 2283 HDPE monofilament fabric
• Body fabric: Yellow PE mesh high-flow fabric
• Foam height: 4″ open-cell foam
• Grate sizes (standard fit):
  24″ × 16″, 24″ × 24″, 36″ × 28″, 24″ × 48″, 36″ × 36″ — custom sizes available on request
• Permittivity (flow rate): ASTM-D-4491 — 5.84 s⁻¹
• Water flow capacity: ≥ 436 gal/min/ft²

If your site has non-standard grate sizes, or special requirements (e.g. high sediment load, heavy traffic, frequent snow removal),contact us for custom sizing and configuration options.

Where This Product Excels: Typical Applications

• Construction and development sites with exposed soil or disturbed ground
• Roadwork, highway maintenance, or heavy-traffic areas with significant stormwater runoff
• Industrial sites, parking lots, and paved areas where sediment and debris are a concern
• Projects requiring compliance with sediment-control and environmental regulations
• Temporary or permanent installations that benefit from easy maintenance and re-use

Why It Fits in Your Stormwater Control Strategy

Using a High-Flow Catch Basin Donut reduces the risk of sediment entering storm drains and catch basins — which helps prevent downstream pollution, protects aquatic habitats, and avoids costly drain cleanouts or regulatory fines. It’s a proactive, low-maintenance, and cost-effective solution that pairs well with other stormwater controls (e.g. silt fences, turbidity curtains, storm drain covers) for comprehensive site protection.

Next Steps

Need custom sizes, multiple units, or have special site requirements? Reach out to us — we’ll help you specify the right donut size, guard option, and quantity to keep your stormwater system protected while matching project needs and local regulations.

Contact West Coast Spill Supply