Resource Center
Sediment Control Methods: Basins, Traps, Check Dams & Wattles
Sediment control captures soil that's already in motion, and the right method depends on drainage area, flow concentration, and available space on site.
ISA Certified Arborist (FL-9716A) · Florida Stormwater, Erosion & Sedimentation Control Inspector — FSESCI Qualified Inspector · GI-BMP Certified
Sediment Basins
Larger, engineered impoundments typically used for bigger contributing drainage areas, designed to hold runoff long enough for suspended sediment to settle before discharge. Basin sizing has to account for the full build-out drainage area, not just current-phase conditions.
Sediment Traps
Smaller and simpler than basins, used for limited drainage areas or as a supplemental measure alongside other BMPs — a reasonable choice where a full basin isn't warranted by the contributing area.
Check Dams
Small barriers placed across channels and swales to slow concentrated flow velocity, encouraging sediment to drop out before it travels further downstream. Spacing and height need to match the channel's grade and expected flow.
Sediment Tubes and Wattles
Flexible, tube-shaped barriers placed at flow concentration points or along contours on slopes, often used in areas where staked silt fence isn't practical or as a supplemental measure alongside other controls.
Choosing the Right Method
The right sediment control isn't a single default choice — it depends on contributing drainage area, flow concentration, available space, and how the method integrates with the rest of the site's BMP plan.
Frequently Asked Questions
How do I know whether a site needs a sediment basin or just a trap?
It depends on the contributing drainage area. Basins are sized for larger areas and engineered to hold runoff long enough for sediment to settle; traps are a simpler option for limited drainage areas or as a supplemental measure.
Are wattles a substitute for silt fence?
Not exactly — wattles are often used at flow concentration points or on slopes where staked silt fence isn't practical, typically as a supplemental measure alongside other controls rather than a direct replacement.
Have a question about your project?
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Need erosion control, silt fence, BMP maintenance, or post-rain inspection support? Call 407-502-6476 or request a BMP proposal from Local Environmental Services.