Common Bioswale Design Mistakes to Avoid
Most bioswale design mistakes come from treating the feature as a planted drainage ditch instead of a stormwater system with soil, slope, flow, overflow, vegetation,…
Bioswale Pretreatment: Sediment Traps, Forebays, and Filter Strips
Bioswale pretreatment is the small upstream layer of protection that keeps sediment, leaf litter, grit, and coarse debris from entering the main planted swale too…
Bioswale Underdrain: When It Is Needed and How It Works
A bioswale underdrain is a perforated pipe system placed beneath the planting soil to collect filtered stormwater when the native ground cannot absorb water fast…
Bioswale Check Dams: Purpose, Materials, and Placement
A bioswale check dam is a low barrier placed across the swale to slow runoff, spread water, and create a stepped flow path instead of…
Bioswale Outlet Design: Safe Overflow and Discharge Basics
A bioswale outlet is the planned exit point for water that the swale cannot hold, infiltrate, or filter fast enough during a storm. Good bioswale…
Bioswale Inlet Design: How Runoff Enters the System
A bioswale inlet is the point where stormwater runoff first enters the planted channel, and that small transition often decides whether the system works smoothly…
Bioswale Cross Section: Layers, Shape, and Function
A bioswale cross section shows what happens below the visible strip of plants: runoff enters a shallow vegetated channel, spreads across a shaped surface, passes…
Bioswale Slope: Why Grade Matters for Stormwater Flow
Bioswale slope controls how stormwater moves through the swale: too flat, and water may sit longer than intended; too steep, and runoff can rush through…
Bioswale Dimensions: Width, Depth, Length, and Flow Path
Bioswale dimensions are not fixed numbers copied from a single template. Width, depth, length, side slope, soil condition, and flow path all work together to…
Bioswale Design Guide: Slope, Soil, Plants, and Drainage
A bioswale design works best when four parts are planned together: slope, soil, plants, and drainage. The swale must move stormwater slowly enough for filtering…