1.20 Vegetation for Removing Pollutants from Runoff


Pollutant removal functions of vegetation include reducing flow velocities, increasing deposition and infiltration, and providing nutrient uptake and organic matter for pollutant transformation.

Many types of vegetation can provide these functions. A mixture of herbaceous and woody species may provide the best overall combination (see table below). Vegetation selection should also be based on site capabilities and landowner preferences.

Other factors (e.g., width, slope, location, buffer area ratio, and soils) may play more important roles than vegetation type.

Table DOWNLOAD: 1.20 Guidelines and References (PDF)