how to prevent runoff pollution

Trees and forests reduce stormwater runoff by capturing and storing rainfall in the canopy and releasing water into the atmosphere through evapotranspiration. In addition, tree roots and leaf litter create soil conditions that promote the infiltration of rainwater into the soil.

What is runoff pollution?

Stormwater (or polluted runoff) is rain or melting snow that flows over the ground. In urban or developed areas, stormwater runs over pavement and parking lots, picking up oil and other pollutants before flowing into a nearby river or stream.

Why does vegetation prevent flooding?

By intercepting and slowing precipitation hitting the ground, vegetation substantially reduces the volume and rate of stormwater runoff. This helps protect soil from erosion and reduces flash flooding.

How do you protect steep slopes?

Slopes over 50% will require structures or special techniques for stabilization. Techniques for steep slopes include wood retaining walls, interlocking concrete blocks, rock retaining walls, riprap (loose rock) areas, and terracing.

How do you stabilize slope?

Slopes can be stabilized by adding a surface cover to the slope, excavating and changing (or regrading) the slope geometry, adding support structures to reinforce the slope or using drainage to control the groundwater in slope material.

How do you stabilize a steep hill?

Landscaping Ideas: How to Stabilize a Steep Slope

Selection. Native plants are the best low-maintenance option for steep slopes. …
Technique. Creating temporary mini-terraces allows trees, shrubs and larger perennials to grow vertically on the slope rather than sideways. …
Access. …
Irrigation.