What do you think of when you hear about polluted streams or rivers? For most people fertilizers, pesticides, and petroleum products come to mind, but soil particles that wash in to the stream are also a significant source of pollution and can change the entire ecology of a stream.
• Light is blocked, aquatic plants don’t grow.
• Habitat is destroyed when sediment fills the spaces between rocks where the smallest organisms live. Small fish and others have no place to hide from predators.
• Food sources, both plant an animal, are limited.
• The once complex ecosystem of the stream becomes simple; there is little diversity. Organisms that are tolerant of these conditions predominate; sensitive organisms may be completely lost.
• This affects the terrestrial food web as well.
This is what has happened in Reedy Creek and most other urban streams. Human activities cause much more erosion than would occur naturally. Habitat has been degraded and we no longer find the diversity of organisms that would exist in a healthy stream, including the stonefly nymph featured on our logo. If you live in the Reedy Creek watershed, there is good chance that a little of your yard has washed down to Reedy Creek, the lake in Forest Hill Park, and the James River. The contribution from your property may not seem significant, but the cumulative effect from residential properties has a big impact on local streams and beyond. Here’s how you can help…
• Look for evidence of erosion on your property, especially bare patches of ground on slopes or near driveways and walks.
• If the problem is caused by water running from a downspout or impervious surface during a rain, redirect or capture that water.
• Reduce erosion potential by planting these areas with perennials, shrubs, or trees. The roots of plants will help hold the soil. Shrubs and trees are best where possible and native species are always best.
• Do everything you can to keep rain water on your property.
Even if your yard doesn’t appear to have a problem, water that leaves your property often ends up in your local stream, causing erosion or picking up sediment on its way to the stream and contributing to stream bank erosion once it gets there.
Help bring the stonefly back to Reedy Creek.