Erosion is a natural process, so you might be wondering why we’re so concerned about keeping dirt in its place…
It was a busy first quarter for the MS4 program! We submitted our annual report to the Ohio Environmental Protection Agency (OEPA) which outlined our 2024 accomplishments and our plan for 2025. Sam and I have also been working with the health department to inspect outfalls that previously had illicit discharges and are re-testing them to confirm elimination. While we’re not currently seeing any signs of illicit discharge, these inspections serve as a good reminder of the 2025 MS4 theme – Keep Dirt In Place!
Erosion is a natural process, so you might be wondering why we’re so concerned about keeping dirt in its place. While some erosion is natural, we want to reduce man-made erosion caused by construction activities and other earth disturbances. Once erosion starts, the topsoil is the first to go – and it takes several hundred years to form just one inch of it. Losing that nutrient rich layer not only reduces the soil’s ability to retain moisture (which can lead to flooding), but also negatively impacts crop yields. According to the World Wildlife Fund “half of the topsoil on the planet has been lost in the last 150 years”. For many Ohio farmers, losing more topsoil is not an option and best management practices to prevent further erosion become essential.
When soil is washed away through erosion, it is often washed into the nearest waterbody during rain events. As water travels over land as runoff, it picks up whatever is in its path -including soil. The soil in the stormwater runoff can bind with chemicals and other materials, transporting them to local streams. Once soil enters a stream, the water can become discolored and murky, harming the aquatic organisms that rely on clean, clear water. It also makes it harder for animals to hunt, find shelter and breathe as turbidity (cloudiness of the water) blocks sunlight and reduces oxygen levels.
While erosion might not seem like a pressing issue, it has far reaching consequences for both humans and wildlife. Even a small amount of displaced dirt can harm the health of our waterways. It’s our responsibility to stabilize bare soil and prevent pollution – after all, we don’t want to see another dust bowl!
Learn more about loss of topsoil: https://www.worldwildlife.org/threats/soil-erosion-and-degradation Learn more about turbid water: https://www.usgs.gov/special-topics/water-science-school/science/turbidity-and-water
