In the world of logic, there is a sharp tool used to cut through the clutter of over-thinking: Occam’s Razor. Named after the 14th-century logician William of Ockham, the principle suggests that among competing hypotheses, the one with the fewest assumptions should be selected. In plain English, the simplest explanation is usually the right one. When we apply this “razor” to the environmental health of the May River in Bluffton, South Carolina, it becomes an essential lens for understanding why the headwaters are struggling.
For decades, environmental researchers have relied on the 10% Rule to explain the decline of coastal ecosystems. This rule states that once a watershed’s surface area reaches 10% impervious cover—such as rooftops, roads, and parking lots—the biological health of the receiving water begins to decline sharply. While it is tempting to search for “extraordinary” culprits like secret industrial dumping or rare biological mutations to explain rising bacteria levels, Occam’s Razor points us back to the most obvious, evidence-based cause: stormwater runoff.
In a natural forest, rain is filtered by soil and plants, but in a developed landscape, rain hits pavement and rushes directly into the river. This rapid flow carries pet waste, fertilizers, and surface bacteria directly into the sensitive headwaters. We do not need to assume a complex conspiracy or a hidden geological shift; we only need to look at the map of Bluffton’s growth. As the impervious surface area near the headwaters surpassed that critical 10% threshold, the water quality dropped exactly as the mathematical model predicted.
The May River headwaters are particularly vulnerable because they lack the “flushing” power found in the wider reaches of the river near the sound. By applying Occam’s Razor here, we stop chasing “wild geese” and focus on the primary driver of the problem. If the simplest explanation is that more asphalt leads to more runoff, then the solution lies in mimicking nature through rain gardens, pervious materials, and wider buffer zones. Protecting the May River doesn’t require over-complicating the science—it requires respecting the simple math of the land.