We tend to talk about the Ohio River Basin’s forests, wetlands, and streams in terms of beauty and health. A new study puts a different number on them: the basin’s natural ecosystems are worth at least $50 billion a year. Not someday. Every year.
That figure comes from Earth Economics, which was commissioned by the Ohio River Basin Alliance (ORBA) and funded by the Kresge Foundation to put a dollar value on what nature quietly provides across the basin. The goal was simple and practical: give legislators and communities an evidence base for deciding how much to invest in protecting and restoring the landscape we depend on.
What exactly is being valued?
The study looked at 68 million acres of natural ecosystems across the basin, the forests, wetlands, rivers, lakes, and grasslands, and set aside developed and farmed land. For each, it measured the everyday services those systems provide free of charge: clean drinking water, water filtration, flood and stormwater control, recreation, wildlife habitat, cleaner air, and a more stable climate. Economists call these ecosystem services. Most of them never show up in a market transaction, which is exactly why they get left out of budgets and decisions.
The point Earth Economics makes is one worth repeating. When natural systems are lost, we usually end up paying to replace what they did for free, with treatment plants, levees, and flood-control structures that cost money to build, operate, and maintain. A healthy wetland that soaks up floodwater is, in plain economic terms, infrastructure. It just happens to repair itself.
A basin that punches above its weight
The scale here is easy to underestimate. The Ohio River Basin is home to more than 30 million people across 14 states. The Ohio River itself runs 981 miles, the third longest river in the country, supplies drinking water to 5 million people, and carries roughly 200 million tons of barge traffic through 140 river terminals every year. And yet, unlike the Great Lakes, the Ohio River has never been designated a federally protected water system, and it does not receive the targeted federal restoration funding that status brings.
Why this matters for the work ahead
Numbers like these are a tool. They help make the case that protecting a forest or restoring a stream is not a cost with no return; it is an investment in an asset worth over a trillion dollars. That argument is central to ORBA’s Restoration Plan, which asks Congress to recognize the Ohio River and its tributaries as the valuable water system they are and to fund their protection accordingly. A related bill, the Ohio River Restoration Program Act, would create a dedicated national program office for the basin.
- The basin’s nature delivers at least $50 billion in benefits a year, and likely far more, since the model is a conservative baseline.
- Protecting ecosystems is usually cheaper than engineering replacements for the services they provide.
- Putting a value on nature helps communities advocate for the funding the Ohio River has long gone without.
For everyone working to keep this water clean, that is the takeaway. The river is not just something we love. It is something we can no longer afford to undervalue.
Figures from “Nature’s Value in the Ohio River Basin” (Earth Economics, 2025), prepared for the Ohio River Basin Alliance and funded by the Kresge Foundation. Values are in 2022 U.S. dollars; the 30-year net present value uses a 2 percent discount rate.
