Agricultural Land Maintenance: Supporting Cleaner Waterways and Reduced Runoff

You might be surprised to learn what’s polluting rivers and streams in the US.

Chemical plants? Overflowing city sewers?

Turns out…the worst offender is runoff from poorly maintained agricultural land.

Here’s why…

The facts:

Agricultural runoff is cited as the primary source of impact to rivers and streams in the United States. Agriculture occupies nearly 1.2 BILLION acres across the country, so it makes sense that how it’s managed can make a big difference.

Luckily, small changes in land maintenance can have a huge impact on waterway cleanliness and drastically reduce runoff.

Let’s dive into how.

Here’s What’s Covered:

1. Why Agricultural Runoff Pollutes Waterways
2. How Land Maintenance Limits Runoff Before It Starts
3. Vegetation Management Can Limit Sediment & Nutrient Loading
4. Buffer Strips, Field Edges & Drainage
5. Drainage Channels & Why Ditch Maintenance Matters
6. Equipment Makes The Difference

Why Agricultural Runoff Pollutes Waterways

Runoff occurs when precipitation flows over the land surface rather than being absorbed into the ground.

As it flows, water picks up anything in its path. Things like:

• Fertilizer & pesticides
• Loose dirt and soil
• Animal waste
• Herbicides/crop chemicals

That water eventually flows into the nearest stream, river, or groundwater facility. Nutrients like nitrogen and phosphorus contribute to algae growth in water sources. Algae eventually depletes oxygen in the water, killing fish and wildlife, contributing to unhealthy ecosystems, and polluting drinking water.

The United States Geological Survey (USGS) reports that farmers apply over 12 MILLION tons of nitrogen fertilizer to their fields each year. Runoff that contains even small amounts of these fertilizers can damage ecosystems for years to come.

Yikes.

Nitrogen isn’t the only issue either. Agriculture accounts for about 48% of the nitrogen loading entering the Chesapeake Bay.

This is a national issue.

How Land Maintenance Limits Runoff Before It Starts

Ok, so the question is…

How does land maintenance come into play?

If runoff is just rain/water flowing across the surface of the land, what does it matter how well fields are maintained?

When runoff occurs, water flows exactly where it’s least wanted…

If the land is overgrown, muddy, or has poor ditch maintenance…that water is going to continue running towards lakes, streams, and rivers. Eventually.

But if that land is well-maintained, rainwater has plenty of places to go before it hits the waterway.

Think of it like this…

Poorly maintained land = Directly into the water

Well-maintained land = Into the soil, not the waterway

Simple things like mowing regularly, controlling vegetation, keeping dirt paths clear of debris, and more can limit the effects of runoff before it ever becomes an issue.

Vegetation Management Can Limit Sediment & Nutrient Loading

Did you know that grass and plants actually slow down water?

Manageable vegetation means rainfall has more time to soak into the ground before it flows into the ditch. The thicker and more unkempt vegetation gets, the faster water will flow right through it… and into the waterways.

This is where a good farm equipment dealer becomes vital.

Without access to quality cutting and clearing equipment, land maintenance becomes an uphill battle. Bush Hog farm equipment is ideal for this type of work — built specifically to handle the rigorous use and terrain of agricultural land.

Rotary cutting should be done regularly along field edges, fence lines, drainage areas, and other areas. Keeping vegetation in check will slow runoff AND prevent soil erosion if things get too overgrown.

Buffer Strips, Field Edges & Drainage

Here’s a cool science fact:

Plant life and buffer strips can actually filter out nutrients and prevent them from entering waterways. One study by The Nature Conservancy discovered that a constructed wetland covering just 6% of tile-drained agricultural land could reduce nitrogen runoff by up to 47%.

Field buffers use the same principle: installing and maintaining dense vegetation along field edges to limit erosion and filter nutrients.

Pro tip: Buffer strips don’t just grow themselves.

If buffers are overgrown, they’re doing more harm than good. Leave them be, and a direct runoff channel to the waterway gets created.

Maintain them too much, and soil erosion becomes a problem.

It’s all about maintaining a dense, controlled strip of grass and plants to keep soil in place and limit nutrient loading.

Drainage Channels & Why Ditch Maintenance Matters

Did you know that farm ditches act as direct pipelines to lakes, streams, and rivers?

When field ditches are clogged with debris, overflowing with water, or eroding on the banks… they become more of a liability than an asset.

Ditch maintenance should include regular cleaning of the channel itself, keeping vegetation around the ditch mowed, and ensuring the banks stay intact.

Allowing drainage channels to fail is exponentially more expensive than routine maintenance.

Not to mention, it creates a huge problem for the waterway it leads to.

Equipment Makes The Difference

All the farm maintenance knowledge in the world won’t matter much if the equipment is struggling to do the job.

Not all farm equipment is created equal. There’s no need to break the bank just to keep land maintained, but investing in quality machines that perform well year after year is always worth it.

There’s an attachment that fits existing machinery for every task that needs completing. Whether that’s rotary cutting for field edges, a shredder for heavy brush clearing, or a durable mower built for drainage area maintenance — the right equipment makes all the difference.

Wrapping Things Up

Staying on top of vegetation, field buffers, and ditch maintenance is one of the most effective ways to limit agricultural runoff and protect nearby waterways. Here’s the breakdown:

• Healthy vegetation prevents runoff from flowing straight to waterways
• Field buffers trap sediment and filter out nutrients
• Clean drainage channels ensure water flows where it’s needed
• With the proper equipment, the above doesn’t have to be difficult

Agricultural land makes up almost half of the total land in the United States. If every farmer and operator took steps to better maintain their land… the impact on cleaner waterways would be enormous.

It all starts with the land.