Managing Runoff from Livestock

Why is livestock runoff a problem?

Runoff from animal areas carries nutrients, bacteria and sediment. In streams and ponds, nutrients feed algae, and bacteria can make water unsafe for people and animals. Sediment clouds water and harms aquatic life.

Even a few animals on a small lot can cause problems if the site is wet, sloped or near water. Neighbors downstream may notice before you do.

Barnyard runoff also carries feed, bedding and hay waste. Hay feeding areas can leach nutrients, so keep them off slopes and away from water.

• Nutrients that feed algae
• Bacteria that make water unsafe
• Sediment that clouds water
• Nutrients that leach toward wells

How do I find where my runoff goes?

Walk your animal areas during or just after a heavy rain. Watch where water flows from roofs, lots, driveways and pastures, and where it ends up. Look for gullies, muddy channels, standing water and any path to a ditch, stream, well or pond.

Sketch a simple map and mark problem spots. Your NRCS office, conservation district or extension office can help you read the site and suggest fixes.

Check your pasture as well as your pens. Overgrazed, bare fields shed water fast and carry soil with it, and thick, healthy cover slows water and lets it soak in.

• Roofs and gutters
• Barnyards and feed areas
• Gateways and lanes
• Pastures with bare ground

What are the first fixes?

Start with clean water. Gutters and downspouts on barns and sheds send roof water away from animal areas, which keeps clean water clean and reduces mud. Diverting water from upslope around your lot with a shallow ditch or berm can help too.

Next, deal with high-traffic spots. Gates, feeders and waterers are where animals concentrate, and the ground there turns to mud first.

Footing material needs thought. Ask your conservation office what materials work for your soil and animals, and how to keep them from washing away or sinking into mud. Mud itself is a sign of a design problem, not just a nuisance. Persistent mud slows animals, harms hooves and feet, and sends sediment and manure off the site, so fixing it helps your animals as well as the water.

• Gutters and downspouts on buildings
• Diversions that route clean water around pens
• Gravel or other firm footing at gates and feeders
• Waterers on well-drained ground

How do I handle manure and mud?

Pick up and store manure where rain cannot wash it away. Do not stack it on slopes or near ditches. Clean pens and lots on a regular schedule, and compost or spread manure on fields based on need.

Consider a sacrifice area, a small, firm-footed paddock where animals stay during wet periods so the rest of the pasture can recover. Add footing material as needed and keep it away from water.

Wet seasons, thaws and heavy storms are the hardest tests. Plan for them by having extra footing, a spare paddock and a place to move animals if an area becomes unusable.

How do I keep animals out of the water?

Animals in streams and ponds break down banks and add waste straight to the water. Fencing and a separate water supply can protect both. Where animals must cross, a firm, narrow crossing limits damage.

Rules about stream access and livestock vary, and cost-share programs may help with fencing and water systems. Ask your county conservation district or NRCS office what applies.

Water tanks that overflow create mud and runoff. Add a float valve or a drain pad, and fix leaks quickly. A water gap or off-stream tank in a pasture can pull animals away from the creek, and many livestock keepers find that animals drink more reliably from clean tanks than from muddy streams.

• Fence off streams and ponds
• Provide water in tanks
• Use a firm crossing if animals must cross
• Ask about cost-share for fencing

What rules and help should I look into?

Rules on livestock waste and water pollution vary by state, county and the size of the operation. Small farms are often covered by simple requirements, but you should check rather than assume. Ask your state agriculture or environmental agency and your county.

Technical help is often free through conservation districts and NRCS, and financial help may be available. Ask what programs are open, what paperwork is needed and how long the process takes.

Small steps add up. Pick the worst muddy spot, fix it first and learn from the result before tackling the next one.

• Fix the worst spot first
• Watch it in the next storm
• Then move to the next spot

Last reviewed: November 12, 2026. Written by the Homestead & Small Farm Editorial Team. See our editorial policy.