Beef Cattle Manure Storage and Composting Facility Design

By Dr. Zubair Khalid, DVM, MS, PhD · 2026-08-14

Key Takeaways

• Manure storage design necessitates a thorough assessment of herd size, daily manure production (e.g., a 1,200 lb finishing steer produces ~60 lbs/day), and local climate to determine required capacity, with typical minimum storage periods ranging from 6 to 12 months to accommodate wet or frozen spreading conditions.
• Solid manure systems, suitable for operations with bedding or in drier climates, require careful consideration of bedding type (straw/hay vs. wood shavings/sand) which significantly impacts total volume and handling characteristics, with wood products potentially tying up nitrogen.
• Composting beef manure demands a dedicated pad with a 1-3% slope for drainage, a compacted base, and a system for collecting runoff, alongside adequate carbon sources (e.g., straw, wood chips) to achieve the target 25-30:1 carbon-to-nitrogen ratio for effective aerobic decomposition.
• Regulatory compliance mandates specific setback distances for storage facilities, typically at least 150 feet from wells and 300 feet from streams, to mitigate risks of nitrogen, phosphorus, and pathogen contamination of surface and groundwater.
• Effective manure management includes meticulous recordkeeping of manure volumes, nutrient analyses (e.g., N, P, K content), spreading dates, and weather conditions, crucial for regulatory compliance and optimizing nutrient utilization as a valuable soil amendment.
• Equipment accessibility is paramount; designs must ensure tractors and loading equipment can effectively reach, mix, and haul manure or compost, with considerations for pile height (6-8 ft for tractor loading) and pad footprint relative to total volume.

Manure is an unavoidable part of beef cattle operations, but how you store and process it determines whether it becomes a valuable resource or a costly liability. This guide covers the full planning process for beef cattle manure storage design, from assessing your herd size and local regulations to choosing between solid, liquid, and composting systems. It is written for beef producers, farm managers, and agricultural planners who are designing new facilities or upgrading existing ones. You will learn the key decisions, common mistakes, and practical steps for building a manure system that protects water quality, meets regulations, and produces a usable soil amendment.

At a Glance

• Manure storage design starts with knowing your herd size, manure production, and local climate, not with buying equipment.
• Solid manure systems work best for beef operations on bedding or in dry climates. Liquid systems suit larger feedlots and operations that can justify the higher cost.
• Composting beef manure requires a pad with proper drainage, adequate carbon sources, and a plan for turning the pile.
• The minimum storage period is typically 6 months, but many regions require 9 to 12 months of capacity to avoid spreading during wet or frozen conditions.
• Locate storage facilities at least 150 feet from wells, 300 feet from streams, and 500 feet from neighboring homes where local rules allow.
• A compost pad needs a slope of 1 to 3 percent, a compacted base, and a system for collecting runoff.
• Manure storage design must include a plan for loading, mixing, and hauling. If the equipment cannot reach the pile, the design fails.
• Keep written records of manure volumes, nutrient tests, spreading dates, and weather conditions for both regulatory compliance and nutrient planning.

Why Manure Storage Design Matters for Beef Operations

Beef cattle produce a significant amount of manure. A 1,200 pound cow generates roughly 60 pounds of manure per day, which adds up to about 11 tons per year. A herd of 100 cows produces over 1,000 tons of manure annually. Without a planned storage system, that manure ends up in barnyards, feeding areas, and drainage paths where it can contaminate surface water and groundwater.

The environmental risks are real. Manure contains nitrogen, phosphorus, and pathogens. When rain falls on uncovered manure piles or runoff flows through feedlots, these contaminants move into streams, ponds, and wells. High nutrient levels cause algae blooms that kill fish. Bacteria can make water unsafe for drinking and swimming. In many areas, state and local agencies now regulate manure storage and require permits for larger operations.

Manure also has economic value. A ton of beef manure contains roughly 10 to 15 pounds of nitrogen, 5 to 10 pounds of phosphorus, and 10 to 15 pounds of potassium, depending on bedding, diet, and storage method. At current fertilizer prices, the nutrients in manure from a 100 cow herd are worth thousands of dollars per year. A well designed storage system preserves those nutrients and makes them easier to apply at the right time and rate.

The design process matters because mistakes are expensive to fix. A storage structure that is too small, in the wrong location, or built on poor soil will cause problems for decades. Retrofitting a pad, adding a roof, or relocating a pile is far more costly than getting the design right the first time. This guide walks through the decisions in order so you can plan a system that works for your specific operation.

Understanding Your Manure Production and Characteristics

Before you can design a storage facility, you need to know how much manure your cattle produce and what that manure looks like. Manure volume and consistency vary with animal size, diet, bedding use, and how long cattle spend in confinement.

Estimating Manure Volume

The starting point for any beef cattle manure storage design is an estimate of daily manure production. The table below shows typical values for beef cattle at different stages.

These are baseline values. Actual production varies. Cattle on high forage diets produce more manure with lower nutrient density. Cattle on high concentrate finishing rations produce less manure with higher nutrient content. Adding bedding increases total volume significantly. A typical deep bedded system with straw or sawdust can add 50 to 100 percent more volume compared to manure alone.

Bedding and Its Effect on Volume

Bedding choice is one of the biggest factors in manure volume. Sand, straw, hay, wood shavings, and sawdust all add bulk. Sand adds weight and does not compost well. Straw and hay break down readily but add carbon that helps composting. Wood products resist decomposition and can tie up nitrogen in the soil if applied fresh.

For storage design, plan on the following volume increases from bedding:

• Straw bedding: 30 to 50 percent increase over manure alone
• Hay or low quality forage: 30 to 50 percent increase
• Wood shavings or sawdust: 50 to 100 percent increase
• Sand: 100 to 150 percent increase in weight, minimal increase in volume

If you bed heavily in winter, your storage facility must handle the peak volume, not the annual average. Most operations need the most storage capacity in late winter and early spring when cattle have been housed for months and fields are too wet to spread.

Manure Consistency and Handling

Beef manure ranges from nearly solid to semi liquid depending on moisture content. Manure with more than 20 percent dry matter is considered solid and can be stacked. Manure with 10 to 20 percent dry matter is semi solid and flows slowly. Manure below 10 percent dry matter behaves like a liquid and requires tank storage.

Most beef operations on bedding produce solid or semi solid manure. Open lot operations with little bedding and significant rainfall may produce semi solid material that needs different handling equipment. Understanding your manure consistency helps you choose between a stacking shed, a concrete pad, or a liquid lagoon.

Regulatory Requirements and Environmental Considerations

Manure storage facilities are regulated in most areas. The specific rules vary by state, county, and the size of your operation. You must check local requirements before building. The design that works for a neighbor may not meet your local rules.

Federal Regulations

The Clean Water Act regulates concentrated animal feeding operations (CAFOs) through the National Pollutant Discharge Elimination System (NPDES) permit program. Operations that meet the CAFO definition must have a nutrient management plan and a manure storage system that prevents discharge to surface water. The USDA Natural Resources Conservation Service (NRCS) provides technical standards for manure storage facilities through its Agricultural Waste Management Field Handbook.

Most beef operations with fewer than 1,000 cattle are not automatically considered CAFOs. However, any operation that discharges manure or process wastewater to surface water can be designated as a CAFO regardless of size. The safest approach is to design a system that prevents all discharges, whether or not you need a permit.

State and Local Rules

State regulations vary widely. Some states require permits for any manure storage facility. Others only regulate larger operations. Many counties have zoning rules that require setbacks from property lines, roads, and water bodies. Some areas require an engineer to design and certify manure storage structures.

Common setback requirements include:

• 50 to 150 feet from property lines
• 100 to 300 feet from streams, lakes, and drainage ways
• 50 to 150 feet from wells
• 100 to 500 feet from neighboring residences
• 25 to 50 feet from roads

These are general ranges. Your local requirements may be more or less restrictive. Contact your county extension office, soil and water conservation district, or state department of agriculture before you finalize a design.

Environmental Site Assessment

Before building, evaluate your site for environmental constraints. A qualified consultant or NRCS staff can help with this assessment. Key factors include:

• Soil type and depth to bedrock
• Depth to groundwater
• Proximity to wells, springs, and surface water
• Flood risk
• Slope and drainage patterns
• Existing structures and utilities

Sites with shallow groundwater, sandy soils, or high water tables are poor choices for earthen storage structures. These sites may require lined storage or above ground tanks. Sites near sinkholes or karst geology should be avoided entirely.

Beef Cattle Manure Storage Options

Several storage options exist for beef manure. The right choice depends on your herd size, climate, available land, equipment, and budget. This section covers the main categories and helps you narrow down the options.

Solid Manure Storage

Solid manure storage is the most common system for beef operations. It works best when manure contains enough bedding or dry matter to stack. Solid storage includes stacking sheds, concrete pads, and earthen pads.

Stacking sheds are roofed structures with three walls and a concrete floor. The roof keeps rain off the manure, which reduces runoff and preserves nutrients. The open front allows access for loading equipment. Stacking sheds are the most expensive solid storage option but also the most environmentally protective. They work well in high rainfall areas and for operations that want to minimize nutrient loss.

Concrete pads are unroofed concrete slabs with a curb or wall on three sides. Manure is stacked on the pad and runoff is collected and directed to a storage pond or vegetative treatment area. Concrete pads cost less than stacking sheds but allow rain to add moisture and leach nutrients from the pile.

Earthen pads are compacted soil or clay areas with a slight slope. They are the least expensive solid storage option but have the highest risk of groundwater contamination and runoff. Earthen pads require careful site selection and regular maintenance to prevent erosion and rutting.

Solid storage systems need enough space for the pile to be stacked and turned. Plan for a pile height of 6 to 8 feet for tractor loading. The footprint of the storage area should be roughly 1.5 times the annual manure volume to allow for stacking angle and equipment access.

Liquid Manure Storage

Liquid systems are less common for beef cattle but may be appropriate for large feedlots or operations with flush cleaning systems. Liquid storage includes earthen lagoons, concrete tanks, and above ground steel or concrete tanks.

Earthen lagoons are excavated basins lined with compacted clay or a synthetic liner. They are the least expensive liquid storage option but require the most land and careful management. Lagoons must be sized to hold manure, rainfall, and runoff during the storage period. They also need a minimum depth to maintain anaerobic conditions and control odors.

Concrete tanks are more expensive than lagoons but provide more reliable containment. They are typically installed below grade and can be covered to reduce odor and rainfall. Concrete tanks work well for operations with high water tables or limited space.

Above ground tanks are the most expensive liquid storage option. They are used when site conditions prevent below grade construction. Steel and glass fused to steel tanks are common choices. These tanks have a long service life but require a solid foundation and careful installation.

Liquid storage requires a pump and agitation system for removal. You also need a way to apply the liquid manure to fields. This typically means a tank spreader or an irrigation system. The equipment cost for liquid systems is significant and should be included in your budget.

Composting Systems

Composting is both a storage method and a treatment process. It reduces manure volume, kills pathogens, and produces a stable soil amendment. Composting requires more management than simple storage but offers several benefits.

Composting works by creating conditions for aerobic bacteria to break down organic matter. The process generates heat that can reach 130 to 160 degrees Fahrenheit. This heat kills weed seeds and pathogens. The finished compost is a dark, crumbly, earthy smelling material that is easier to handle and apply than raw manure.

Static pile composting involves building a pile and leaving it undisturbed for several months. This method requires less labor but takes longer and may not reach high enough temperatures in all parts of the pile. It works best for small operations or as a secondary treatment for already stored manure.

Turned windrow composting involves forming manure into long rows and turning them regularly with a compost turner or tractor mounted bucket. Turning adds oxygen, mixes the material, and speeds decomposition. Windrows are typically 4 to 6 feet high and 10 to 14 feet wide. This method requires more equipment and labor but produces finished compost in 8 to 16 weeks.

Aerated static pile composting uses perforated pipes and blowers to force air through the pile. This method is faster and produces more uniform compost but requires electrical power and specialized equipment. It is more common in commercial composting operations than on individual farms.

Composting is not appropriate for all beef operations. It requires a carbon source such as straw, hay, or wood chips. Manure alone is too high in nitrogen and too wet to compost properly. You need a ratio of roughly 25 to 30 parts carbon to 1 part nitrogen by weight. For beef manure, this typically means adding 1 to 2 parts bedding or straw for every 3 to 4 parts manure.

The composting site needs a pad with proper drainage and runoff collection. The pad should be large enough for the active windrows plus room to turn and store finished compost. A general rule is to plan for 1 square foot of pad area per 10 to 15 pounds of manure composted per year.

Choosing the Right Storage System for Your Operation

Selecting a manure storage system requires a systematic evaluation of your operation. Work through these factors in order to narrow down your options.

Step 1: Assess Your Herd and Housing

Start by documenting your current and planned herd size, housing system, and time cattle spend in confinement. A cow calf operation that houses cattle only during winter has different needs than a feedlot that keeps cattle on a pad year round.

Calculate your annual manure production using the table earlier in this guide. Add bedding volume based on your housing system. This gives you the total volume your storage must handle.

Step 2: Determine Your Storage Period

The storage period is the minimum number of days you must hold manure without spreading. This is driven by your climate, cropping system, and regulations.

In cold climates, the storage period is typically 180 to 270 days because fields are frozen or too wet to spread from November through April. In milder climates, the storage period may be as short as 90 days. Check with your local extension office or regulatory agency for the required minimum in your area.

Multiply your daily manure production by the storage period to get the required storage capacity. Add 10 to 20 percent extra capacity for unexpected weather, equipment breakdowns, or missed spreading windows.

Step 3: Evaluate Your Site

Walk your property and identify potential locations for manure storage. Consider the following:

• Distance from water sources and property lines
• Soil type and drainage
• Slope and access for equipment
• Visibility from roads and neighboring homes
• Prevailing wind direction for odor control

A site that looks convenient may be unsuitable due to poor soils or proximity to water. Evaluate several options before making a decision.

Step 4: Consider Your Equipment

Your existing equipment determines what storage options are practical. A tractor with a loader can handle solid manure and compost. A liquid system requires a tank spreader or irrigation equipment. If you do not already own liquid handling equipment, factor that cost into your decision.

Also consider how you will load the storage facility. A stacking shed with a concrete floor and open front is easy to load with a front end loader. A deep pit or tank requires a pump and agitation system. Match the storage design to your equipment capabilities.

Step 5: Estimate Costs

Develop a budget that includes construction, equipment, and annual operating costs. Construction costs vary widely by region and material prices. Get quotes from local contractors for concrete work, excavation, and fencing.

Operating costs include labor for loading and hauling, equipment maintenance, and any pumping or agitation costs. Composting adds labor for turning and monitoring but may reduce hauling costs because compost is lighter and less bulky than raw manure.

Step 6: Compare Options Side by Side

Create a comparison table for your top two or three storage options. Include costs, labor requirements, environmental risks, and fit with your operation. This exercise often reveals that the cheapest option to build is the most expensive to operate.

Designing a Solid Manure Storage Facility

Solid manure storage is the most common choice for beef operations. This section provides detailed design guidance for stacking sheds, concrete pads, and earthen pads.

Sizing the Storage Area

The storage area must hold the maximum manure volume during the longest storage period. Use this formula:

Storage volume = (daily manure volume + daily bedding volume) x storage days

Add 20 percent for pile settling, snow, and rain absorption. For example, a 100 cow herd producing 240 cubic feet per day of manure and bedding with a 210 day storage period needs:

240 x 210 = 50,400 cubic feet of storage

Add 20 percent for a design volume of 60,480 cubic feet.

The footprint depends on pile height. A pile 8 feet high with 2 to 1 side slopes occupies roughly 1.5 times the volume of the pile itself. For the example above, the footprint would be about 90,700 square feet, or roughly 300 by 300 feet. A stacking shed with 12 foot walls reduces the footprint to about 5,000 square feet, or 50 by 100 feet.

Concrete Pad Design

A concrete pad for solid manure storage should be at least 6 inches thick with reinforcement. Use a minimum 4,000 psi concrete with fiber mesh or rebar. The pad should slope 1 to 2 percent toward a collection point. Install a curb or wall at least 12 inches high on the down slope sides to contain manure and runoff.

The pad should be large enough for tractors to maneuver. A minimum working width of 30 feet is recommended. The pad surface should be broom finished for traction and sloped away from any buildings or feed storage areas.

Runoff Collection

Runoff from solid manure storage contains nutrients and must be managed. The simplest approach is to direct runoff to a vegetated buffer or grassed waterway. More protective systems collect runoff in a small pond or tank for later application to cropland.

A runoff collection pond should be sized to hold the runoff from a 25 year, 24 hour storm event. Your local NRCS office can provide rainfall data and design assistance. The pond should be lined with compacted clay or a synthetic liner to prevent seepage.

For stacking sheds, the roof eliminates most runoff. The open front still allows some runoff from rain that blows in. Install a small gutter or drain along the front edge to direct this water to the collection system.

Earthen Pad Design

Earthen pads are the least expensive option but require careful site preparation. The pad should be constructed on well drained soil with at least 4 feet of separation to groundwater. Compact the soil to at least 90 percent standard proctor density. The pad surface should slope 2 to 4 percent to promote drainage.

A clay liner is recommended if the native soil is sandy or permeable. The liner should be at least 12 inches thick and compacted in 6 inch lifts. A synthetic liner provides the highest level of protection but adds significant cost.

Regular maintenance is essential for earthen pads. Fill ruts and holes promptly to prevent water ponding. Remove accumulated manure from the edges to maintain drainage. Inspect the pad after heavy rains and repair any erosion.

Designing a Compost Pad for Cattle

Composting beef manure requires a dedicated pad with specific design features. A well designed compost pad makes the process easier and prevents environmental problems.

Pad Location and Size

Choose a location that is accessible year round and has good drainage. The pad should be at least 150 feet from wells and 300 feet from streams. Consider prevailing winds when locating the pad to minimize odor complaints from neighbors.

The pad must be large enough for the active composting area, a storage area for raw materials, and a curing area for finished compost. As a general guide, plan for 1 square foot of pad area per 10 to 15 pounds of manure composted annually. A 100 cow herd producing 600 tons of manure per year would need a pad of roughly 40,000 to 60,000 square feet, or about 1 to 1.5 acres.

Pad Construction

The compost pad should be constructed on a compacted base with a surface that sheds water and supports equipment. Concrete is the most durable option but is expensive for large pads. A compacted clay or crushed stone surface is a lower cost alternative.

The pad should slope 1 to 3 percent to direct runoff to a collection area. The slope should be uniform and free of low spots where water can pond. Install a perimeter berm or curb to contain runoff and prevent contamination of surrounding areas.

Drainage and Runoff Management

Compost pads generate runoff that is high in nutrients and organic matter. This runoff must be collected and managed. The most common approach is a vegetated filter strip or grassed waterway that treats runoff before it reaches surface water.

A more protective system uses a settling basin or detention pond. Runoff from the pad flows into the basin where solids settle out. The clarified water can be irrigated onto adjacent cropland or allowed to infiltrate if soils permit.

The runoff collection system should be designed for the 25 year, 24 hour storm event. Your local NRCS office can provide design assistance and may have cost share programs for compost pad construction.

Water Supply

Composting requires moisture. The pile should be kept at 50 to 60 percent moisture, roughly the consistency of a wrung out sponge. In dry climates, you may need to add water during the composting process. Locate the pad near a water source or plan to haul water to the site.

Access and Equipment

The pad needs all weather access for tractors and compost turners. The entrance should be wide enough for your largest equipment. The pad surface must support the weight of loaded equipment without rutting.

Plan for a turning area at the end of each windrow. A tractor with a loader needs at least 30 feet of turning space. A dedicated compost turner may need more or less depending on the model.

Managing the Composting Process

Building a compost pad is only the first step. Successful composting requires ongoing management of moisture, oxygen, and carbon to nitrogen ratio.

Building the Windrow

Form manure and bedding into windrows that are 4 to 6 feet high and 10 to 14 feet wide at the base. The windrow should be long enough to be efficient but short enough to manage. A typical windrow is 100 to 200 feet long.

Mix the manure and carbon source thoroughly as you build the windrow. Layering materials in alternating strata is less effective because it creates pockets of uncomposted material. The goal is a uniform mixture with the right carbon to nitrogen ratio.

Monitoring Temperature

Compost temperature is the best indicator of biological activity. A properly functioning pile heats up within 2 to 3 days and maintains temperatures of 130 to 150 degrees Fahrenheit for several weeks. Use a compost thermometer with a 3 foot probe to monitor temperature at multiple locations in the pile.

Turn the pile when temperatures exceed 150 degrees or when they drop below 120 degrees. High temperatures indicate the pile is working but may be depleting oxygen. Low temperatures indicate the pile has gone anaerobic or has run out of easily degradable carbon.

Managing Moisture

Squeeze a handful of compost. It should feel like a wrung out sponge with a few drops of water when squeezed hard. If water runs out, the pile is too wet and needs more carbon or more frequent turning. If the material is dry and dusty, add water while turning.

Turning Frequency

Turn the pile every 3 to 7 days during the active composting phase. More frequent turning speeds the process but increases labor and equipment costs. Most beef operations turn every 5 to 7 days for the first 4 to 6 weeks, then less frequently as the pile stabilizes.

Curing and Storage

After the active phase, compost enters a curing phase where it stabilizes and matures. Curing takes 4 to 8 weeks. The pile should be turned once or twice during this period and kept moist but not wet.

Finished compost can be stored in a pile or applied directly to fields. It is stable and will not reheat or cause nutrient burn. Store finished compost separately from raw manure to avoid recontamination.

Common Design Mistakes and How to Avoid Them

Many manure storage facilities fail because of preventable design errors. Learn from these common mistakes to avoid costly problems.

Undersizing the Storage

The most common mistake is building storage that is too small. Producers underestimate manure production, forget to add bedding volume, or ignore the need for extra capacity during wet years. The result is overflow that creates runoff and forces spreading when fields are unsuitable.

Avoid this by calculating your storage needs carefully and adding 20 percent extra capacity. If you are unsure, add more. The cost of extra concrete or pad area is small compared to the cost of a failed system.

Ignoring Runoff

Some producers build a storage pad but do not plan for runoff. Rain that falls on the pile picks up nutrients and pathogens. Without a collection system, this runoff flows into ditches and streams.

Every storage facility needs a runoff management plan. The plan may be a vegetated buffer, a collection pond, or a roof. Do not proceed without one.

Poor Site Selection

Building on a site with shallow groundwater, sandy soils, or poor drainage leads to contamination and regulatory problems. Some producers choose a convenient location that is unsuitable and pay the price later.

Evaluate your site before building. If the site is marginal, consider a different location or a more protective storage option such as a lined structure.

Inadequate Equipment Access

A storage facility that is difficult to load or unload will not be used properly. Piles that are too high, pads that are too narrow, or entrances that are too tight make the operation frustrating and inefficient.

Design for your largest equipment. A front end loader needs a minimum 30 foot turning radius. A manure spreader needs a wide enough entrance to back up to the pile. Walk through the loading process on paper before you pour concrete.

Skipping the Nutrient Management Plan

Manure is a fertilizer resource. Without a plan for where and when to spread it, you may over apply nutrients to some fields and under apply to others. This wastes fertilizer value and creates environmental risk.

Develop a nutrient management plan before you build storage. The plan should identify application fields, application rates, and timing based on crop needs and soil tests. Your local extension office or NRCS can help with this.

Monitoring and Recordkeeping

A manure storage facility requires ongoing monitoring and documentation. Good records protect you in the event of a regulatory inspection and help you manage the system effectively.

Regular Inspections

Inspect your storage facility at least monthly and after major rain events. Look for:

• Cracks or erosion in concrete pads
• Rutting or low spots in earthen pads
• Accumulation of solids in runoff collection systems
• Signs of seepage or groundwater contamination
• Odor problems that indicate anaerobic conditions
• Damage to fences, gates, or covers

Document each inspection with a date and notes. Take photos when you find problems. This documentation shows regulators that you are actively managing the facility.

Manure Testing

Test your manure or compost annually for nutrient content. A standard manure test measures nitrogen, phosphorus, potassium, and moisture. The results tell you how much fertilizer value you are applying to fields.

Take samples from multiple locations in the pile and mix them together. Submit the sample to a certified laboratory. Your extension office can provide sampling instructions and laboratory contacts.

Spreading Records

Keep detailed records of every manure application. Include the date, field, application rate, weather conditions, and the nutrient analysis of the manure. This information is required for nutrient management plans and is useful for planning future applications.

Regulatory Documentation

If your operation has a permit, you may be required to submit annual reports on manure production, storage, and application. Keep copies of all permits, inspection reports, and correspondence with regulatory agencies. Store these records in a safe place for at least 5 years.

When to Call a Professional

Most manure storage design work can be done with guidance from extension resources and NRCS staff. However, some situations require professional help.

When to Consult an Engineer

A professional engineer should be involved in the following situations:

• Building a liquid manure storage structure such as a lagoon or tank
• Constructing a structure that will hold more than 1 million gallons
• Building in areas with high groundwater or poor soils
• Designing structures that require a professional seal or certification
• Any project where the local regulator requires an engineer's stamp

An engineer can also help with complex runoff collection systems, structural design for stacking sheds, and geotechnical investigations for earthen structures.

When to Contact Your Extension Agent

Your extension agent is a valuable resource for:

• Local regulations and permit requirements
• Manure nutrient values and application rates
• Composting methods and troubleshooting
• Cost share programs for manure storage construction
• Soil testing and interpretation

Your extension agent can also connect you with NRCS staff who provide technical design assistance at no cost.

When to Call a Veterinarian

Manure storage is not typically a veterinary issue. However, contact your veterinarian if you notice:

• Manure that is unusually watery, bloody, or foul smelling
• Cattle that refuse to use the housing or feeding area near the storage
• Flies or other pests that are affecting animal health
• Signs of disease that may be linked to contaminated water or feed

Your veterinarian can help identify health issues that may be related to manure management and recommend corrective actions.

When Regulatory Issues Arise

If you receive a notice of violation from a regulatory agency, contact an agricultural attorney or your state cattlemen's association for guidance. Do not ignore the notice or try to resolve it without understanding your legal obligations. An attorney who specializes in agricultural law can help you respond appropriately and protect your operation.

Frequently Asked Questions

How long can I store beef cattle manure before it becomes a problem?

Beef cattle manure can be stored indefinitely if the facility is designed and managed properly. The key issues are moisture content and nutrient preservation. Solid manure stored under cover will retain most of its nitrogen for 6 to 12 months. Uncovered piles lose nitrogen through volatilization and leaching, especially in wet climates. For nutrient value and ease of handling, plan to spread within 6 to 12 months of when the manure was produced. The storage period is more about your spreading schedule than about manure quality.

What is the minimum distance a manure pile should be from a well or stream?

Most state regulations require a minimum of 50 to 150 feet from wells and 100 to 300 feet from streams and other surface water. Some states require larger setbacks for unlined earthen storage. Check with your county extension office or state department of agriculture for the specific requirements in your area. These setbacks are minimums. If your site has sandy soils or shallow groundwater, you may need larger setbacks or a lined storage structure to protect water quality.

Can I compost beef manure on a gravel pad instead of concrete?

Yes, a well constructed gravel pad can work for composting beef manure. The pad should be at least 12 inches of compacted crushed stone over a compacted subgrade. The surface should drain freely and support equipment without rutting. The main risk with gravel is that the pad surface can become contaminated with manure and nutrients, making it harder to clean and increasing the risk of runoff. Some producers install a concrete apron in the loading area and use gravel for the main pad. This reduces cost while providing a clean surface for the most intensive work.

How much carbon material do I need to add for composting beef manure?

Beef manure is relatively high in nitrogen and needs additional carbon to compost properly. A good target is a carbon to nitrogen ratio of 25 to 30 to 1. For beef manure with bedding, you may only need to add a small amount of additional carbon. For manure from an open lot with little bedding, you may need to add 1 to 2 parts straw or wood chips for every 3 to 4 parts manure by volume. The easiest way to judge is to mix the materials and check the moisture content. If the mixture is wet and smells like ammonia, add more carbon. If it is dry and slow to heat, add more manure or water.

Should I build a roof over my manure storage?

A roof is not always necessary but offers significant benefits. A roof keeps rain off the pile, which reduces runoff and preserves nutrients. It also keeps the manure drier, which makes it easier to handle and spread. The main disadvantage is cost. A stacking shed with a roof typically costs 30 to 50 percent more than an open concrete pad. In areas with more than 30 inches of annual rainfall, a roof is often worth the investment. In dry climates, an open pad with proper runoff management may be sufficient.

How do I calculate the size of my manure storage facility?

Start with the number of cattle and their average weight. Use the manure production table in this guide to estimate daily production. Multiply by the number of days you need to store manure without spreading. Add 20 percent for bedding, rain, and unexpected delays. Then divide by the pile height to get the footprint. For example, 100 cows at 1,200 pounds produce about 240 cubic feet of manure per day. For 210 days of storage, you need 50,400 cubic feet. Adding 20 percent gives 60,480 cubic feet. At an 8 foot pile height, the footprint is about 7,560 square feet, or roughly 87 by 87 feet.

What is the best way to control odors from a manure storage facility?

The best odor control is to keep the manure as dry and aerobic as possible. Solid manure with adequate bedding produces fewer odors than wet, compacted manure. Composting eliminates most odors by converting the material to a stable, earthy product. If you cannot compost, consider these steps: locate storage away from neighbors and prevailing winds, keep the pile surface dry by covering or roofing, turn the pile regularly to prevent anaerobic conditions, and apply manure promptly when fields are suitable. Some operations use odor control products, but these are not a substitute for good management.

Do I need a permit to build a manure storage facility?

Permit requirements vary widely by state and by the size of your operation. Many states require a permit for liquid manure storage structures or for operations above a certain animal count. Some counties require building permits for any permanent structure. Contact your state department of agriculture and your county planning office before you build. Even if a permit is not required, you should follow NRCS technical standards to ensure your facility meets environmental protection guidelines. Many cost share programs require adherence to these standards.

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• Cattle Head Gate Selection and Adjustment
• Beef Cattle Handling Facility Flow
• Beef Cattle Maternity Pen Design: Comfort and Monitoring

References

• Beef Cattle Research Council: https://www.beefresearch.ca/
• USDA APHIS Cattle Health: https://www.aphis.usda.gov/livestock-poultry-disease/cattle
• WOAH Terrestrial Animal Health Code: https://www.woah.org/en/what-we-do/standards/codes-and-manuals/terrestrial-code-online-access/
• FAO Animal Production and Health: https://www.fao.org/animal-production/en/
• WOAH (World Organisation for Animal Health): https://www.woah.org/en/home/

This article is educational and is not a substitute for veterinary diagnosis, treatment, public-health guidance, or regulatory reporting.