Feedlot Site Selection, Drainage and Earthworks: What to Assess First

Site decisions set the project up

A feedlot site is more than the area where pens will sit. The fall of the land, soil behaviour, runoff pathways, vehicle access, separation from neighbours and the space needed for supporting infrastructure all influence whether a concept can be developed into a practical operation. These are high-consequence decisions because changing levels, drainage routes or access after construction can be difficult and costly.

Before design drawings, earthworks or a construction quote are locked in, a property owner should understand the site questions that need investigation and the specialist advice that may be required. This guide is not engineering, environmental or approvals advice. It is a practical briefing tool for a preliminary site conversation.

For the broader service and build scope, see Frontier Rural’s cattle feedlot construction information. This article concentrates on the earlier site, drainage and earthworks investigation rather than competing with that service page.

1. Start with the operating plan and the whole site

A site cannot be assessed in isolation from the proposed operation. The intended cattle numbers, turnover, feed system, handling needs, road use, water source, by-product handling and likely future stages all affect the land area and the relationship between facilities. A preliminary concept should show more than pens: it should include access, feed and service areas, drainage infrastructure, water, handling and any separation areas that may be relevant.

Meat & Livestock Australia’s Feedlot Design Manual treats site selection, site investigations, earthworks, pen and drainage systems, roads, water and handling facilities as connected design subjects. That is a useful framework: a site that seems convenient for one element may create problems for another.

• Describe the feedlot’s purpose, cattle flow and likely operating pattern.
• Mark existing roads, buildings, yards, water sources, creeks, dams, drainage lines and services on an aerial image or plan.
• Identify areas already known to stay wet, erode, bog or concentrate runoff after rain.
• Note the future change most likely to matter, such as additional pens, storage or handling capacity.

If the basic operating brief is still being developed, begin with the small cattle feedlot design planning checklist.

2. Read the landform before setting levels

Landform determines how water, cattle and machinery move across a site. A useful first review looks beyond the apparent flatness of a paddock. Natural falls, low points, ridges, existing drains, upstream catchments and the likely route of water during a significant rainfall event all need to be understood. The question is not simply whether the pens can be made level; it is how the completed system will shed water and remain workable.

A site visit may identify where a survey, soil investigation or other technical input is needed. It should also consider whether the proposed arrangement would force water, feed traffic or cattle movement through the same constrained area. Those conflicts are easier to address before the layout is fixed.

3. Investigate soils and the proposed pen surface

Soil conditions affect earthworks, compaction, surface performance, trafficability and the way water behaves across a finished site. Existing fill, variable ground, dispersive or reactive material, rock, shallow subsoil or a high-water area can materially change the civil scope. These issues should be investigated by suitably qualified people where required, rather than assumed from neighbouring work or surface appearance.

The pen surface and the earthworks beneath it should be considered together with drainage, cleaning and machinery access. A construction team needs a clear, site-specific design and specification before it can determine the required preparation, material handling and compaction approach. Avoid asking for a like-for-like earthworks price without confirming what the ground and design actually require.

4. Separate clean water from feedlot runoff

One of the first drainage questions is where water comes from and what it has contacted. Clean runoff from outside the feedlot area needs to be considered separately from runoff generated within pens and associated working areas. The NSW EPA guidance notes that clean runoff should be prevented from entering the feedlot complex, while runoff from the feedlot is directed through the appropriate treatment and holding components. The arrangement for a particular property must be designed around its site, proposal and approvals.

This distinction affects the whole layout: upslope diversion, pen grades, drains, road crossings, sediment control, collection points and the space reserved for downstream infrastructure. It is not a detail to leave until the end of earthworks.

• Map upstream catchments and the likely paths of clean water across the property.
• Identify the areas that may generate contaminated runoff, including pens and relevant working areas.
• Ask how the preliminary layout keeps those flows separate and where each path is intended to go.
• Allow for drainage infrastructure and safe access to maintain it.

5. Treat drainage and holding systems as a connected design

Drainage needs to work in wet conditions, not only on a dry concept plan. The site arrangement should account for water moving from the pen surface into drains and then through the required collection, sedimentation and holding components. MLA’s design material separately addresses pen drainage, sediment removal and holding ponds, which reflects the need to consider the complete pathway.

The relevant capacity, levels, treatment and management arrangements are site-specific. They depend on the layout, catchment, rainfall assumptions, surface design and regulatory context. An engineer, environmental specialist or other qualified adviser may need to design or review this work. Do not copy pond sizes, slopes or drainage details from another feedlot as a substitute for a site design.

6. Plan earthworks as part of the system, not a stand-alone cut and fill job

Earthworks establish the platform for pens, roads, drainage and service areas. They can involve clearing, stripping, cut and fill, placement of suitable material, shaping, compaction, drainage construction and final surfaces, but the exact scope depends on the approved design and site findings. A good preliminary brief explains what needs to function when the work is finished, not just how much ground needs to move.

When discussing earthworks, ask where imported or surplus material would be managed; how finished levels connect with drains and access; how machinery will work on the site; and what verification or technical oversight is required. This keeps the earthworks package aligned with the operational layout rather than creating a pad that later conflicts with roads or runoff controls.

7. Check access, roads and working space in all conditions

Feed deliveries, livestock movements, maintenance, cleaning and emergency access all need room to operate. Map truck approach, turning, unloading, routine feed routes, staff access and the path used by cleaning or maintenance equipment. Consider where vehicles wait, reverse or cross cattle movement. A layout that works in good weather may be unsuitable when roads are wet or a delivery arrives during normal operations.

Internal roads and crossings also interact with drainage. They should be part of the civil and operational planning, with levels and water paths resolved together. The MLA manual lists access and internal roads alongside earthworks and drainage for good reason.

8. Consider neighbours, prevailing conditions and sensitive uses early

Feedlots can give rise to off-site issues such as odour and dust, so their location relative to neighbours and other sensitive uses needs early consideration. NSW EPA guidance explains that council land-use planning and development approval processes influence initial siting, and highlights the importance of considering sensitive neighbours and appropriate separation. The relevant requirements and assessment method can vary with the proposal and location.

At an early stage, map nearby residences, public roads, watercourses and other land uses, then discuss the proposal with the appropriate council and qualified advisers. Also consider the prevailing conditions that may influence day-to-day operation, including weather exposure and dust movement. This is not an exercise in selecting a generic buffer distance; it is about identifying issues early enough to assess them properly.

9. Confirm planning, environmental and specialist inputs before committing

Planning and environmental requirements are site-specific. In NSW, the regulator and approval pathway can depend on the scale and characteristics of the proposal, while local government has an important role in land-use planning and development assessment. The NSW EPA guidance should be read as general environmental context, not as a project approval checklist.

Before construction is programmed, confirm current requirements with the relevant council, regulator and qualified advisers. The project team may need input from a planner, engineer, surveyor, geotechnical consultant, environmental specialist, hydraulic designer or other adviser depending on the site and proposed development. Keep the resulting information, assumptions and drawings coordinated so the construction scope reflects the design that has been assessed.

A site-visit checklist for a preliminary feedlot assessment

Bring enough information to make the first site discussion useful. The aim is not to replace specialist design work; it is to identify constraints, information gaps and a sensible sequence for the next decisions.

• A property plan or aerial image with the possible feedlot area marked.
• The intended operating model, cattle numbers and likely future stages.
• Known wet-weather, runoff, soil, erosion or access issues.
• Existing water sources, services, roads, yards, buildings and drainage features.
• Locations of nearby residences, roads, watercourses and other sensitive uses.
• Any existing survey, soil information, approvals, concept drawings or adviser reports.
• Questions for the project team about drainage pathways, earthworks sequence, access and required specialist inputs.

Request a preliminary feedlot site assessment

A productive next step is a preliminary site and scope discussion that connects the operating plan with landform, access, drainage, earthworks and the information still needed. Frontier Rural can discuss the construction scope for a feedlot project in its service area, while the relevant advisers address design, planning, approvals and specialist matters required for the site. Bringing the material in this checklist makes that conversation more useful from the outset.

Once the site direction is clear, the next construction decisions include feedlot pen fencing and layout and feedlot water and trough infrastructure.