How to Map Golf Course Irrigation Systems with GIS

A golf course irrigation system is one of the most complex pieces of infrastructure on the property — and one of the most under-documented. Most courses have irrigation as-built drawings from installation, but those drawings are often years out of date, stored in a filing cabinet, or only in the memory of a technician who left three seasons ago.

Mapping your irrigation system with GIS changes that. It gives you a live, searchable, shareable record of every head, valve, pipe run, and pump station — accessible on any device, from the maintenance shed or the 14th fairway.

Why Irrigation Mapping Matters

An undocumented irrigation system creates real operational risks:

• Emergency repairs take longer when the crew can't locate a broken main line without digging
• Water waste goes undetected when uneven head coverage isn't visible on a map
• New staff can't operate efficiently without a spatial reference for the system they're managing
• Renovation projects create conflicts when nobody knows where pipes run under proposed new tee boxes

A mapped irrigation system addresses all of these.

What to Include in an Irrigation Map

A complete golf course irrigation map should include these layers:

Heads

Individual sprinkler head locations mapped as point features. Each head should have attributes for:

• Head type and model number
• Nozzle size
• Throw radius
• Zone/circuit assignment
• Last maintenance or replacement date

Pipe Network

The main line, lateral lines, and spur connections drawn as line features. Include pipe diameter and material as attributes. Older courses may have mixed-diameter and mixed-material pipe runs — this is exactly the kind of information that's critical during emergency repair decisions.

Valve Zones

Polygon or point features marking each irrigation zone and its corresponding valve location. Link each zone polygon to the heads it controls and the controller address it runs from.

Controller Locations

Point features for satellite controllers and the central computer, with connection type and any known connectivity issues noted.

Pump Station

Point or polygon marking the pump house, with attributes for pump model, flow rate, and service history.

Step-by-Step: Building the Map in Atlas

Step 1: Gather Existing Documentation

Before drawing anything new, collect:

• Original installation as-built drawings (even if outdated)
• Any GPS surveys done by irrigation technicians
• Controller software exports that list zone names and head counts
• Any CAD files from irrigation designers

Import what you can directly into Atlas. Most irrigation design software can export KML, DXF, or CSV — all of which Atlas accepts.

Step 2: Set Up Your Layer Structure

Create dedicated layers:

• Irrigation - Main Line
• Irrigation - Lateral Lines
• Irrigation - Heads
• Irrigation - Valve Zones
• Irrigation - Controllers
• Irrigation - Pump Station

Keeping these separate lets you toggle individual system components on and off without losing context.

Step 3: Map Heads Using GPS

If you don't have as-built drawings, the most reliable method is GPS survey. Walk each hole with a GPS device or smartphone running a location capture app, and mark each head as you physically locate it. Import the resulting CSV into Atlas and you have an instant head layer.

For smartphones, Atlas's field data collection features let you drop pins directly from the course, label them with head attributes, and sync back to the map — no office session required.

Step 4: Draw Pipe Runs

Using the satellite basemap in Atlas, trace pipe routes along the paths you know or can identify from old drawings. Even approximate routing is valuable — a line that says "main line runs approximately here" is far more useful than no information at all.

As you or your technicians confirm exact routes (typically when digging for repairs), update the line geometry to reflect actual positions.

Step 5: Delineate Valve Zones

Draw polygons showing the coverage area of each valve zone. Overlay this against your turf polygon layer (fairways, greens, tees) to visually check where zones overlap and where gaps exist.

Under-coverage zones — areas where turf polygons extend beyond any zone polygon — flag potential dry spots. Over-lapping zones that both run during the same program sequence may indicate inefficiency.

Step 6: Add Maintenance History as Attributes

Every head, valve, and pipe segment in Atlas can carry attribute data. Build a habit of updating attributes after every service event:

• Head replaced: update model, date, and nozzle size
• Valve repaired: add repair date and parts used
• Leak found: add location notes and resolution date

Over time, this creates a maintenance history that dramatically speeds up troubleshooting. When a zone shows inconsistent coverage, you can check its attribute history before even walking the course.

Using Irrigation Maps for Coverage Analysis

Once your heads are mapped as points, Atlas lets you visually analyze coverage by comparing head locations against turf area polygons. Heads clustered at one end of a fairway with sparse coverage at the other end become immediately visible.

For more precise analysis, export your head locations to a spreadsheet and calculate throw-radius overlap against fairway width. Bring the results back into Atlas as a color-coded analysis layer.

Sharing the Map with Your Team

An irrigation map is only useful if the people who need it can access it. In Atlas:

• Irrigation technicians get full edit access to update head and valve information
• The superintendent gets view access for planning and budgeting
• The club manager or board can view a simplified overview layer showing system extent
• Contractors doing renovation work get a temporary shared link with pipe routing visible so they know where not to dig

Atlas maps are accessible on mobile — meaning the technician responding to an emergency at 6am can pull up the valve zone map on their phone before they leave the maintenance shed.

Irrigation Mapping for Water Efficiency Reporting

Many golf courses are under increasing pressure to report on water use and demonstrate responsible management. A GIS-based irrigation map supports this by:

• Documenting total irrigated area per zone
• Linking applied water volumes to specific fairway or green polygons
• Supporting before-and-after analysis when upgrading to precision irrigation heads
• Providing spatial evidence for certification programs like GEO (Golf Environment Organisation)

An irrigation map isn't just an operational tool — it's documentation for the environmental performance story your course needs to tell.