If your workflows feel like a tangled mess of emails, delays, and unclear ownership, you’re not alone. Most businesses, nonprofits, and government agencies struggle with inefficient processes. Process mapping can make a dramatic difference, and using a powerful visual tool called a Swimlane Map can cut through the chaos and uncover exactly what’s happening (and not happening) in your workflows.
What Is a Swimlane Map?
A Swimlane Map—also known as a Swimlane Diagram—is a type of process map that organizes tasks and decisions into “lanes” based on who performs each step. Each swimlane typically represents a role, function, department, or individual. The swim lane map organizes the process steps into the swim lanes, using arrows to show the process flow, and data and color coding to visualize process information.
Why Swimlane Mapping Works
The swim lane map allows the user to visualize the process, including its flow, participants, relevant data, and information. Teams can use the maps to analyze why issues and wastes occur and as a means to brainstorm and visualize possible solutions. This facilitates:
- Visualization: Gives the team a systematic objective picture of the process that lets them see each step, including who and what is involved.
- Accuracy: Helps team determine exactly who is doing what when in the process.
- Waste Identification: Makes waste in the process more visible.
- Root Cause Analysis: Combines data and visuals to help identify the root causes of waste and eliminate bottlenecks and redundancies.
- Brainstorming: Helps teams plan and visualize target conditions for the process, comparing the merits of different solutions.
- Validation: Provides a way to demonstrate proof-of-concept for process changes and identify possible roadblocks before piloting and implementing solutions.
Who Should Use Swimlane Maps?
These diagrams aren’t just for Six Sigma Black Belts. They’re useful for:
- Government agencies: Streamline permitting, inspections, grants
- Legal firms: Improve intake, case management, and billing
- IT departments: Visualize support workflows and reduce ticket backlog
- Healthcare: Map patient intake, discharge, and referral processes
- Education: Track student support services or grant approval processes
How to Create a Swimlane Map: Step-by-Step
Step 1: Assign Swimlanes to Roles or Functions
Start with the process customer in the top lane. This is the person or group who ultimately benefits from the process (like a client, end user, or applicant). Then, add the people or departments involved in delivering the process in order of contact.
Common Swimlane Categories
- By individual – useful in small teams
- By department – ideal for cross-functional projects
- By vendor/client – useful for external partnerships
Example:
In a city government permitting process:
- Resident submits application
- Clerk logs and reviews it
- Planning Department assesses zoning issues
- Inspector conducts site visit
- Manager approves or rejects
Each of these becomes a lane—clearly separating who owns which part of the process.
Pro tip: You’ll often discover unexpected players involved. Be ready to add swimlanes!
Step 2: Place Steps and Decision Points in the Right Lanes
Add each task to the lane of the person who performs it. Follow the order it happens in the real world. Don’t prettify it—capture what ACTUALLY happens. This is the key to mapping the current state of the process in a swim lane map: genchi genbutsu, or “real place, real thing.” The goal is an accurate usable map of what is really going on in the current process.
Use These Shapes:
Ovals (pill shapes) for Start and End
Rectangles for Process Steps
Diamonds for Decision Points
Every decision point should show at least two possible outcomes, each with its own arrow. These points don’t always involve an actual “decision” by a person, but can also represent places where the process branches based on some criteria.
Example:
A help desk request might look like:
- Customer submits a ticket (Customer lane)
- Technician triages issue (IT Support lane)
- Decision: Can it be resolved remotely? (diamond shape)
- Yes: Fix remotely (Support lane)
- No: Dispatch technician (Field Tech lane)
Step 3: Connect the Steps with Arrows
Use arrows to show the flow of activity from step to step, across swimlanes when necessary. Tools like Lucidchart, Visio, or even Google Drawings make this easy—but double-check that the software’s automatic arrows actually reflect the correct flow.
Include:
Straight arrows between steps
Branching arrows from decision points
Loops or feedback arrows where tasks repeat
Example:
In a customer complaint process, a loop arrow might show that if an apology email doesn’t resolve the issue, it loops back to a supervisor for review.
Step 4: Analyze & Improve: What to Do Next
After your Swimlane Map is complete, make it a process improvement powerhouse by adding data and identifying issues and wastes. Then you can utilize it to dig for root causes by combining it with a fishbone diagram, as well as to brainstorm and compare what solutions might look like.
Add Timing Data and Rates
- Cycle times (how long each step takes): place these inside the boxes
- Lag times (delays between steps): place these along the arrows
- Rates and Throughput (numbers or ratios of types of things in the process): place these in the decisions and steps
This gives you visibility into not just what’s happening, but how long everything takes.
Example:
- Submitting a form: 2 min
- Clerk reviewing form: 3 min
- Waiting for supervisor approval: 5 days
- Throughput of 50 application per week
- 25 percent rejection rate
Identify Waste and Inefficiencies
Use your Swimlane Map to flag:
- Rework loops (e.g., paperwork returned due to errors)
- Excess handoffs (e.g., 6 people reviewing the same document)
- Idle time (e.g., waiting for approvals)
Put these waste points right on the map or document them in a “parking lot” sidebar.
Dig Deeper with Root Cause Tools
To prioritize improvements, pair your Swimlane Map with:
- Fishbone Diagrams (Ishikawa) to find causes of bottlenecks
- Pareto Charts to visualize which issues cause the most delay
Example:
If 80 percent of your customer delays come from missing documents, the combination of a Swimlane Map with timing and rate data and a Pareto Chart to visualize those metrics will make it painfully obvious, and a Fishbone Diagram will then help you get to the root cause of those missing documents and find a solution.
Ready to Map Your Way to Improvement?
Swimlane Maps give you more than a visual—they give you a mirror into how your process actually works.
Whether you’re in city government, a growing startup, or a Fortune 500 firm, Swimlane Maps can move your process from chaos to clarity.