Supply Chain Sankey Diagram: Editable Template
A supply chain Sankey from suppliers through warehouses to sales channels, sized by volume. Edit the nodes and quantities to map your own distribution network.
A supply chain Sankey shows volume moving from suppliers through warehouses to the channels that sell it. It answers questions a network map cannot: which supplier feeds which warehouse, and which warehouse actually serves which channel.
The template has three suppliers, two warehouses and three channels. Every ribbon is a quantity of pallets in one period. A supplier that feeds both warehouses shows as two ribbons, so concentration and overlap are visible.
This is a different tool from a process flowchart. A flowchart documents how an order is processed; a Sankey shows how much product moves along each route. Use both: the flowchart for the process, the Sankey for the volumes.
How to read this diagram
- Supplier A provides 400 of 1,000 pallets, the largest single source.
- The central warehouse handles 600 pallets and the regional one 400; each is fed by all three suppliers.
- Retail is the biggest channel at 500, and it is served by both warehouses.
- The diagram shows volume, not lead time, cost or inventory held. It balances because every pallet received is shipped on.
The data behind it
Invented quantities in pallets for one period. Not data about any real network.
| From | To | Amount (pallets) |
|---|---|---|
| Supplier A | Central warehouse | 300 |
| Supplier A | Regional warehouse | 100 |
| Supplier B | Central warehouse | 200 |
| Supplier B | Regional warehouse | 150 |
| Supplier C | Central warehouse | 100 |
| Supplier C | Regional warehouse | 150 |
| Central warehouse | Retail | 350 |
| Central warehouse | Wholesale | 150 |
| Central warehouse | Online | 100 |
| Regional warehouse | Retail | 150 |
| Regional warehouse | Wholesale | 150 |
| Regional warehouse | Online | 100 |
The same data as CSV
source,target,value
Supplier A,Central warehouse,300
Supplier A,Regional warehouse,100
Supplier B,Central warehouse,200
Supplier B,Regional warehouse,150
Supplier C,Central warehouse,100
Supplier C,Regional warehouse,150
Central warehouse,Retail,350
Central warehouse,Wholesale,150
Central warehouse,Online,100
Regional warehouse,Retail,150
Regional warehouse,Wholesale,150
Regional warehouse,Online,100How it works
List suppliers, warehouses and channels
Add a row for each one. You do not place them: the flows put suppliers on the left and channels on the right.
Enter the volume on each route
Add a flow for every route that carries goods and give it the quantity for the period.
Look for concentration and imbalance
Wide ribbons into one node show dependence. A warehouse that receives more than it ships shows as a gap you can investigate.
Frequently asked questions
Can I show inventory that stays in a warehouse?
Yes. Add a flow from the warehouse to a node named Held in stock so the quantity that did not ship is visible.
What unit should I use?
Any one unit for the whole chart: pallets, units, tonnes or euros of goods. Mixed units in one chart are misleading.
Edit this supply chain Sankey
Open the template as your own chart and map your suppliers, warehouses and channels.