True - not every single public tree in Madison was part of the inventory. This was due to cost, and also time.
Trees in the Engineering Division's stormwater greenway areas were not in the part of the inventory. For example, the Kenosha Greenway on Madison's west side is heavily wooded, but it does not appear on this inventory.
And we could not afford to inventory every single tree in every Madison park. That's why you'll notice some parks might have fewer marks for trees on them than what you would expect.
University & Other Municipalities
We also only serve the City of Madison - so the University of Wisconsin property, or other municipalities (like the Village of Shorewood Hills) will not have trees on this map.