One of my clients is looking at old growth forests in Oregon, and sent me over to the Pacific Northwest Interagency Monitoring Program to acquire some Late Successional and Old Growth (LSOG) base grids for acreage calculations. The data are coded very nicely into categories of average tree diameter, single or multiple canopy, and coniferous/deciduous/mixed. It made it pretty easy to separate the older growth forests from the rest of the data. And in this case, as in some other examples I’ve shown, good data = good cartography. We can start to get a great sense of the landscape of the Hood River/Mount Hood region.