Figure 1. Study regions and approximate Forest Inventory and Analysis plot locations.

Coarse woody debris is typically measured on Phase 3 plots in the USDA Forest Service, Forest Inventory and Analysis program. In the Pacific Northwest (CA, OR, and WA) region, and west Texas, coarse woody debris was measured on all Phase 2 plots substantially increasing the observations (n = 16,323 and n = 5,403, respectively) in those regions.