Forest Practices Code - Channel Assessment Procedure Guidebook
Figure 4. Method used to identify the mainstem at point of interest (POI). The mainstem channel includes the fourth order channel in the residual watershed and the third order channels in each of the three sub-basins (A, B, and C). Refer to either the Coastal Watershed Assessment Procedure Guidebook or the Interior Watershed Assessment Procedure Guidebook for guidelines to help determine stream order.
