NAACC Assessment Protocol
Trained Lead Observers certified to assess crossings use a uniform protocol throughout the thirteen states region.
This protocol includes observations of the crossing (for example road type, flow condition, crossing alignment) and of the structure itself (for example material, shape, dimensions).
The Stream Crossing Survey Data Form Instruction Guide explains this survey protocol. The field data forms are available in paper, as well as for use with Windows, and iOS devices.
Measuring structure slope