Channel Assessment Procedure Field Guidebook: Figure 9b.

Channel Assessment Procedure Field Guidebook

Figure 9b. Field indicators of channel disturbance-bank features.

Field
code Description Typical photograph

Field indicators: banks

B1 Abandoned channels. Abandoned and/or isolated back or side channels that show signs of colonization by riparian vegetation and have accumulated some forest litter. Typical of degrading channels with an RP morphology (although may occasionally occur in CP morphology).

B2 Eroding banks. Recently exposed bank material or lack of undercut associated with the bank. Typical of aggrading RP and CP morphologies.

B3 Avulsions. Similar to B1 although mainstem channels are abandoned and/or isolated when the channel shifts laterally. Typical of aggrading RP and CP morphologies.


Field code	Description	Typical photograph

Field indicators: banks
B1	Abandoned channels. Abandoned and/or isolated back or side channels that show signs of colonization by riparian vegetation and have accumulated some forest litter. Typical of degrading channels with an RP morphology (although may occasionally occur in CP morphology).
B2	Eroding banks. Recently exposed bank material or lack of undercut associated with the bank. Typical of aggrading RP and CP morphologies.
B3	Avulsions. Similar to B1 although mainstem channels are abandoned and/or isolated when the channel shifts laterally. Typical of aggrading RP and CP morphologies.