After the counting, sorting and identifications is complete the benthic macroinvertebrate collections are
assessed using six metrics. An overall stream score is determined using reference formulas or point system.
Visit the Level-1 section to review the Level-1 method.
Level-3 uses smiliar metrics as above but invertebrates must be identified to the family level. These
evaluations require an advanced level of expertise. Review a Level-3 lab bench sheet.
Resources