The Wetland Team is in the process of developing a formal training/workshop on functional assessments, hydrogeomorphic (HGM) wetland classification, HGM functional assessments, development of rapid functional assessment models, use of data inputs into functional assessment to determine minimal effect, and use of data inputs and time/function calculations to determine appropriate minimal effect thresholds, mitigation requirements, and mitigation ratios.
Brinson, M. M. (1993). "A hydrogeomorphic classification for wetlands" (PDF, 5.5 MB) Technical Report WRP-DE-4, U.S. Army Engineer Waterways Experiment Station, Vicksburg, MS. NTIS No. AD A270 053.
The following are procedures for interim functional assessment are intended as examples for those in the process of developing their own procedures and to help bring about needed consistency between states and regions for interim functional assessment. These procedures are drafts and should not be referred to or cited as final.