Procedural Documents and Resources

Classification:
The hydrogeomorphic classification of wetlands is intended to lay a foundation for and support ongoing efforts to develop methods for assessing the physical, chemical, and biological functions of wetlands.
Brinson, M.M. 1993. A Hydrogeomorphic Classification for Wetlands. U.S. Army Corps of Engineers, Waterways Experiment Station, Vicksburg, MS, USA. Technical Report WRP-DE-4, U.S. Army Engineer Waterways Experiment Station, Vicksburg, MS.
Approach:
The approach includes a development and an application phase. The assessment procedure, as the final product, can be used to compare project alternatives, determine impacts, calculate mitigation requirements, etc.
Smith, D. R., Ammann, A., Bartoldus, C., and Brinson, M. M. (1995). "An approach for assessing wetland functions using hydrogeomorphic classification, reference wetlands, and functional indices," Technical Report WRP-DE-9, U.S. Army Engineer Waterways Experiment Station, Vicksburg, MS. NTIS No. AD A307 121.
Guidelines for Developing Regional Guidebooks:
Smith, R. D., Noble, C. V., and Berkowitz, J. F. (2013). "Hydrogeomorphic (HGM) Approach to Assessing Wetland Functions: Guidelines for Developing Guidebooks (Version 2)," ERDC/EL TR-13-11, U.S. Army Engineer Research and Development Center, Vicksburg, MS.

Berkowitz, J. F., Noble, C. V., and Wilson, Z. M. (2014). "Framework for the Data-Driven Geographical Expansion of Rapid Ecological Assessment Methods," ERDC TN-WRAP-14-1, U.S. Army Engineer Research and Development Center, Vicksburg, MS. NEW
Other Documents:
Brinson, M.M., F.R. Haner, L.C. Lee, W.L. Nutter, R.D. Rheinhardt, R.D. Smith, and D. Whigham. 1995. A Guide book for Application of Hydrogeomorphic Assessment to Riverine Wetlands. U.S. Army Corps of Engineers, Waterways Experiment Station,Vicksburg, MS, USA. Technical Report WRP-DE-11.

Brinson, MM., L.C. Lee, W. Ainslie, RD. Rheinhardt, G.G. Hollands, R.D. Smith, D.F.Whigham, and W.B. Nutter. Common Misconceptions of the Hydrogeomorphic Approach to Functional Assessment of Wetland Ecosystems: Scientific and Technical Issues. Bulletin of the Society of Wetland Scientists 17(2): 16-21.

Noble, C. V., Summers, E. A., and Berkowitz, J., F. (2014). "Validating the Operational Draft Regional Guidebook for the Functional Assessment of High-Gradient Ephemeral and Intermittent Headwater Streams in Western West Virginia and Eastern Kentucky," ERDC/EL TR-14-7, U.S. Army Engineer Research and Development Center, Vicksburg, MS.

Smith, RD. 1993. A Conceptual Framework for Assessing the Functions of Wetlands. U.S. Army Corps of Engineers, Waterways Experiment Station, Vicksburg, MS, USA. Technical Report WRP-DE-3.
Applications of HGM Results:

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Web Date: October 1997
Updated: February 2022