[Code of Federal Regulations]
[Title 15, Volume 3]
[Revised as of January 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 15CFR921.3]

[Page 96]
 
                  TITLE 15--COMMERCE AND FOREIGN TRADE
 
CHAPTER IX--NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION, DEPARTMENT 
                               OF COMMERCE
 
PART 921_NATIONAL ESTUARINE RESEARCH RESERVE SYSTEM REGULATIONS--Table of Contents
 
                            Subpart A_General
 
Sec. 921.3  National Estuarine Research Reserve System Biogeographic 
Classification Scheme and Estuarine Typologies.

    (a) National Estuarine Research Reserves are chosen to reflect 
regional differences and to include a variety of ecosystem types. A 
biogeographic classification scheme based on regional variations in the 
nation's coastal zone has been developed. The biogeographic 
classification scheme is used to ensure that the National Estuarine 
Research Reserve System includes at least one site from each region. The 
estuarine typology system is utilized to ensure that sites in the System 
reflect the wide range of estuarine types within the United States.
    (b) The biogeographic classification scheme, presented in appendix 
I, contains 29 regions. Figure 1 graphically depicts the biogeographic 
regions of the United States.
    (c) The typology system is presented in appendix II.