Since 1993 there have been numerous significant legal developments affectin
g livestock grazing on public-land riparian areas in the western United Sta
tes. These include new regulations, standards, and guidelines for grazing o
n BLM lands and a series of judicial and administrative decisions applying
environmental statutes, such as the Endangered Species Act and the National
Environmental Policy Act, to public lands grazing. Legislative and judicia
l efforts by the livestock industry to counteract these developments have m
et with only limited success. The new legal developments have established a
set of substantive and procedural criteria that must be met before the BLM
or the Forest Service issues a grazing permit affecting a riparian area. E
nforcement of these criteria, however, will depend on the involvement of co
ncerned individuals and organizations at the local management level.