Regulations governing horse packing in wilderness areas vary significantly between different management agencies, specific wilderness designations, and geographic regions, and the packer's responsibility to research and comply with the rules for their specific destination before the trip is non-negotiable.
The most widely applicable regulation categories involve camp location requirements — how far camps must be located from water sources, typically 200 feet, from trails, and from other camps. These rules exist to protect riparian vegetation, prevent erosion, and preserve the wilderness experience for other users. In many wilderness areas, stock camps must also be located a minimum distance from any lake or stream.
Certified weed-free forage requirements apply in many western wilderness areas and national parks to prevent the introduction of invasive plant species that can be transported on hay. Packers who feed hay to their animals in these areas must use certified weed-free hay and may be required to carry documentation of certification. Carrying capacities and party size limits for stock also apply in some wilderness areas, restricting the number of animals per party.