Examples include much of the Embudo and Bear, Hahn, and lower Piedras Marcadas Arroyos. They can accommodate trails and some active recreation. The second category is the Open Space Link Arroyos. These channels have the potential to link major Open Space areas such as the Sandia Foothills, Bosque, and West Mesa Open Space. Examples include Piedras Marcadas, South Pino, Amole, Pajarito, and La Cueva Arroyos.
Prescribed treatments can include hard lining, rip-rap, or other channel treatments.
The third category is Open Space Arroyos. The plan mandates that these arroyos be maintained as natural channels wherever possible. The Callabacillas and portions of the Tijeras Arroyos and parts of some other arroyos fit into this category. The Tijeras is the largest, and the Callabacillas is the second largest arroyo in the metropolitan area. The Arroyo Facility Plan mandates that Open Space arroyos will be maintained in their natural state with little or no structural improvement.