The Pamo Valley, formed by the confluence of Temescal and Santa Ysabel creeks, supports one of the least-disturbed examples of the southern California native landscape a mosaic of grassland, oak woodland (incl. Engelmann Oak), riparian woodland, chaparral and coastal sage scrub. Much of the valley floor is covered by ancient oak woodland underlain by White Sage scrub, believed by many to represent a dominant southern California vegetation community prior to the invasion of annual grassland. This habitat rises up nearly unbroken to Coulter/Jeffrey Pine woodland on higher ridges. Though surrounded by the Cleveland National Forest, it is largely owned by the City of San Diego, with much of the open space dedicated to grazing. Just north and west of the Pamo Valley lies the Guejito Ranch/Rodriguez Mtn. area, a large, contiguous block of privately-owned land that has received virtually no coverage by ornithologists.

Ornithological Summary

Most of the sensitive species of lowland southern California are found here, such as Grasshopper Sparrow and Tricolored Blackbird. This is about as far inland as the Diegan Coastal Sage Scrub bird community (Cactus Wren, California Gnatcatcher) occurs, and the extensive grasslands support good numbers of wintering raptors (though in lower numbers than Ramona Grasslands or Lake Henshaw). Along with Golden Eagle and Prairie Falcon, Peregrine Falcon is believed to breed in the Rodriguez Mtn. area, one of the few natural nesting sites for the species in southern California.

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Conservation Issues

Although there have been sporadic proposals through the years to dam Temescal and Santa Ysabel creeks and to site a county dump in Pamo Valley, none has succeeded (fide K. Weaver). However, this area contains very little public land, and therefore should be considered at some risk.

Ownership

Though surrounded by the Cleveland National Forest, it is largely owned by the City of San Diego, with much of the open space dedicated to grazing. Just north and west of the Pamo Valley lies the Guejito Ranch/Rodriguez Mtn. area, a large, contiguous block of privately-owned land.

Habitat

The Pamo Valley, formed by the confluence of Temescal and Santa Ysabel creeks, supports one of the least-disturbed examples of the southern California native landscape ? a mosaic of grassland, oak woodland (incl. Engelmann Oak), riparian woodland, chaparral and coastal sage scrub. Much of the valley floor is covered by ancient oak woodland underlain by White Sage scrub.