Our Service Area (illustrated on the picture to the left) goes along the San Andreas fault rift zone from Gorman to the West on I-5 to the Mormon Rocks area near I-15 and Highway 138 (see picture to the left). THC works to preserve the best natural resources between the High Desert and the foothills of the San  Gabriel Mountains, beginning in our community. Watershed, aquifer recharge, wildlife corridors, scenic vistas and unique biodiversity need protection from sprawling urbanization and housing developments. Ephemeral streams replenish our Fossil Ground Water and are currently unprotected in the Mojave Desert. These need to be protected so that during the winter clean melt water can percolate into the aquifer where all our drinking water comes from.

Our Pinon Hills project is on the upstream portion of the Sheep Creek Wash.  This is where our drinking water infiltrates into our aquifer. The satellite picture below illustrates the alluvial fan of Sheep Creek Wash that goes all the way to the El Mirage Dry Lake bed, and illustrates the lateral displacement of the wash over time. “Sheep Creek Wash overlies an active alluvial fan and the stream channel can move across the fan surface through time. Along Sheep Creek Wash, the most rapid infiltration occurs in upstream reaches near the mountain front. Sheep Creek Wash flows as a result of precipitation and runoff in the San Gabriel Mountains, and surface flows in the wash are larger and more frequent near the mountain front...” (Izbicki study) (circled area). The area near this wash provides good quality drainage into the wash. This watershed must be protected.

Sheep Creek Watershed. Picture taken by satellite.

Flash flood - Sheep Creek
Without warning thunderstorms in Wrightwood can lead  to dangerous situations in Sheep Creek Wash.

Transition Habitat Conservancy
P.O. Box 720026
Pinon Hills, CA 92372
Tel.: 760-868-5136
Fax: 760-868-2097
Jill@TransitionHabitat.org

Transition Habitat Conservancy

Conserving wildlife, scenic vistas, pristine landscapes, and biological diversity where the San Gabriel mountains meet the High desert

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