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Philo

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DELINEATION OF SUBTERRANEAN STREAMS AND POTENTIAL STREAM DEPLETION AREAS

PHILO QUADRANGLE

Orrs Springs

Boonville

Ornbaun Valley

Navarro

Eureka Hill

Cold Spring Philo

Zeni Ridge

Bailey Ridge

1870000

1870000

1875000

1875000

1880000

1880000

6500

00 6500

00

6550

00 6550

00

6600

00 6600

00

INDEX TO USGS 7.5' QUADRANGLES

Basemap: Topographic Map 1:24,000 Scale (U.S. Geological Survey)

State Plane Coordinates, NAD 1983, California Zone 2, Feet

Mapped stream channel and associated alluvial depositswithin a potential stream depletion area. Wells pumping fromthese deposits are likely to result in greater and more immediate stream depletion.

Subterranean Flow

Note: Because the delineated areas on this map were basedon information readily available at the time of its development,this map does not claim to represent all of the subterraneanstreams or potential stream depletion areas that exist in the area. Site specific investigations will be needed to verify the existenceof subterranean streams or potential stream depletion areas.

4,000 0 4,0002,000 Feet «

Potential Stream Depletion Area

FEBRUARY 14, 2008

Manson, M.W., 1984, Geology and Geomorphic Features Related to Landsliding, Philo 7.5' Quadrangle, Mendocino County, California: DMG Open-File Report 84-43, reproduced on DMG CD 99-002, scale 1:24,000.

REFERENCE

PHILO

Note: Some of the delineated areas on this map do not match seamlessly with the delineated areas in adjoining quads because of differences in the geologic source maps that were used.