Any use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply endorsement by the 

U.S. Government

This map was printed on an electronic plotter directly from digital files. Dimensional calibration may vary between electronic plotters 

and between X and Y directions on the same plotter, and paper may change size due to atmospheric conditions; therefore, scale and 

proportions may not be true on plots of this map.

For sale by U.S. Geological Survey, Information Services, Box 25286, Federal Center, Denver, CO 80225, 1–888–ASK–USGS

Digital files available at http://pubs.usgs.gov/sim/3302/

Suggested Citation: Golden, N.E., Cochrane, G.R., and Krigsman, L.M., 2014, Ground-truth studies, Offshore of Coal Oil Point map area, 

California, sheet 6 in Johnson, S.Y., Dartnell, P., Cochrane, G.R., Golden, N.E., Phillips, E.L., Ritchie, A.C., Kvitek, R.G., Dieter, B.E., 

Conrad, J.E., Lorenson, T.D., Krigsman, L.M., Greene, H.G., Endris, C.A., Seitz, G.G., Finlayson, D.P., Sliter, R.W., Wong, F.L., Erdey, M.D., 

Gutierrez, C.I., Leifer, I., Yoklavich, M.M., Draut, A.E., Hart, P.E., Hostettler, F.D., Peters, K.E., Kvenvolden, K.A., Rosenbauer, R.J., and 

Fong, G. (S.Y. Johnson and S.A. Cochran, eds.), California State Waters Map Series—Offshore of Coal Oil Point, California: U.S. 

Geological Survey Scientific Investigations Map 3302, pamphlet 57 p., 12 sheets, scale 1:24,000, http://dx.doi.org/10.3133/sim3302.

ISSN 2329-132X (online)

http://dx.doi.org/10.3133/sim3302

Figure 6. USGS-designed camera sled being launched off research vessel for ground-truth studies. Components onboard sled 

include four digital video camcorders, one 8-megapixel digital SLR camera, lasers for scale, and various strobe and video 

lights, as well as telemetry instrumentation that records depth, altitude, and compass heading.

#

^

^

^

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DISCUSSION

Between 2006 and 2009, the seafloor in the Offshore of Coal Oil Point map area in southern California was mapped by California 

State University, Monterey Bay (CSUMB), and the U.S. Geological Survey (USGS), using both multibeam echosounders and bathymetric sidescan-sonar units (see sheets 1, 2, 3). These mapping missions combined to collect bathymetry and acoustic-backscatter data 

from about the 10-m isobath to out beyond the 3-nautical-mile limit of California’s State Waters. In order to characterize the bathymetry and acoustic-backscatter data into geologically and biologically useful information, the USGS ground-truth-surveyed the data by 

towing camera sleds (fig. 6) over specific locations throughout the map area. 

The ground-truth-surveys occurred on four separate cruises over a four-year period. The camera sleds were towed 1 to 2 m over 

the seafloor, at speeds of between 1 and 2 nautical miles/hour. During the 2006 and 2007 ground-truth cruises, a smaller USGS camera 

sled was used that housed two standard-definition (640×480 pixel resolution) video cameras; one was forward looking, and the other 

was downward looking. The video was relayed in real time to the research vessel, where USGS and National Oceanic and Atmospheric Administration (NOAA) scientists recorded both the geologic and biologic character of the seafloor once every minute, using 

programmable keypads. During the 2008 and 2009 ground-truth cruises, a larger camera sled was used that housed the two standarddefinition video cameras (one forward looking, the other downward looking), as well as a high-definition (1,080×1,920 pixel resolution) video camera and an 8-megapixel digital still camera, which captured a digital still photograph once every 30 seconds. The 

location and directions of the camera-sled tracklines were chosen in order to visually inspect areas thought to represent the full range 

of bottom hardness and rugosity in the map area.

In the context of marine-fisheries management, benthic-habitat complexity can be divided into abiotic (geologic) and biotic 

(biologic) components. Benthic-habitat complexity refers to the visual classification of local abiotic and biotic vertical relief and 

structure that may provide potential refuge for both juvenile and adult forms of various species. Only abiotic attributes (primary- and 

secondary-substrate composition) were used in the production of the seafloor-character map on sheet 5. Classifications of primary and 

secondary substrate are based on the Wentworth (1922) scale of sediment grain-size categories, and the sand, cobble, and boulder sizes 

are classified as in Wentworth (1922). However, the difficulty in distinguishing the finest divisions in the Wentworth (1922) scale 

during video observations made it necessary to aggregate some grain-size classes: the granule and pebble sizes have been grouped 

together into a class called “gravel,” and the clay and silt sizes have been grouped into a class called “mud.” In addition, hard bottom 

and clasts larger than boulder size are classified as “rock.” Primary and secondary substrate, by definition, constitute greater than 50 

and 20 percent of the seafloor during an observation, respectively.

This sheet contains a smaller, simplified (depth-zone symbology has been removed) version of the seafloor-character map (sheet 

5), on which the camera-sled tracklines used to ground-truth-survey the sonar data are indicated by aligned colored dots, each dot 

representing the location of a recorded observation. Primary- and secondary-substrate compositions are shown by differently colored 

dots. The map also shows the locations of the detailed views of seafloor character along some of the tracklines (Boxes A through E) 

that are highlighted on this sheet (figs. 1A through 5A, respectively). Also shown are locations of samples (triangles) from usSEABED 

(Reid and others, 2006) that were used to supplement the ground-truth surveys. The seafloor-character map shows that this area is 

predominantly covered by sediment, but it also includes an oil platform and areas of rocky outcrops. 

Each detailed view (figs. 1A through 5A) shows the locations of camera-sled tracklines (aligned colored dots), as well as of the 

photographs (colored stars) taken along the tracklines. These photographs, which are representative of the seafloor, are displayed with 

a description of the observed seafloor characteristics recorded by USGS and NOAA scientists (figs. 1B through 1E; 2B, 2C; 3B 

through 3H; 4B, 4C; 5B through 5L). Only primary and secondary substrates are reported, although individual photographs may show 

more substrate types. Organisms, when present, are labeled on the photographs.

 Ground-truth surveys in the Offshore of Coal Oil Point map area include approximately 14.87 trackline kilometers of video and 

333 still photographs, in addition to 615 seafloor observations of abiotic and biotic attributes. A visual estimate of slope also was 

recorded.

GLOSSARY

Rugosity—A GIS-derived characterization of seafloor roughness, calculated as the ratio of the three-dimensional surface area of 

seafloor to the two-dimensional planar-base area, for each cell in the bathymetry grid.

Backscatter intensity—The amplitude of the reflected sonar signal (see sheet 3) used to infer the hardness of the bottom, determined after sonar-data processing has removed (as much as possible) the effects of water depth, angle of reflection, and bottom 

roughness.

Biocomplexity—The assessment of the presence or absence of biological structures that have the potential of providing shelter for 

fauna, determined by estimating the scale, the amount, and the morphology of biological relief (as described by Tissot and others, 

2006).

Biocover—The visual estimate of the proportion of biologic cover by encrusting organisms: high, greater than 50 percent; 

moderate, between 50 percent and 10 percent; low, less than 10 percent.

REFERENCES CITED 

Reid, J.A., Reid, J.M., Jenkins, C.J., Zimmerman, M., Williams, S.J., and Field, M.E., 2006, usSEABED—Pacific Coast (California, 

Oregon, Washington) offshore surficial-sediment data release: U.S. Geological Survey Data Series 182, available at 

http://pubs.usgs.gov/ds/2006/182/.

Tissot, B.N., Yoklavich, M.M., Love, M.S., York, K., and Amend, M., 2006, Benthic invertebrates that form habitat on deep banks off 

southern California, with special reference to deep sea coral: Fishery Bulletin, v. 104, p. 167–181.

Wentworth, C.K., 1922, A scale of grade and class terms for clastic sediments: Journal of Geology, v. 30, p. 377–392.

EXPLANATION

Substrate class

Fine- to medium-grained smooth sediment—Low backscatter, low rugosity; typically mud to medium-grained sand; 

often rippled and (or) burrowed

Mixed smooth sediment and rock—Moderate to very high backscatter, low rugosity; typically coarse-grained sand, 

gravel, cobbles, and bedrock

Rock and boulder, rugose—High backscatter, high rugosity; typically boulders and rugose bedrock

Anthropogenic material—Related to development by humans

Location of real-time video observation and interpreted substrate class of seafloor

Fine- to medium-grained smooth sediment—Low backscatter, low rugosity; typically mud to medium-grained sand; 

often rippled and (or) burrowed

Mixed smooth sediment and rock—Moderate to very high backscatter, low rugosity; typically coarse-grained sand, 

gravel, cobbles, and bedrock

Rock and boulder, rugose—High backscatter, high rugosity; typically boulders and rugose bedrock

Location of digital still photograph and interpreted substrate class of seafloor

Fine- to medium-grained smooth sediment—Low backscatter, low rugosity; typically mud to medium-grained sand; 

often rippled and (or) burrowed 

Mixed smooth sediment and rock—Moderate to very high backscatter, low rugosity; typically coarse-grained sand, 

gravel, cobbles, and bedrock

Rock and boulder, rugose—High backscatter, high rugosity; typically boulders and rugose bedrock

Interpreted substrate class depicted in digital still photograph—Indicated by colored frame around photograph (not 

shown on map; shown in figures only)

Fine- to medium-grained smooth sediment—Low backscatter, low rugosity; typically mud to medium-grained sand; 

often rippled and (or) burrowed

Mixed smooth sediment and rock—Moderate to very high backscatter, low rugosity; typically coarse-grained sand, 

gravel, cobbles, and bedrock

Rock and boulder, rugose—High backscatter, high rugosity; typically boulders and rugose bedrock

Sample localities

From usSEABED (Reid and others, 2006)

Area of “no data”—Areas near shoreline not mapped owing to insufficient high-resolution seafloor mapping data; areas 

beyond 3-nautical-mile limit of California’s State Waters were not mapped as part of California Seafloor Mapping 

Program

3-nautical-mile limit of California’s State Waters

CALIF.

0 4 8 Nautical Miles

Kilometers 0 5 10

120° 119°40' 119°20' 119°

34°

34°20'

MAP LOCATION

Ventura

Santa Barbara

Anacapa

Island

Santa Cruz Island Santa Rosa Island

Area of

Map

Santa Barbara Channel

Limit of California’s

State Waters

1

U.S. Geological Survey;

2

National Oceanic and Atmospheric Administration, National Marine Fisheries Service

Ground-Truth Studies, Offshore of Coal Oil Point Map Area, California

By

Nadine E. Golden,1 Guy R. Cochrane,1 and Lisa M. Krigsman2

2014

11 Cam24_Tape25 Image 4124 -40m 15 cm

d

br

Figure 5L. Digital still photograph no. E11 (see fig. 5A for location). Sand and 

mud (water depth, 40 m). Abiotic complexity is low, biotic complexity is absent, 

and biocover is low. Biocover includes burrows (br). Also labeled on photo is 

depression (d). Distance between lasers (green dots) is 15 cm.

10Cam2_Tape2 Image 0616 -70m 15 cm

beg

sc

cc

spo

Figure 5K. Digital still photograph no. E10 (see fig. 5A for location). Rock and thin 

sand, adjacent to rock outcrop (water depth, 70 m). Abiotic complexity is low, 

biotic complexity is absent, and biocover is moderate. Biocover includes cup 

coral (cc); sponge (spo); blackeye goby, Rhinogobiops nicholsii (beg); and sea 

cucumber (sc). Distance between lasers (green dots) is 15 cm.

Cam2_Tape2 Image 0614 -71m 9 15 cm

beg

rf

bls

dw

cc

h

Figure 5J. Digital still photograph no. E9 (see fig. 5A for location). Fractured, 

blocky rock outcrop (water depth, 71 m). Abiotic complexity is moderate, biotic 

complexity is absent, and biocover is high. Biocover includes cup coral (cc); 

blood star, Henricia leviuscula (bls); halfbanded rockfish, Sebastes semicinctus

(rf); blackeye goby, Rhinogobiops nicholsii (beg); hydroid (h); and drift weed 

(dw). Distance between lasers (green dots) is 15 cm.

Cam2_Tape2 Image 0613 -71m 8 15 cm

cc

sc

Figure 5I. Digital still photograph no. E8 (see fig. 5A for location). Sand and 

cobbles, adjacent to rock outcrop (water depth, 71 m). Abiotic complexity is low, 

biotic complexity is absent, and biocover is moderate. Biocover includes cup 

coral (cc); California sea cucumber, Parastichopus californicus (sc); and 

scattered shells (ss). Distance between lasers (green dots) is 15 cm. 

7 Cam2_Tape1 image 0596 -73m 15 cm

sc

Figure 5H. Digital still photograph no. E7 (see fig. 5A for location). Mud and sand 

(water depth, 73 m). Abiotic complexity is low, biotic complexity is absent, and 

biocover is low. Biocover includes sea cucumber (sc). Distance between lasers 

(green dots) is 15 cm.

Cam2_Tape2 Image 0592 -74m 6 15 cm

Figure 5G. Digital still photograph no. E6 (see fig. 5A for location). Mud and sand 

(water depth, 74 m). Abiotic complexity is low, biotic complexity is absent, and 

biocover is low. Distance between lasers (green dots) is 15 cm.

Cam2_Tape2 Image 0583 -76m 5 15 cm

sdb

t

Figure 5F. Digital still photograph no. E5 (see fig. 5A for location). Sand and mud 

with isolated cobbles (water depth, 76 m). Abiotic complexity is low, biotic 

complexity is absent, and biocover is low. Biocover includes Pacific sanddab, 

Citharichthys sordidus (sdb); and tunicate (t). Distance between lasers (green 

dots) is 15 cm.

15 cm 4 Cam2_Tape2 Image 0572 -83m

cc

tw

Figure 5E. Digital still photograph no. E4 (see fig. 5A for location). Sand and 

cobbles, adjacent to rock outcrop (water depth, 83 m). Abiotic complexity is low, 

biotic complexity is absent, and biocover is low. Biocover includes cup coral 

(cc) and tubeworm (tw). Distance between lasers (green dots) is 15 cm.

Cam2_Tape1 Image 0537 -83m 3 15 cm

cc

sc

bs sst

Figure 5D. Digital still photograph no. E3 (see fig. 5A for location). Sand and 

cobbles, adjacent to rock outcrop (water depth, 83 m). Abiotic complexity is low, 

biotic complexity is absent, and biocover is moderate. Biocover includes cup 

coral (cc), sea cucumber (sc), brittle star (bs), and sea star (sst). Distance 

between lasers (green dots) is 15 cm.

15 cm 2 Cam2_Tape1 Image 0515 -89m

rf

Figure 5C. Digital still photograph no. E2 (see fig. 5A for location). Shell hash, in 

mud and sand (water depth, 89 m). Abiotic complexity is low, biotic complexity 

is absent, and biocover is low. Biocover includes rockfish (rf). Distance 

between lasers (green dots) is 15 cm.

15 cm 1Cam2_Tape1 Image 0502 -96m

su

br

Figure 5B. Digital still photograph no. E1 (see fig. 5A for location). Mud and sand 

with scattered shell fragments, on outer shelf (water depth, 96 m). Abiotic 

complexity is low, biotic complexity is absent, and biocover is low. Biocover 

includes burrows (br) and sea urchin (su). Distance between lasers (green dots) 

is 15 cm.

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^_ E11 E10^_

^_E9 E8 ^_

^_ E7 E6 ^_

E5^_

E4 ^_

E3 ^_

E2 ^_

E1 ^_

Box E Figure 5A. Detailed view of seafloor character mapped south of Goleta Point, approximately 3.5 

km offshore (see Box E, on map, for location), showing locations of periodic real-time video 

observations (dots) and digital still photographs (stars; see figs. 5B through 5L) from camera 

line CAM2, cruise S–W1–09–SC.

ss

2 Cam15_Tape8 Image 1331 -155m 15 cm

Figure 4C. Digital still photograph no. D2 (see fig. 4A for location). Gravel, sand, 

and shells, on failure surface of Goleta landslide complex (water depth, 155 m). 

Abiotic complexity is low, biotic complexity is absent, and biocover is low. 

Distance between lasers (green dots) is 15 cm.

Cam15_Tape8 Image 1301 -90m 15 cm 1

br c

cf

bs

Figure 4B. Digital still photograph no. D1 (see fig. 4A for location). Sand and mud 

with scattered shells, on outer shelf (water depth, 90 m). Abiotic complexity is 

low, biotic complexity is absent, and biocover is low. Biocover includes burrows 

(br), crab (c), brittle star (bs), and combfish (cf). Distance between lasers (green 

dots) is 15 cm.

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^_ D1

Box D

Figure 4A. Detailed view of seafloor character mapped south of Naples, approximately 5.5 km 

offshore (see Box D, on map, for location), showing locations of periodic real-time video 

observations (dots) and digital still photographs (stars; see figs. 4B, 4C) from camera line 

CAM15, cruise S–W1–09–SC.

15 cm 7 Cam14_Tape8 Image 1274 -77m

sas

cc br

bs

n

Figure 3H. Digital still photograph no. C7 (see fig. 3A for location). Sand and mud 

with isolated cobbles, adjacent to rock outcrop (water depth, 77 m). Abiotic 

complexity is low, biotic complexity is absent, and biocover is moderate. 

Biocover includes burrows (br), sand star (sas), cup coral (cc), nudibranch (n), 

and brittle star (bs). Distance between lasers (green dots) is 15 cm.

15 cm 6 Cam14_Tape8 Image 1261 -78m

cc g rf

spo

h

tw

bs

Figure 3G. Digital still photograph no. C6 (see fig. 3A for location). Layered and 

fractured rock (water depth, 78 m). Abiotic complexity is moderate, biotic 

complexity is present, and biocover is high. Biocover includes cup coral (cc); 

hydroid (h); halfbanded rockfish, Sebastes semicinctus (rf); sponge (spo); 

tubeworm (tw); brittle stars (bs); and gorgonian (g). Distance between lasers 

(green dots) is 15 cm.

15 cm 5 Cam14_Tape8 Image 1251 -78m

n

cc

h

g

br

sp

bs

tr

tt

Figure 3F. Digital still photograph no. C5 (see fig. 3A for location). Sand and mud, 

adjacent to rock outcrop (water depth, 78 m). Abiotic complexity is low, biotic 

complexity is present, and biocover is moderate. Biocover includes burrows 

(br), cup coral (cc), brittle star (bs), gorgonian (g), hydroid (h), nudibranch (n), 

tracks (tr), trails (tt), and tall sea pen (sp). Distance between lasers (green dots) 

is 15 cm.

4 15 cm Cam14_Tape7 Image 1274 -79m

o

sp

bs

dw br

Figure 3E. Digital still photograph no. C4 (see fig. 3A for location). Sand and mud, 

adjacent to rock outcrop (water depth, 79 m). Abiotic complexity is low, biotic 

complexity is absent, and biocover is moderate. Biocover includes burrows (br), 

sea pen (sp), drift weed (dw), octopus (o), and brittle star (bs). Distance 

between lasers (green dots) is 15 cm. 

3 15 cm Cam14_Tape7 Image 1192 -86m

rf

sst

cc

Figure 3D. Digital still photograph no. C3 (see fig. 3A for location). Sand and rock 

with scattered shells (water depth, 86 m). Abiotic complexity is low, biotic 

complexity is absent, and biocover is moderate. Biocover includes cup coral 

(cc); halfbanded rockfish, Sebastes semicinctus (rf); and sea star (sst). Distance 

between lasers (green dots) is 15 cm. 

2 Cam14_Tape7 Image 1190 -86m 15 cm

cc

sdb

sst

Figure 3C. Digital still photograph no. C2 (see fig. 3A for location). Mud and sand 

with scattered shells, adjacent to rock outcrop (water depth, 86 m). Abiotic 

complexity is low, biotic complexity is absent, and biocover is moderate. 

Biocover includes cup coral (cc); Pacific sanddab, Citharichthys sordidus (sdb); 

and sea star (sst). Distance between lasers (green dots) is 15 cm.

15 cm 1Cam14_Tape7 Image 1187 -87m

sc

cc bs

sst

Figure 3B. Digital still photograph no. C1 (see fig. 3A for location). Sand and mud 

with scattered shells, adjacent to rock outcrop (water depth, 87 m). Abiotic 

complexity is low, biotic complexity is absent, and biocover is high. Biocover 

includes cup coral (cc), sea cucumber (sc), sea star (sst), and brittle star (bs). 

Distance between lasers (green dots) is 15 cm. 

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C7^_

C6 ^_

C5^_

C4^_

C3^_

C2 ^_

C1^_

Box C

Figure 3A. Detailed view of seafloor character mapped southwest of Naples, approximately 5 

km offshore (see Box C, on map, for location), showing locations of periodic real-time video 

observations (dots) and digital still photographs (stars; see figs. 3B through 3H) from camera 

line CAM14, cruise S–W1–09–SC.

15 cm

br

Figure 2C. Digital still photograph no. B2 (see fig. 2A for location). Mud and sand 

(water depth, 61 m). Abiotic complexity is low, biotic complexity is absent, and 

biocover is low. Biocover includes burrows (br). Distance between lasers (red 

dots are just out of view in this image but are visible in previous video frame) is 

15 cm.

1 Cam48_Tape45 Image 5097 -64m 15 cm 2 Cam48_Tape45 Image 5118 -61m

br

sp

bs

Figure 2B. Digital still photograph no. B1 (see fig. 2A for location). Mud and sand 

(water depth, 64 m). Abiotic complexity is low, biotic complexity is absent, and 

biocover is moderate. Biocover includes burrows (br), sea pen (sp), and brittle 

star (bs). Distance between lasers (red dots are just out of view in this image 

but are visible in previous video frame) is 15 cm.

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^_

B2

^_B1

Box B Figure 2A. Detailed view of seafloor character mapped between Naples and Coal Oil Point, 

approximately 3 km offshore (see Box B, on map, for location), showing locations of periodic 

real-time video observations (dots) and digital still photographs (stars; see figs. 2B, 2C) from 

camera line CAM48, cruise S–1C–08–SC.

4 Cam10_Tape 10 Image 90 -36m 15 cm

Figure 1E. Digital still photograph no. A4 (see fig. 1A for location). Sand and 

mud, at edge of shelf-terrace flank (water depth, 36 m). Abiotic complexity is 

low, biotic complexity is absent, and biocover is low. Distance between lasers 

(green dots) is 15 cm.

3Cam10_Tape 10 Image 89 -25m 15 cm

Figure 1D. Digital still photograph no. A3 (see fig. 1A for location). Sand and 

mud, at edge of shelf terrace (water depth, 25 m). Abiotic complexity is low, 

biotic complexity is absent, and biocover is low. Distance between lasers 

(green dots) is 15 cm.

15 cm 2 Cam10_Tape 10 Image 7C -20m

Figure 1C. Digital still photograph no. A2 (see fig. 1A for location). Sand with 

wave ripples (water depth, 20 m). Abiotic complexity is low, biotic complexity is 

absent, and biocover is low. Distance between lasers (green dots) is 15 cm.

15 cm

Figure 1B. Digital still photograph no. A1 (see fig. 1A for location). Sand with 

slightly degraded wave ripples (water depth, 16 m). Abiotic complexity is low, 

biotic complexity is absent, and biocover is low. Biocover includes minor cover 

of algae (a). Distance between lasers (green dots) is 15 cm.

1Cam10_Tape 10 Image 66 -16m

a

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A3

A2

A1

Box A

Figure 1A. Detailed view of seafloor character mapped south of Naples, approximately 1 km 

offshore (see Box A, on map, for location), showing locations of periodic real-time video 

observations (dots) and digital still photographs (stars; see figs. 1B through 1E) from camera 

line CAM10, cruise Z–1–07–SC. 

ONE MILE = 0.869 NAUTICAL MILES

1 0.5 0 1 KILOMETER

7000 3500 0 7000 FEET

2 1 0 2 MILES

SCALE 1:50 000

APPROXIMATE MEAN

DECLINATION, 2014

MAGNETIC NORTH

12 / ° 1 2

TRUE NORTH

Onshore elevation data from NOAA Coastal Services Center 

(data collected by EarthData International in 2002-2003) and 

from U.S. Army Corps of Engineers (data collected by Fugro 

Pelagos in 2009). Offshore shaded-relief bathymetry from 

map on sheet 2, this report. California's State Waters limit 

from NOAA Office of Coast Survey

Universal Transverse Mercator projection, Zone 11N

NOT INTENDED FOR NAVIGATIONAL USE

Seafloor-character map simplified from map on sheet 5, this 

report. Video observations recorded and digital still photographs taken in 2006-2009. Sample localities from usSEABED 

(Reid and others, 2006) 

GIS database and digital cartography by Nadine E. Golden 

and Eleyne L. Phillips

Edited by Taryn A. Lindquist

Manuscript approved for publication June 2, 2014

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119°50'

119°50'

119°55'

119°55'

120°

120°

34°30'

34°25'

34°25'

E

D

C B

A

Goleta Point

Coal Oil Point

Isla Vista

Goleta

Naples

Scientific Investigations Map 3302

Sheet 6 of 12

Pamphlet accompanies map

U.S. Department of the Interior

U.S. Geological Survey