Land Area Change in Coastal Louisiana: A Multidecadal Perspective (from 1956 to 2006)

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Land Area Change in Coastal Louisiana A
Multidecadal Perspective (from 1956 to 2006)
Presentation to accompany Scientific
Investigations Map 3019

• By John A. Barras, Julie C. Bernier, and
• Robert A. Morton

Suggested citation Barras, J.A., Bernier, J.C.,
and Morton, R.A., Land area change in coastal
LouisianaA multidecadal perspective (from 1956
to 2006) U.S. Geological Survey Scientific
Investigations Map 3019, scale 1250,000, 14 p.
pamphlet. See pamphlet for references cited.
U.S. Department of the Interior U.S. Geological
Survey
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Figure 1. Map of common study area composed of
overlapping data coverage in the 1956 and 1978
land and water data sets and those of the 2000
Landsat Thematic Mapper data set used in the
Louisiana Coastal Area (LCA) Study (Barras and
others, 2003). Also shown are fastlands, which
are excluded from calculations of net changes in
land area.
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• Figure 2. Annual rates of land area change in
  coastal Louisiana,
• 19562006.

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• Figure 3. Net land area change by period and
  province, 19562006.

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Figure 4. Linear regressions of land area change
trends in coastal Louisiana by physiographic
province,19852006. (Negative measurements
indicate land loss, while positive measurements
indicate land gain.)
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Figure 4. Linear regressions of land area change
trends in coastal Louisiana,19852006.
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• Figure 4. Linear regressions of land area change
  trends in the Deltaic Plain, 19852006.

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• Figure 4. Linear regressions of land area change
  trends in the Marginal Deltaic Plain, 19852006.

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• Figure 4. Linear regressions of land area change
  trends in the Chenier Plain, 19852006.

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Land Area Change in Coastal Louisiana A
Multidecadal Perspective (from 1956 to 2006)
Deltaic Plain
Lake Pontchartrain
Lake Borgne
Chandeleur Sound
Breton Sound
Barataria Bay
Terrebonne Bay
West Bay
East Bay
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Land Area Change in Coastal Louisiana A
Multidecadal Perspective (from 1956 to 2006)
Marginal Deltaic Plain
Vermilion Bay
West Cote Blanche Bay
Freshwater Bayou
Gulf of Mexico
Atchafalaya River
Atchafalaya Bay
Gulf of Mexico
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Land Area Change in Coastal Louisiana A
Multidecadal Perspective (from 1956 to 2006)
Chenier Plain
Sabine Lake
Calcasieu Lake
Grand Lake
White Lake
Gulf of Mexico
Freshwater Bayou
Gulf of Mexico
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Figures

• The following figures are from
• Barras, J.A., 2007, Satellite images and aerial
  photographs of the effects of Hurricanes Katrina
  and Rita on coastal LouisianaU.S. Geological
  Survey Data Series 281, http//pubs.usgs.gov/ds/20
  07/281

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Barras, 2007 (fig. 1)
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Barras, 2007 (fig. 2A)
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Barras, 2007 (fig. 3A)
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Barras, 2007 (fig. 5A)
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Barras, 2007 (fig. 7A)
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Barras, 2007 (fig. 8A)
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Barras, 2007 (fig. 3D)
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Barras, 2007 (fig. 9)
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Barras, 2007 (fig. 19A)
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Barras, 2007 (fig. 19B)
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Barras, 2007 (fig. 19C)
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Barras, 2007 (fig. 13A)
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Barras, 2007 (fig. 13B)
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Barras, 2007 (fig. 13C)
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Barras, 2007 (fig. 14A)
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Barras, 2007 (fig. 14B)
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Barras, 2007 (fig. 14C)
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Barras, 2007 (fig. 15A)
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Barras, 2007 (fig. 15B)