Lafourche Parish, LA Elevation & Topographic Map

Topographic elevation map of Lafourche Parish, Louisiana, shaded from 18 ft below sea level on the northwest side to 68 ft on the north side
Elevation
68 ft 21 m47 ft 14 m36 ft 11 m14 ft 4 m−7 ft −2 m−18 ft −5 m
Zoom in for contour lines
USGS 3DEP · U.S. Census Bureau
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How to use this mapviews, tools and data
Elevation
Ground colored by height from green (lowest) to white (highest), with contour lines every 40–500 ft (USGS data).
Satellite
A 2016 satellite photo at 33 ft (10 m) detail; contours off.
3D
Tilt and turn the terrain; hills are raised 1.5×, or set ×1 for true height.
Click or tap anywhere
The exact elevation of that spot in ft and m.
Measure
Pick two points for the climb, descent and grade along a straight line.
Parish area
Fades everything outside the official parish boundary (US Census).

Elevation Data

Lafourche Parish averages about 1 ft (0 m) above sea level across all its land. Its ground runs from 18 ft below sea level on the northwest side to 68 ft on the north side.

Average elevation
1 ft 0 m
all land inside the parish
Highest
68 ft 21 m
on the north side
Lowest
−18 ft −5 m
on the northwest side

Lafourche Parish spans about 86 ft of height, so no single spot tells the whole story. The ruler shows where most of its land lies, and where the other numbers you'll see come from.

50% of Lafourche Parish's land lies below the average daily high tide (MHHW, NOAA), and 44% lies less than 3 ft above it. Check flood zones on FEMA's map

FigureElevation
Average of all land1 ft0 m
Highest point
Inside the parish, on the north side
68 ft21 m
Lowest point
Inside the parish, on the northwest side
−18 ft−5 m

Topographic Map

Topographic elevation map of Lafourche Parish, Louisiana, shaded from 18 ft below sea level on the northwest side to 68 ft on the north side
Parish boundary (dashed) over shaded terrain, with contours every 10 ft (3 m).
Location
Parish in Louisiana, United States
Population
95,342 2024 est.
Land area
1,069.7 sq mi + 398.7 sq mi water
Density
89 per sq mi
Time zone
Central UTC−6 / −5
Landform region
Coastal Plain 98%
Drains to
Gulf of America
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WebP, 1200 × 900. Free to use: credit “ElevationOf.com” with a link to this page.

Sources: U.S. Census Bureau, USGS

Nearby Places

Neighboring parishes sharing a border, by average

  1. St. James Parish5 ft
  2. Assumption Parish4 ft
  3. St. John the Baptist Parish4 ft
  4. St. Charles Parish2 ft
  5. Lafourche Parish1 ft
  6. Terrebonne Parish1 ft
  7. Jefferson Parish0 ft

Rankings by average elevation

All 16 towns in Lafourche Parish by typical elevation
  1. Thibodaux11 ft
  2. Bayou Country Club8 ft
  3. Lafourche Crossing5 ft
  4. Bayou Blue4 ft
  5. Lockport3 ft
  6. Raceland3 ft
  7. Mathews3 ft
  8. Larose2 ft
  9. Chackbay2 ft
  10. Lockport Heights1 ft
  11. Kraemer1 ft
  12. Choctaw1 ft
  13. Cut Off0 ft
  14. Golden Meadow0 ft
  15. Des Allemands partly−1 ft
  16. Galliano−1 ft
How we measure
  • Average: every USGS 3DEP bare-earth cell of land inside the Census parish boundary (TIGER/Line, Jan 1 2026), weighted equally, on a 2 arc-second (≈200 ft, 62 m) grid, coarsened from 1 arc-second so the whole area fits one run. Land means the boundary minus Census area water (on this grid, water areas of at least half a cell).
  • Highest and lowest: the highest land cell, re-read at 1 arc-second around the 25 highest grid cells. Lowest: the lowest land cell, re-read at 1 arc-second around the 25 lowest grid cells; coastal ground within 3 ft (1 m) of named tidal water counts as sea level.
  • Pits: the lowest point is the lowest ground outside closed hollows (quarry floors, mine pits, terrain-model artifacts): any hollow under 0.4 sq mi (1 km²), and any hollow under 2 sq mi (5 km²) whose floor is more than 100 ft (30 m) below its rim; and outside patches below sea level of under 0.4 sq mi (1 km²). The single lowest 3DEP cell, −28 ft at 29.5282° N, 90.5404° W, is in such a hollow or patch and is not counted.
  • Nearby Places: neighboring parishes and rankings use each one's average elevation, on its own grid, the same figure its page shows. Peaks and hills: the highest summits inside the parish with at least 980 ft (300 m) of prominence, then the highest federal (GNIS) summits inside it when there are fewer than 5; each is the 3DEP top on a ~7 ft (2 m) window, or the NGS published height when a usable survey mark sits within 160 ft (50 m) of it (shown as published).
  • Towns: each town's typical elevation (population-weighted median of its own 2020 blocks at 1 arc-second); a town is listed when any of its 2020 residents live in the parish.
  • Rounding: computed heights are rounded to 10 ft (5 m), or to 1 ft (1 m) under 100 ft; 3DEP is good to about a meter, not a foot. Published figures (NGS survey heights) are shown as their publisher gives them.
  • Datum: North American Vertical Datum of 1988 (NAVD 88). NGS plans to replace NAVD 88 with a new datum (NAPGD2022); heights will then shift slightly.
  • Sources: USGS 3DEP, GNIS, Watershed Boundary Dataset and physiographic provinces; U.S. Census Bureau (TIGER boundaries and water, 2020 blocks, 2024 population estimates, county adjacency); NOAA NGS survey heights; BTS time zones; NOAA tidal surfaces (MHHW). All public domain.