Lake · Louisiana

Lake Pontchartrain

-1 m-3 ft

Area: 1,639 km²
Max depth: 3 m
Tonight: 60°FClear · Wind 5–10 mph E

Lake Pontchartrain is a lake at -1 m above sea level in Louisiana, United States, 1,639 km² in area and 66.3 km long.

All facts

Surface elevation: -1 m
Length: 66.3 km
Shoreline: 251.6 km

Open the 3D view

3D map

Lake Pontchartrain 3D map

Drag to orbit · click, then scroll to zoom (or Ctrl/⌘ + scroll) · One finger scrolls the page · two fingers orbit and zoom · 20 × 20 km

Surface

Vertical scale

Topographic map

Lake Pontchartrain topographic map

1 m contours from the USGS 3DEP 10 m terrain model. Click two points on the map to draw your own cross-section.Tap two points on the map to draw your own cross-section.

Index contours every 5 mShowing west → east through the centre

Lake Pontchartrain elevation profile

West → east through the centre

Hover the profile to read elevation and distance.Tap or drag along the profile to read elevation and distance.

Downloads

Lake Pontchartrain downloads: topographic map, heightmap, STL 3D model and DEM

Free files made in your browser from this page's terrain data. No sign-up; credit the sources below.

Print & wall

JPGLake Pontchartrain satellite image (JPEG)Sentinel-2 true-colour image of the same area, taken 2026-09-23.

3D printing & 3D apps

GIS & GPS

</>Embed this mapPaste this into your site to show the interactive 3D terrain, with a credit link back here.

<iframe src="https://topolu.com/embed/lake-pontchartrain" width="100%" height="480" style="border:0" loading="lazy" allowfullscreen title="3D terrain of Lake Pontchartrain"></iframe>
<p><a href="https://topolu.com/lake-pontchartrain" rel="nofollow">Topolu</a></p>

Free to use with credit: see the data sources

Lake

Lake Pontchartrain in numbers

Shoreline from OpenStreetMap.

Shoreline: 251.6 km

Weather

Lake Pontchartrain weather

Tonight · Clear · 60°F (16°C) · Wind 5–10 mph E

Lake Pontchartrain forecast for about 0 m.

Tonight60°–5–10 mph E
Sat57°77°–10–15 mph E
Sun58°77°–10–15 mph E
Mon59°78°–10 mph E
Tue59°77°1%10 mph E
Wed57°78°2%10 mph E
Thu57°78°1%10 mph E

Forecast data: NOAA National Weather Service, public domain, model run Oct 23, 21:51 UTC.

Slope

Share of the 20 × 20 km view by steepness, from the 10 m model.

Mostly gentle: 100% of the view is under 15°.

Gentle, 0–15°

100.0%

Moderate, 15–30°

0.0%

Steep, 30–45°

0.0%

Cliffs, 45° and over

0.0%

Steeper than 30°: 0.0% of the 400 km² view
Relief in view: 19 m low point -1 m

Land cover

ESA WorldCover 10 m classification of the same area.

Water 68.6%Trees 21.8%Wetland 7.3%Grassland 1.7%Built-up 0.5%

Snow & ice means glaciers and year-round snow (a yearly average), not today’s snow cover.

Wildlife

Wildlife seen nearby

Sightings of the most-seen species on iNaturalist (research grade) within 10 km; 1,679 species recorded in all.

Sightings per species 6

American Alligator244
American white waterlily232
Fewflower milkweed232
Great Egret211
Red-cockaded Woodpecker179
Red-winged Blackbird178

Where it sits

Where Lake Pontchartrain sits

Nearby

Nearby places

Sources

Data sources

Terrain: U.S. Geological Survey, 3D Elevation Program (public domain)
Imagery: Contains modified Copernicus Sentinel data 2026 (scene 2026-09-23)
Land cover: © ESA WorldCover project 2021 / Contains modified Copernicus Sentinel data (2021) processed by ESA WorldCover consortium
Facts: Wikidata (CC0)
Wildlife: iNaturalist community observations, counts only
Forecast: Weather forecast from NOAA National Weather Service (public domain)
Sources: Wikidata · GeoNames · Wikipedia