Plizio Visual Lab
Lake Pontchartrain

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Water temperature…
Lake Pontchartrain, situated immediately north of New Orleans, Louisiana, is not a true lake but rather a massive, highly dynamic brackish estuary covering over 630 square miles. It is directly connected to the massive Gulf of Mexico via the Rigolets strait, resulting in a highly complex ecological mixing zone where freshwater heavily collides with tidal marine currents. The massive, shallow basin averages only 12 to 14 feet in depth. It acts as an incredibly critical massive buffer zone against storm surges, heavily tested during catastrophic events like Hurricane Katrina. The lake is also deeply famous for the Lake Pontchartrain Causeway, a massive 23.8-mile continuous bridge that ranks among the longest over-water spans globally.
- Location: United States
- Nearby: Memphis (6 km)
Best time to visit & climate
The most pleasant time to visit is Apr, Oct, Nov.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg °C | 12 | 14 | 17 | 21 | 25 | 28 | 29 | 29 | 27 | 22 | 17 | 14 |
| Rain mm | 98 | 107 | 105 | 128 | 119 | 176 | 173 | 190 | 129 | 105 | 77 | 128 |
📋 Practical info
Geography
Facts
- A massive, shallow brackish estuary, not a true freshwater lake.
- Covers an incredibly vast surface area of 630 square miles.
- Averages a highly shallow depth of merely 12 to 14 feet.
- Deeply connected to the Gulf of Mexico through the Rigolets.
- The massive Causeway bridge stretches continuously for 23.8 miles.
- Functions as a highly critical, massive hydrological storm buffer.
Explore nearby
Notable places around
Route planner — Car & Motorhome
Where do you start? We build the route here, with stops and country notes along the way.
© OpenStreetMap contributors · OpenRouteService
Sights in the town Lake Pontchartrain (1)
Sights nearby
Frequently asked questions
Can you swim in the lake?
What is the famous bridge?
Are there alligators there?
Can you fish there?
How far is it from New Orleans?
Lake Pontchartrain: where is it located?
Lake Pontchartrain: when is the best time to visit?
Lake Pontchartrain: why is it worth visiting?










