HydroLAKES lake · #68
Pontchartrain
Surface area
1 645,24km²
Avg depth
3,8m
Volume
6 334km³
Shoreline
205,2km
Administrative coverage
6 dept-equivalent regions (GADM L2)
- Saint TammanyLouisiana · United States610.01 km²37.1% of lake
- OrleansLouisiana · United States358.85 km²21.8% of lake
- JeffersonLouisiana · United States323.81 km²19.7% of lake
- Saint John the BaptistLouisiana · United States159.34 km²9.7% of lake
- Saint CharlesLouisiana · United States135.10 km²8.2% of lake
- TangipahoaLouisiana · United States56.34 km²3.4% of lake
8 intersecting protected areas
Bayou Sauvage
IUCN IVNational Wildlife Refuge
1.34 km² overlap
Marine Protected Area
1.34 km² overlap
Big Branch Marsh
IUCN VNational Wildlife Refuge
0.08 km² overlap
Marine Protected Area
0.04 km² overlap
State Wild or Scenic River
0.02 km² overlap
Tangipahoa River
IUCN VState Wild or Scenic River
0.01 km² overlap
State Park
0.00 km² overlap
Bayou Lacombe
IUCN VState Wild or Scenic River
0.00 km² overlap
Computed live · HydroLAKES × GADM × WDPA · cached after first hit.
Species present
2 104 distinct species · 195 789 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 35 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.
ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).
Indicateurs du tissu écologique
Tissu écologique de Pontchartrain : 24 espèces reliées par 78 interactions GloBI sur 3 types (connectance 12.4%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Lake statistics (HydroLAKES)
Surface
1 645,24km²
Avg depth
3,8m
Volume
6 334,000km³
Watershed
13 746km²
Shoreline
205,2km
Shore dev. idx
1,43
Residence time
254days
Elevation
0m
HydroLAKES v1.0 (Messager et al. 2016) · 1.4M lacs ≥ 0.1 km² mondialement.