HydroBASINS lev08 watershed · #7080762460
Bassin de Mississippi River
A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.
Crosses 13 administrative regions : Ascension, East Baton Rouge, East Feliciana, Iberville, Jefferson +8
Sub-basin area
2 700,1km²
Upstream area
3 178 850,5km²
Discharge
21 863,16m³/s
Mean elev.
8m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Thompson Creek719 km²
- Bassin de Mississippi River197 km²
13 dept-equivalent regions (GADM L2)
- 369.7 km²13.7% of basin
- 336.7 km²12.5% of basin
- 298.4 km²11.1% of basin
- 258.2 km²9.6% of basin
- 244.1 km²9.1% of basin
- 239.6 km²8.9% of basin
- Jefferson239.2 km²8.9% of basin
- 235.6 km²8.7% of basin
5 moreFull L2 list
- Saint Charles224.5 km² · 8.3%
- Orleans162.9 km² · 6.0%
- Saint Bernard76.9 km² · 2.9%
- Pointe Coupee11.1 km² · 0.4%
- East Feliciana0.2 km² · 0.0%
9 intersecting protected areas
Marine Protected Area
5.42 km² overlap
State Park
1.96 km² overlap
Bayou Segnette
IUCN IIIState Park
1.41 km² overlap
National Historical Park
1.39 km² overlap
State Capitol
IUCN IIIPark
1.26 km² overlap
Bluebonnet Swamp
IUCN VNature Center
0.14 km² overlap
Bayou Saint John
IUCN VState Wild or Scenic River
0.06 km² overlap
Bayou Labranche
IUCN VState Wild or Scenic River
0.01 km² overlap
State Wild or Scenic River
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
7 450 distinct species · 1 498 837 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 37 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 Bassin de Mississippi River : 25 espèces reliées par 82 interactions GloBI sur 4 types (connectance 12.3%, 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).
Hydroclimate (BasinATLAS lev08)
Mean T°
19,8°C
Annual rain
1 553mm
Moisture idx (CMI)
0,10
Runoff
727mm/an
PET
1 402mm
AET
1 200mm
Mean slope
0,4°
Water table
14cm
Forest
40%
Crops
16%
Urban
22%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)