HydroBASINS lev08 watershed · #7080048790
Bassin de Gulf Intracoastal Waterway
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 3 administrative regions : Aransas, Nueces, San Patricio
Sub-basin area
724,9km²
Upstream area
724,9km²
Discharge
0,17m³/s
Mean elev.
7m
Administrative coverage
3 dept-equivalent regions (GADM L2)
- 305.5 km²42.2% of basin
- 205.6 km²28.4% of basin
- 101.8 km²14.1% of basin
9 intersecting protected areas
Marine Protected Area
32.29 km² overlap
Mustang Island State Park
IUCN IVMarine Protected Area
15.56 km² overlap
Nature Preserve
5.51 km² overlap
Private Conservation Land
1.21 km² overlap
Pelican Island
IUCN VAudubon Society Preserve or Sanctuary
0.94 km² overlap
Shamrock Island Fee
IUCN VPrivate Conservation Land
0.91 km² overlap
Mustang Island Macrosite
IUCN VPrivate Conservation Land
0.44 km² overlap
Us-Tx-76-1
IUCN Not AssignedConservation Easement
0.34 km² overlap
Lydia Ann Island
IUCN VAudubon Society Preserve or Sanctuary
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 867 distinct species · 816 860 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 49 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 Gulf Intracoastal Waterway : 40 espèces reliées par 98 interactions GloBI sur 2 types (connectance 8.3%, filtre Serrano α=0.2). 9 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°
22,0°C
Annual rain
850mm
Moisture idx (CMI)
-0,36
Runoff
146mm/an
PET
1 331mm
AET
720mm
Mean slope
0,1°
Water table
30cm
Forest
10%
Crops
17%
Urban
8%
Protected
8%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)