HydroBASINS lev08 watershed · #7080048420
Bassin de Tres Palacios 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 4 administrative regions : Calhoun, Jackson, Matagorda, Wharton
Sub-basin area
2 561,2km²
Upstream area
2 561,2km²
Discharge
1,35m³/s
Mean elev.
14m
Administrative coverage
4 dept-equivalent regions (GADM L2)
- 1058.8 km²41.4% of basin
- Jackson709.2 km²27.7% of basin
- 531.2 km²20.8% of basin
- Calhoun150.9 km²5.9% of basin
10 intersecting protected areas
Mad Island Macrosite Fee
IUCN VPrivate Conservation Land
24.87 km² overlap
Us-Tx-132-3
IUCN Not AssignedConservation Easement
3.93 km² overlap
Mad Island
IUCN VWildlife Management Area
2.26 km² overlap
Marine Protected Area
2.19 km² overlap
Us-Tx-132-2
IUCN Not AssignedConservation Easement
1.55 km² overlap
Reserve Program
1.23 km² overlap
Us-Tx-132-4
IUCN Not AssignedConservation Easement
0.67 km² overlap
Reserve Program
0.39 km² overlap
Sundown Island
IUCN VAudubon Society Preserve or Sanctuary
0.12 km² overlap
1 more protected areassorted by overlap area
Palacios Wetla
IUCN VWetland
0.11 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 858 distinct species · 503 600 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 46 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 Tres Palacios River : 39 espèces reliées par 74 interactions GloBI sur 3 types (connectance 7.1%, filtre Serrano α=0.2). 7 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°
20,9°C
Annual rain
1 094mm
Moisture idx (CMI)
-0,21
Runoff
404mm/an
PET
1 385mm
AET
926mm
Mean slope
0,1°
Water table
8cm
Forest
10%
Crops
57%
Urban
1%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)