HydroBASINS lev08 watershed · #7080048490
Bassin de Garcitas Creek
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 6 administrative regions : Aransas, Calhoun, Dewitt, Jackson, Lavaca +1
Sub-basin area
2 628,5km²
Upstream area
2 628,5km²
Discharge
0,22m³/s
Mean elev.
18m
Administrative coverage
6 dept-equivalent regions (GADM L2)
- Calhoun1093.2 km²41.6% of basin
- 1071.5 km²40.8% of basin
- Jackson330.9 km²12.6% of basin
- 18.0 km²0.7% of basin
- 1.7 km²0.1% of basin
- 0.0 km²0.0% of basin
7 intersecting protected areas
Aransas
IUCN IVNational Wildlife Refuge
236.03 km² overlap
Marine Protected Area
236.01 km² overlap
Reserve Program
50.37 km² overlap
Marine Protected Area
50.25 km² overlap
Guadalupe Delta
IUCN VWildlife Management Area
11.02 km² overlap
Powderhorn Lake Complex
IUCN VEasement
9.06 km² overlap
Welder Flats
IUCN VWildlife Management Area
5.24 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 412 distinct species · 350 796 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 45 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 Garcitas Creek : 40 espèces reliées par 81 interactions GloBI sur 2 types (connectance 7.8%, filtre Serrano α=0.2). 6 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°
21,2°C
Annual rain
991mm
Moisture idx (CMI)
-0,28
Runoff
329mm/an
PET
1 380mm
AET
838mm
Mean slope
0,1°
Water table
10cm
Forest
17%
Crops
36%
Urban
1%
Protected
8%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)