HydroBASINS lev08 watershed · #7080770530
Bassin de Atascosa 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 : Atascosa, Bexar, Frio, Medina
Sub-basin area
909,2km²
Upstream area
909,4km²
Discharge
1,28m³/s
Mean elev.
175m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- 752.1 km²82.8% of basin
- Medina78.1 km²8.6% of basin
- 61.0 km²6.7% of basin
- 16.8 km²1.9% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 165 distinct species · 16 324 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 41 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 Atascosa River : 31 espèces reliées par 81 interactions GloBI sur 4 types (connectance 9.0%, 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°
20,9°C
Annual rain
687mm
Moisture idx (CMI)
-0,57
Runoff
42mm/an
PET
1 592mm
AET
580mm
Mean slope
0,8°
Water table
131cm
Forest
1%
Crops
37%
Urban
1%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)