HydroBASINS lev08 watershed · #7080769860
Bassin de Seco 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 4 administrative regions : Bandera, Frio, Medina, Uvalde
Sub-basin area
930,4km²
Upstream area
930,7km²
Discharge
1,26m³/s
Mean elev.
341m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- Medina739.2 km²79.6% of basin
- 81.4 km²8.8% of basin
- 72.5 km²7.8% of basin
- 36.1 km²3.9% of basin
2 intersecting protected areas
Bandera Canyonlands
IUCN VEasement
0.40 km² overlap
Reserve Program
0.14 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
714 distinct species · 7 747 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 38 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 Seco Creek : 30 espèces reliées par 82 interactions GloBI sur 4 types (connectance 10.5%, filtre Serrano α=0.2). 10 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°
20,2°C
Annual rain
656mm
Moisture idx (CMI)
-0,57
Runoff
47mm/an
PET
1 542mm
AET
555mm
Mean slope
2,5°
Water table
293cm
Forest
46%
Crops
22%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)