HydroBASINS lev08 watershed · #7080767020
Bassin de Medina 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 6 administrative regions : Atascosa, Bandera, Bexar, Kendall, Kerr +1
Sub-basin area
2 782,9km²
Upstream area
2 783,2km²
Discharge
8,18m³/s
Mean elev.
408m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
6 dept-equivalent regions (GADM L2)
- 1352.8 km²48.7% of basin
- 634.1 km²22.8% of basin
- Medina517.5 km²18.6% of basin
- 170.3 km²6.1% of basin
- Kendall65.0 km²2.3% of basin
- 39.8 km²1.4% of basin
11 intersecting protected areas
State Natural Area
15.26 km² overlap
Bandera Canyonlands Fee
IUCN VPrivate Conservation Land
8.23 km² overlap
Government Canyon
IUCN VState Park
7.03 km² overlap
Bandera Canyonlands
IUCN VEasement
4.02 km² overlap
Easement
2.74 km² overlap
Bandera Pass
IUCN VEasement
2.21 km² overlap
Medina River
IUCN VNatural Area
2.07 km² overlap
Bandera Canyonlands
IUCN VPrivate Conservation Land
1.90 km² overlap
Medina River
IUCN VNatural Area
0.90 km² overlap
2 more protected areassorted by overlap area
Laredo-Culebra
IUCN VCity Preserve
0.44 km² overlap
Government Canyon
IUCN VState Natural Area
0.40 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 584 distinct species · 319 411 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 Medina River : 22 espèces reliées par 73 interactions GloBI sur 4 types (connectance 13.0%, 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°
19,5°C
Annual rain
730mm
Moisture idx (CMI)
-0,52
Runoff
101mm/an
PET
1 514mm
AET
618mm
Mean slope
3,4°
Water table
328cm
Forest
58%
Crops
15%
Urban
3%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)