HydroBASINS lev08 watershed · #7080739470
Bassin de San Saba 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 : Concho, Mason, McCulloch, Menard, San Saba +1
Sub-basin area
2 860,6km²
Upstream area
5 017km²
Discharge
6,7m³/s
Mean elev.
589m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de San Saba River529 km²
- Bassin de Rocky Creek282 km²
6 dept-equivalent regions (GADM L2)
- Menard1520.8 km²53.2% of basin
- 616.6 km²21.6% of basin
- Mason398.2 km²13.9% of basin
- 319.2 km²11.2% of basin
- 2.4 km²0.1% of basin
- 0.8 km²0.0% of basin
3 intersecting protected areas
Mason Mountain
IUCN VWildlife Management Area
3.92 km² overlap
Reserve Program
0.66 km² overlap
San Saba River
IUCN VEasement
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 759 distinct species · 38 434 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 42 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 San Saba River : 35 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 82 interactions GloBI sur 4 types (connectance 9.5%, 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°
17,9°C
Annual rain
629mm
Moisture idx (CMI)
-0,59
Runoff
46mm/an
PET
1 539mm
AET
532mm
Mean slope
1,4°
Water table
362cm
Forest
10%
Crops
15%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)