HydroBASINS lev08 watershed · #7080753030
Bassin de Flat 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 3 administrative regions : Blanco, Hays, Travis
Sub-basin area
249,8km²
Upstream area
2 943,6km²
Discharge
13,82m³/s
Mean elev.
334m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Pedernales River296 km²
- Bassin de Miller Creek227 km²
3 dept-equivalent regions (GADM L2)
- 150.7 km²60.4% of basin
- 95.1 km²38.1% of basin
- 3.8 km²1.5% of basin
3 intersecting protected areas
Pedernales River
IUCN VEasement
30.66 km² overlap
Balcones Canyonlands
IUCN VPreserve
0.13 km² overlap
Hamilton Pool
IUCN VPreserve
0.02 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 519 distinct species · 122 872 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 Flat Creek : 30 espèces reliées par 91 interactions GloBI sur 4 types (connectance 9.2%, filtre Serrano α=0.2). 15 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°
19,0°C
Annual rain
818mm
Moisture idx (CMI)
-0,45
Runoff
173mm/an
PET
1 487mm
AET
692mm
Mean slope
3,3°
Water table
279cm
Forest
81%
Crops
10%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)