HydroBASINS lev08 watershed · #2080504800
Bassin de Trisanna
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 across 2 countries : Bludenz, Inn, Landeck, Reutte
Sub-basin area
729,6km²
Upstream area
729,6km²
Discharge
22,66m³/s
Mean elev.
2 126m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- 700.2 km²95.7% of basin
- 23.4 km²3.2% of basin
- Bludenz6.1 km²0.8% of basin
- 1.9 km²0.3% of basin
7 intersecting protected areas
Landscape Protection Area
2.08 km² overlap
Verwall
IUCN Not ReportedSpecial Protection Area (Birds Directive)
1.84 km² overlap
Vadret da Fenga "Süd"
IUCN IVFederal Inventory of Alluvial Zones of National Importance
1.70 km² overlap
Val Fenga West
IUCN IVFederal Inventory of Fenlands of National Importance
0.46 km² overlap
Val Fenga Ost
IUCN IVFederal Inventory of Fenlands of National Importance
0.19 km² overlap
Aua Naira
IUCN IVFederal Inventory of Fenlands of National Importance
0.04 km² overlap
Protected Landscape Section
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 888 distinct species · 59 250 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 23 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 Trisanna : 22 espèces + 1 bulle famille, 36 interactions GloBI documentées sur 4 types (connectance 14.2%, filtre Serrano α=0.2). Les 1 bulle regroupe des espèces visuellement absorbées par famille (≥3 espèces visibles).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
0,6°C
Annual rain
1 265mm
Moisture idx (CMI)
0,60
Runoff
900mm/an
PET
463mm
AET
457mm
Mean slope
25,9°
Water table
847cm
Forest
47%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)