HydroBASINS lev08 watershed · #2080415070
Bassin de San
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 2 administrative regions : Nisko, Stalowa Wola
Sub-basin area
159,6km²
Upstream area
15 668,5km²
Discharge
103,77m³/s
Mean elev.
167m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Rudna277 km²
- Bassin de Stróżanka36 km²
2 dept-equivalent regions (GADM L2)
- Stalowa Wola84.6 km²52.9% of basin
- Nisko75.5 km²47.1% of basin
2 intersecting protected areas
Dolina Dolnego Sanu
IUCN Not ReportedSite of Community Importance (Habitats Directive)
10.48 km² overlap
Puszcza Sandomierska
IUCN Not ReportedSpecial Protection Area (Birds Directive)
6.22 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
572 distinct species · 1 660 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 : 33 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 107 interactions GloBI sur 7 types (connectance 10.8%, 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°
7,9°C
Annual rain
565mm
Moisture idx (CMI)
-0,25
Runoff
144mm/an
PET
757mm
AET
481mm
Mean slope
0,8°
Water table
120cm
Forest
46%
Crops
32%
Urban
27%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)