HydroBASINS lev08 watershed · #2080411950
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 3 administrative regions : Janów Lubelski, Stalowa Wola, Tarnobrzeg
Sub-basin area
437,8km²
Upstream area
16 768,9km²
Discharge
110,92m³/s
Mean elev.
164m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Bukowa662 km²
- Bassin de San160 km²
3 dept-equivalent regions (GADM L2)
- Stalowa Wola356.0 km²81.0% of basin
- 71.5 km²16.3% of basin
- 11.9 km²2.7% of basin
12 intersecting protected areas
Lasy Janowskie
IUCN Not ReportedSpecial Protection Area (Birds Directive)
274.91 km² overlap
Uroczyska Lasów Janowskich
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
195.39 km² overlap
Landscape Park
141.47 km² overlap
Dolina Dolnego Sanu
IUCN Not ReportedSite of Community Importance (Habitats Directive)
40.33 km² overlap
Imielty Ług
IUCN IVNature Reserve
7.83 km² overlap
Łęka
IUCN IVNature Reserve
3.77 km² overlap
Dolina Jodłówki
IUCN Not AssignedNature Reserve
1.02 km² overlap
Jastkowice
IUCN IVNature Reserve
0.43 km² overlap
Sochy
IUCN Not AssignedNature Reserve
0.42 km² overlap
3 more protected areassorted by overlap area
Pniów
IUCN Not AssignedNature Reserve
0.05 km² overlap
Puszcza Sandomierska
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.01 km² overlap
Enklawy Puszczy Sandomierskiej
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 501 distinct species · 15 478 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 28 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 : 17 espèces reliées par 65 interactions GloBI sur 5 types (connectance 14.9%, filtre Serrano α=0.2). 13 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
557mm
Moisture idx (CMI)
-0,26
Runoff
137mm/an
PET
757mm
AET
475mm
Mean slope
0,6°
Water table
88cm
Forest
62%
Crops
19%
Urban
5%
Protected
32%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)