HydroBASINS lev08 watershed · #2080390220
Bassin de Zwolanka
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 : Kozienice, Puławy, Radom, Zwoleń
Sub-basin area
180,1km²
Upstream area
180,1km²
Discharge
0,78m³/s
Mean elev.
149m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- Zwoleń89.6 km²49.6% of basin
- Kozienice86.3 km²47.8% of basin
- 3.0 km²1.7% of basin
- 1.8 km²1.0% of basin
6 intersecting protected areas
Ostoja Kozienicka
IUCN Not ReportedSpecial Protection Area (Birds Directive)
66.14 km² overlap
Puszcza Kozienicka
IUCN Not ReportedSite of Community Importance (Habitats Directive)
19.34 km² overlap
Landscape Park
16.47 km² overlap
Okólny Ług
IUCN IVNature Reserve
1.69 km² overlap
Krępiec
IUCN IVNature Reserve
0.78 km² overlap
Dolina Środkowej Wisły
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.05 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
653 distinct species · 3 333 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 32 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 Zwolanka : 28 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 45 interactions GloBI sur 4 types (connectance 8.0%, filtre Serrano α=0.2). 6 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°
7,7°C
Annual rain
534mm
Moisture idx (CMI)
-0,28
Runoff
136mm/an
PET
743mm
AET
457mm
Mean slope
0,7°
Water table
172cm
Forest
7%
Crops
64%
Urban
0%
Protected
10%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)