HydroBASINS lev08 watershed · #2080375450
Bassin de Świder
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 7 administrative regions : Garwolin, Mińsk, Otwock, Piaseczno, Siedlce +2
Sub-basin area
1 196,6km²
Upstream area
1 196,6km²
Discharge
5,17m³/s
Mean elev.
149m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
7 dept-equivalent regions (GADM L2)
- 512.7 km²42.7% of basin
- Otwock252.1 km²21.0% of basin
- 193.9 km²16.1% of basin
- Garwolin177.4 km²14.8% of basin
- 60.7 km²5.0% of basin
- Warszawa4.5 km²0.4% of basin
- Piaseczno0.0 km²0.0% of basin
24 intersecting protected areas
Miński
IUCN Not AssignedProtected Landscape Area
153.62 km² overlap
Nadwiślański (powiat garwoliński, miński i otwocki)
IUCN Not AssignedProtected Landscape Area
119.47 km² overlap
Łukowski Obszar Chronionego Krajobrazu
IUCN Not AssignedProtected Landscape Area
89.15 km² overlap
Warszawski
IUCN Not AssignedProtected Landscape Area
84.33 km² overlap
Landscape Park
30.77 km² overlap
Dolina Środkowego Świdra
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
14.77 km² overlap
Lasy Łukowskie
IUCN Not ReportedSpecial Protection Area (Birds Directive)
12.09 km² overlap
Bagna Celestynowskie
IUCN Not ReportedSite of Community Importance (Habitats Directive)
6.84 km² overlap
Świder
IUCN IVNature Reserve
3.54 km² overlap
15 more protected areassorted by overlap area
Dąbrowy Seroczyńskie
IUCN IVNature Reserve
2.71 km² overlap
Dąbrowy Seroczyńskie
IUCN Not ReportedSite of Community Importance (Habitats Directive)
2.71 km² overlap
Dolina Środkowej Wisły
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.95 km² overlap
Jedlina
IUCN IVNature Reserve
0.72 km² overlap
Bagno Bocianowskie
IUCN IVNature Reserve
0.69 km² overlap
Gołe Łąki
IUCN Not ReportedSite of Community Importance (Habitats Directive)
0.50 km² overlap
Bagno Pogorzel
IUCN IVNature Reserve
0.48 km² overlap
Kulak
IUCN IVNature Reserve
0.48 km² overlap
Wyspy Świderskie
IUCN IVNature Reserve
0.36 km² overlap
Szerokie Bagno
IUCN IVNature Reserve
0.21 km² overlap
Dolina Kostrzynia
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.13 km² overlap
Czarci Dół
IUCN IVNature Reserve
0.09 km² overlap
Wólczańska Góra
IUCN IVNature Reserve
0.05 km² overlap
Żurawinowe Bagno
IUCN IVNature Reserve
0.02 km² overlap
Rogalec
IUCN IVNature Reserve
0.02 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 281 distinct species · 17 917 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 Świder : 20 espèces reliées par 90 interactions GloBI sur 5 types (connectance 19.4%, filtre Serrano α=0.2). 11 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°
7,3°C
Annual rain
524mm
Moisture idx (CMI)
-0,28
Runoff
136mm/an
PET
730mm
AET
448mm
Mean slope
0,8°
Water table
147cm
Forest
14%
Crops
53%
Urban
6%
Protected
23%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)