HydroBASINS lev08 watershed · #2080366130
Bassin de Rządza
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 6 administrative regions : Legionowo, Mińsk, Nowy Dwór Mazowiecki, Otwock, Warszawa +1
Sub-basin area
1 373,9km²
Upstream area
68 693,8km²
Discharge
313,52m³/s
Mean elev.
107m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Narew997 km²
- Bassin de Bug524 km²
6 dept-equivalent regions (GADM L2)
- Wołomin641.6 km²46.5% of basin
- 350.3 km²25.4% of basin
- Legionowo270.1 km²19.6% of basin
- Warszawa79.3 km²5.7% of basin
- Nowy Dwór Mazowiecki37.7 km²2.7% of basin
- Otwock0.3 km²0.0% of basin
25 intersecting protected areas
Warszawski
IUCN Not AssignedProtected Landscape Area
449.57 km² overlap
Świetliste dąbrowy i grądy w Jabłonnej
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
11.69 km² overlap
Poligon Rembertów
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.42 km² overlap
Mosty Kalińskie
IUCN Not AssignedNature Reserve
1.99 km² overlap
Landscape Park
1.97 km² overlap
Puszcza Słupecka
IUCN IVNature Reserve
1.70 km² overlap
Jadwisin
IUCN IVNature Reserve
0.93 km² overlap
Torfowiska Czernik
IUCN Not ReportedSite of Community Importance (Habitats Directive)
0.54 km² overlap
Dębina
IUCN IVNature Reserve
0.53 km² overlap
16 more protected areassorted by overlap area
Zegrze
IUCN IVNature Reserve
0.53 km² overlap
Kawęczyn
IUCN IVNature Reserve
0.52 km² overlap
Krogulec
IUCN Not ReportedSite of Community Importance (Habitats Directive)
0.45 km² overlap
Horowe Bagno
IUCN IVNature Reserve
0.44 km² overlap
Łęgi Czarnej Strugi
IUCN IVNature Reserve
0.38 km² overlap
Łęgi Czarnej Strugi
IUCN Not ReportedSite of Community Importance (Habitats Directive)
0.38 km² overlap
Białe Błota
IUCN Not ReportedSite of Community Importance (Habitats Directive)
0.31 km² overlap
Grabicz
IUCN IVNature Reserve
0.30 km² overlap
Forty Modlińskie
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.29 km² overlap
Bagno Jacka
IUCN Not AssignedNature Reserve
0.20 km² overlap
Wieliszewskie Łęgi
IUCN IVNature Reserve
0.18 km² overlap
Wąwóz Szaniawskiego
IUCN IVNature Reserve
0.14 km² overlap
Olszynka Grochowska
IUCN IVNature Reserve
0.12 km² overlap
Ostoja Nowodworska
IUCN Not ReportedSite of Community Importance (Habitats Directive)
0.11 km² overlap
Torfowisko Zawały
IUCN Not AssignedNature Reserve
0.07 km² overlap
Strzebla Błotna w Zielonce
IUCN Not ReportedSite of Community Importance (Habitats Directive)
0.02 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 553 distinct species · 56 733 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 40 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 Rządza : 33 espèces reliées par 107 interactions GloBI sur 3 types (connectance 13.0%, filtre Serrano α=0.2). 8 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°
7,6°C
Annual rain
503mm
Moisture idx (CMI)
-0,31
Runoff
147mm/an
PET
731mm
AET
431mm
Mean slope
0,6°
Water table
87cm
Forest
26%
Crops
34%
Urban
17%
Protected
33%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)