HydroBASINS lev08 watershed · #2080366020
Bassin de Wkra
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 : Nowy Dwór Mazowiecki, Pułtusk, Płońsk
Sub-basin area
397,8km²
Upstream area
5 918,5km²
Discharge
33,12m³/s
Mean elev.
107m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Sona700 km²
- Bassin de Płonka537 km²
3 dept-equivalent regions (GADM L2)
- Nowy Dwór Mazowiecki228.0 km²57.1% of basin
- Płońsk148.2 km²37.1% of basin
- Pułtusk23.2 km²5.8% of basin
10 intersecting protected areas
Warszawski
IUCN Not AssignedProtected Landscape Area
55.05 km² overlap
Krysko-Joniecki
IUCN Not AssignedProtected Landscape Area
49.56 km² overlap
Nasielsko-Karniewski
IUCN Not AssignedProtected Landscape Area
19.58 km² overlap
Nadwkrzański
IUCN Not AssignedProtected Landscape Area
13.91 km² overlap
Naruszewski Obszar Chronionego Krajobrazu
IUCN Not AssignedProtected Landscape Area
13.16 km² overlap
Świetliste dąbrowy i grądy w Jabłonnej
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.93 km² overlap
Forty Modlińskie
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.42 km² overlap
Dolina Wkry
IUCN Not ReportedSite of Community Importance (Habitats Directive)
0.25 km² overlap
Dolina Wkry
IUCN IVNature Reserve
0.25 km² overlap
1 more protected areassorted by overlap area
Pomiechówek
IUCN IVNature Reserve
0.19 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
765 distinct species · 1 917 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 39 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 Wkra : 31 espèces reliées par 98 interactions GloBI sur 5 types (connectance 12.6%, filtre Serrano α=0.2). 9 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°
7,5°C
Annual rain
517mm
Moisture idx (CMI)
-0,29
Runoff
155mm/an
PET
727mm
AET
442mm
Mean slope
0,7°
Water table
82cm
Forest
7%
Crops
65%
Urban
4%
Protected
14%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)