HydroBASINS lev08 watershed · #2080338750
Bassin de Wisła
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 : Chełmno, Grudziądz, Grudziądz (City), Toruń, Wąbrzeźno +1
Sub-basin area
883,2km²
Upstream area
186 372,5km²
Discharge
1 068,14m³/s
Mean elev.
63m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Wda798 km²
- Bassin de Fryba6 km²
6 dept-equivalent regions (GADM L2)
- Świecie360.4 km²40.6% of basin
- Chełmno261.1 km²29.4% of basin
- 168.0 km²18.9% of basin
- 46.6 km²5.3% of basin
- Wąbrzeźno42.1 km²4.8% of basin
- 8.6 km²1.0% of basin
19 intersecting protected areas
Nadwiślański Park Krajobrazowy
IUCN Not AssignedLandscape Park
163.91 km² overlap
Wschodni Borów Tucholskich
IUCN Not AssignedProtected Landscape Area
147.65 km² overlap
Chełmiński Park Krajobrazowy
IUCN Not AssignedLandscape Park
113.61 km² overlap
Strefy Krawędziowej Doliny Wisły
IUCN Not AssignedProtected Landscape Area
78.34 km² overlap
Bory Tucholskie
IUCN Not ReportedSpecial Protection Area (Birds Directive)
55.63 km² overlap
Dolina Dolnej Wisły
IUCN Not ReportedSpecial Protection Area (Birds Directive)
39.02 km² overlap
Jezioro Stelchno
IUCN Not AssignedProtected Landscape Area
6.31 km² overlap
Solecka Dolina Wisły
IUCN Not ReportedSite of Community Importance (Habitats Directive)
5.29 km² overlap
Cytadela Grudziądz
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.23 km² overlap
10 more protected areassorted by overlap area
Góry Łosiowe
IUCN Not AssignedLandscape Park
1.41 km² overlap
Zbocza Świętopełka
IUCN Not AssignedNature Reserve
0.32 km² overlap
Grabowiec
IUCN IVNature Reserve
0.28 km² overlap
Jezioro Fletnowskie
IUCN IVNature Reserve
0.25 km² overlap
Zamek Świecie
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.18 km² overlap
Czarcie Góry
IUCN Not AssignedNature Reserve
0.13 km² overlap
Doliny Osy i Gardęgi
IUCN Not AssignedProtected Landscape Area
0.05 km² overlap
Świecki
IUCN Not AssignedProtected Landscape Area
0.04 km² overlap
Śnieżynka
IUCN IVNature Reserve
0.03 km² overlap
Jaskinie Grudziądzkie
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
1 344 distinct species · 12 391 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 Wisła : 22 espèces reliées par 105 interactions GloBI sur 4 types (connectance 17.6%, 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°
7,5°C
Annual rain
547mm
Moisture idx (CMI)
-0,21
Runoff
162mm/an
PET
697mm
AET
464mm
Mean slope
1,1°
Water table
124cm
Forest
24%
Crops
54%
Urban
7%
Protected
21%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)