HydroBASINS lev08 watershed · #2080351710
Bassin de Drwęca
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 2 administrative regions : Toruń, Toruń (City)
Sub-basin area
112,2km²
Upstream area
4 616km²
Discharge
27,44m³/s
Mean elev.
71m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Drwęca1083 km²
- Bassin de Struga Toruńska447 km²
2 dept-equivalent regions (GADM L2)
- 106.9 km²94.9% of basin
- 5.7 km²5.1% of basin
5 intersecting protected areas
Doliny Drwęcy
IUCN Not AssignedProtected Landscape Area
28.22 km² overlap
Dolina Drwęcy
IUCN Not ReportedSite of Community Importance (Habitats Directive)
2.71 km² overlap
Rzeka Drwęca
IUCN IVNature Reserve
0.83 km² overlap
Dolina Dolnej Wisły
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.24 km² overlap
Nieszawska Dolina Wisły
IUCN Not ReportedSite of Community Importance (Habitats Directive)
0.18 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
766 distinct species · 4 629 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 33 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 Drwęca : 23 espèces reliées par 103 interactions GloBI sur 6 types (connectance 18.4%, 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°
7,9°C
Annual rain
534mm
Moisture idx (CMI)
-0,27
Runoff
144mm/an
PET
734mm
AET
455mm
Mean slope
0,9°
Water table
170cm
Forest
32%
Crops
49%
Urban
17%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)