HydroBASINS lev08 watershed · #2080342840
Bassin de Wda
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 4 administrative regions : Chełmno, Starogard, Tuchola, Świecie
Sub-basin area
797,8km²
Upstream area
798,2km²
Discharge
4,67m³/s
Mean elev.
102m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- Świecie513.4 km²64.1% of basin
- Tuchola206.5 km²25.8% of basin
- 80.6 km²10.1% of basin
- Chełmno0.7 km²0.1% of basin
26 intersecting protected areas
Bory Tucholskie
IUCN Not ReportedSpecial Protection Area (Birds Directive)
643.10 km² overlap
Śliwicki
IUCN Not AssignedProtected Landscape Area
211.06 km² overlap
Wdecki Park Krajobrazowy
IUCN Not AssignedLandscape Park
201.78 km² overlap
Borów Tucholskich
IUCN Not AssignedProtected Landscape Area
80.61 km² overlap
Sandr Wdy
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
54.18 km² overlap
Wschodni Borów Tucholskich
IUCN Not AssignedProtected Landscape Area
29.31 km² overlap
Świecki
IUCN Not AssignedProtected Landscape Area
25.62 km² overlap
Landscape Park
21.19 km² overlap
Jezioro Piaseczno
IUCN IVNature Reserve
1.59 km² overlap
17 more protected areassorted by overlap area
Nature Reserve
1.14 km² overlap
Nature Reserve
1.02 km² overlap
Miedzno
IUCN IVNature Reserve
0.88 km² overlap
Chełmiński Park Krajobrazowy
IUCN Not AssignedLandscape Park
0.66 km² overlap
Wąwóz Wyrwa
IUCN Not AssignedNature Reserve
0.49 km² overlap
Solecka Dolina Wisły
IUCN Not ReportedSite of Community Importance (Habitats Directive)
0.48 km² overlap
Jezioro Ciche
IUCN IVNature Reserve
0.38 km² overlap
Torfowisko Jezierzba
IUCN Not AssignedNature Reserve
0.37 km² overlap
Dolina Dolnej Wisły
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.36 km² overlap
Nadwiślański Park Krajobrazowy
IUCN Not AssignedLandscape Park
0.28 km² overlap
Sarnówek
IUCN Not AssignedNature Reserve
0.13 km² overlap
Dury
IUCN IVNature Reserve
0.13 km² overlap
Krzywe Koło w pętli Wdy
IUCN IVNature Reserve
0.10 km² overlap
Torfowisko Okoniny
IUCN Not AssignedNature Reserve
0.07 km² overlap
Nature Reserve
0.04 km² overlap
Martwe
IUCN IVNature Reserve
0.04 km² overlap
Kościół w Śliwicach
IUCN Not ReportedSite of Community Importance (Habitats Directive)
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 683 distinct species · 8 050 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 38 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 Wda : 25 espèces reliées par 112 interactions GloBI sur 5 types (connectance 13.7%, filtre Serrano α=0.2). 16 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°
7,0°C
Annual rain
568mm
Moisture idx (CMI)
-0,16
Runoff
184mm/an
PET
673mm
AET
477mm
Mean slope
1,2°
Water table
170cm
Forest
59%
Crops
23%
Urban
2%
Protected
60%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)