HydroBASINS lev08 watershed · #2080330300

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 5 administrative regions : Chojnice, Starogard, Tczew, Tuchola, Świecie

17% lakePfafstetter: 24241025

Sub-basin area

632,9km²

Upstream area

1 591,4km²

Discharge

14,25m³/s

Mean elev.

108m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Wierzyca72 km²

▲ Receives from 2 basins

Bassin de Parzenica308 km²
Bassin de Wda289 km²

5 dept-equivalent regions (GADM L2)

Starogard
Pomorskie · Poland
551.7 km²
86.8% of basin
Chojnice
Pomorskie · Poland
50.6 km²
8.0% of basin
Tczew
Pomorskie · Poland
15.0 km²
2.4% of basin
Świecie
Kujawsko-Pomorskie · Poland
13.3 km²
2.1% of basin
Tuchola
Kujawsko-Pomorskie · Poland
5.0 km²
0.8% of basin

13 intersecting protected areas

Bory Tucholskie
IUCN Not Reported
Special Protection Area (Birds Directive)
477.86 km² overlap
Borów Tucholskich
IUCN Not Assigned
Protected Landscape Area
356.06 km² overlap
Sandr Wdy
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
25.20 km² overlap
Wschodni Borów Tucholskich
IUCN Not Assigned
Protected Landscape Area
10.69 km² overlap
Wdecki Park Krajobrazowy
IUCN Not Assigned
Landscape Park
2.60 km² overlap
Śliwicki
IUCN Not Assigned
Protected Landscape Area
2.49 km² overlap
Zdrójno
IUCN IV
Nature Reserve
1.71 km² overlap
Siwe Bagno
IUCN Not Assigned
Nature Reserve
0.91 km² overlap
Północny - Część Wschodnia
IUCN Not Assigned
Protected Landscape Area
0.46 km² overlap

4 more protected areassorted by overlap area

Tucholski Park Krajobrazowy
IUCN V
Landscape Park
0.39 km² overlap
Sowie Torfowiska
IUCN Not Assigned
Nature Reserve
0.33 km² overlap
Jezioro Łyse
IUCN IV
Nature Reserve
0.21 km² overlap
Czapli Wierch
IUCN IV
Nature Reserve
0.05 km² overlap

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

1 307 distinct species · 5 936 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 43 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).

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bassin de Wda : 34 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 95 interactions GloBI sur 6 types (connectance 10.0%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

Connectance

0.100

Patrimoniales

Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydroclimate (BasinATLAS lev08)

Mean T°

6,7°C

Annual rain

573mm

Moisture idx (CMI)

-0,12

Runoff

218mm/an

PET

648mm

AET

476mm

Mean slope

1,2°

Water table

120cm

Forest

56%

Crops

28%

Urban

Protected

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)