Ruisseau· 17 segments

Wel

Crosses 4 administrative regions : Działdowo, Iława, Nowe Miasto, Ostróda

ruisseau

Total length

102km

Max discharge

2,3m³/s

Max Strahler

Segments matched

River geography4 admin regions · 0 communes

Parent watershed

hybas-20803527201778 km²

4 administrative regions crossed (GADM L2)

Działdowo
Warmińsko-Mazurskie · Poland
40.7 km
in this dpt
Nowe Miasto
Warmińsko-Mazurskie · Poland
26.1 km
in this dpt
Ostróda
Warmińsko-Mazurskie · Poland
15.7 km
in this dpt
Iława
Warmińsko-Mazurskie · Poland
12.6 km
in this dpt

21 intersecting protected areas

Górznieńsko-Lidzbarski Park Krajobrazowy
IUCN V
Landscape Park
Welski Park Krajobrazowy
IUCN V
Landscape Park
Dolina Dolnej Drwęcy
IUCN Not Assigned
Protected Landscape Area
Wzgórz Dylewskich
IUCN Not Assigned
Protected Landscape Area
Dolina Drwęcy
IUCN Not Reported
Site of Community Importance (Habitats Directive)
Ostoja Lidzbarska
IUCN Not Reported
Site of Community Importance (Habitats Directive)
Dąbrówieński
IUCN Not Assigned
Protected Landscape Area
Doliny Rzeki Wel
IUCN Not Assigned
Protected Landscape Area
Doliny Górnej Wkry
IUCN Not Assigned
Protected Landscape Area

12 more protected areassorted by area

Ostoja Welska
IUCN Not Reported
Site of Community Importance (Habitats Directive)
Otuliny Welskiego Parku Krajobrazowego - Słup
IUCN Not Assigned
Protected Landscape Area
Grzybiny
IUCN Not Assigned
Protected Landscape Area
Otuliny Welskiego Parku Krajobrazowego - Dębień
IUCN Not Assigned
Protected Landscape Area
Rzeka Drwęca
IUCN IV
Nature Reserve
Przełomowa Dolina Rzeki Wel
IUCN Not Reported
Site of Community Importance (Habitats Directive)
Buchnowski
IUCN Not Assigned
Protected Landscape Area
Ostrów Tarczyński
IUCN IV
Nature Reserve
Bagno Koziana
IUCN IV
Nature Reserve
Klonowo
IUCN IV
Nature Reserve
Piekiełko
IUCN IV
Nature Reserve
Jezioro Neliwa
IUCN IV
Nature Reserve

1 page = 1 named river (aggregation of 17 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

206 distinct species · 711 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 27 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 Wel : 16 espèces reliées par 64 interactions GloBI sur 5 types (connectance 15.8%, filtre Serrano α=0.2). 13 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

Connectance

0.158

Patrimoniales

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

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

Hydrology (HydroRIVERS v10)