Rivière· 19 segments
Ełk
Crosses 4 administrative regions : Ełk, Grajewo, Mońki, Olecko
Total length
84km
Max discharge
16,2m³/s
Max Strahler
4
Segments matched
19
River geography4 admin regions · 0 communes
4 administrative regions crossed (GADM L2)
- EłkWarmińsko-Mazurskie · Poland70.4 kmin this dpt
- GrajewoPodlaskie · Poland14.5 kmin this dpt
- MońkiPodlaskie · Poland0.8 kmin this dpt
- OleckoWarmińsko-Mazurskie · Poland0.0 kmin this dpt
10 intersecting protected areas
Ostoja Biebrzańska
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Dolina Biebrzy
IUCN Not ReportedSite of Community Importance (Habitats Directive)
Biebrzanski National Park
IUCN IIWetland of International Importance (Ramsar Site)
Biebrzański Park Narodowy
IUCN Not AssignedNational Park
Obszar Chronionego Krajobrazu Pojezierza Ełckiego
IUCN Not AssignedProtected Landscape Area
Obszar Chronionego Krajobrazu Pojezierza Iławskiego - część A i B
IUCN Not AssignedProtected Landscape Area
Dolina Biebrzy
IUCN Not AssignedProtected Landscape Area
Jezioro Woszczelskie
IUCN Not ReportedSite of Community Importance (Habitats Directive)
Bartosze
IUCN IVNature Reserve
1 more protected areassorted by area
Murawy na Pojezierzu Ełckim
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1 page = 1 named river (aggregation of 19 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
111 distinct species · 408 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 29 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 Ełk : 23 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 54 interactions GloBI sur 5 types (connectance 12.4%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology (HydroRIVERS v10)
Total length
84km
Max discharge
16,2m³/s
Max Strahler
4
Segments matched
19
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.