Rivière· 13 segments
Olszanka
Crosses 12 administrative regions : Augustów, Białystok, Garwolin, Hajnówka, Lesko +7
Total length
92km
Max discharge
11,2m³/s
Max Strahler
4
Segments matched
13
River geography12 admin regions · 0 communes
12 administrative regions crossed (GADM L2)
- AugustówPodlaskie · Poland25.9 kmin this dpt
- SokółkaPodlaskie · Poland19.4 kmin this dpt
- HajnówkaPodlaskie · Poland7.1 kmin this dpt
- GarwolinMazowieckie · Poland5.8 kmin this dpt
- LublinLubelskie · Poland4.8 kmin this dpt
- BiałystokPodlaskie · Poland4.1 kmin this dpt
- SuwałkiPodlaskie · Poland3.6 kmin this dpt
- LeskoPodkarpackie · Poland1.7 kmin this dpt
- PrzemyślPodkarpackie · Poland1.6 kmin this dpt
- Tomaszów LubelskiLubelskie · Poland0.7 kmin this dpt
- SejnyPodlaskie · Poland0.1 kmin this dpt
- Suwałki (City)Podlaskie · Poland0.0 kmin this dpt
27 intersecting protected areas
Ostoja Biebrzańska
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Białowieża Forest
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
Puszcza Augustowska
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Dolina Biebrzy
IUCN Not ReportedSite of Community Importance (Habitats Directive)
Ostoja Augustowska
IUCN Not ReportedSite of Community Importance (Habitats Directive)
Roztocze
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Wschodniobeskidzki Obszar Chronionego Krajobrazu
IUCN Not AssignedProtected Landscape Area
Puszcza Białowieska
IUCN Not AssignedProtected Landscape Area
Puszcza i Jeziora Augustowskie
IUCN Not AssignedProtected Landscape Area
18 more protected areassorted by area
Pogórze Przemyskie
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Puszcza Białowieska
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Puszcza Białowieska
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Landscape Park
Biebrzanski National Park
IUCN IIWetland of International Importance (Ramsar Site)
Biebrzański Park Narodowy
IUCN Not AssignedNational Park
Landscape Park
Góry Słonne
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Ostoja Góry Słonne
IUCN Not ReportedSite of Community Importance (Habitats Directive)
Dolina Narwi
IUCN Not AssignedProtected Landscape Area
Ostoja Przemyska
IUCN Not ReportedSite of Community Importance (Habitats Directive)
Dolina Rospudy
IUCN Not AssignedProtected Landscape Area
Ostoja w Dolinie Górnej Narwi
IUCN Not ReportedSite of Community Importance (Habitats Directive)
Dolina Górnej Narwi
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Landscape Park
Rzeka San
IUCN Not ReportedSite of Community Importance (Habitats Directive)
Olszanka
IUCN Not ReportedSite of Community Importance (Habitats Directive)
Olszanka
IUCN IVNature Reserve
1 page = 1 named river (aggregation of 13 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
159 distinct species · 1 156 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 41 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 Olszanka : 30 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 107 interactions GloBI sur 7 types (connectance 13.0%, 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).
Hydrology (HydroRIVERS v10)
Total length
92km
Max discharge
11,2m³/s
Max Strahler
4
Segments matched
13
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.