HydroBASINS lev08 watershed · #2080338200
Bassin de Biebrza
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 3 administrative regions : Augustów, Mońki, Sokółka
Sub-basin area
10,4km²
Upstream area
2 344km²
Discharge
12,55m³/s
Mean elev.
108m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Rospuda1348 km²
- Bassin de Biebrza985 km²
3 dept-equivalent regions (GADM L2)
- 6.0 km²57.4% of basin
- 3.1 km²29.2% of basin
- 1.4 km²13.4% of basin
5 intersecting protected areas
Dolina Biebrzy
IUCN Not ReportedSite of Community Importance (Habitats Directive)
10.45 km² overlap
Ostoja Biebrzańska
IUCN Not ReportedSpecial Protection Area (Birds Directive)
10.45 km² overlap
Biebrzański Park Narodowy
IUCN Not AssignedNational Park
8.93 km² overlap
Biebrzanski National Park
IUCN IIWetland of International Importance (Ramsar Site)
8.93 km² overlap
Dolina Biebrzy
IUCN Not AssignedProtected Landscape Area
1.51 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
542 distinct species · 5 547 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 25 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 Biebrza : 20 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 46 interactions GloBI sur 3 types (connectance 14.2%, filtre Serrano α=0.2). 6 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°
6,7°C
Annual rain
574mm
Moisture idx (CMI)
-0,18
Runoff
152mm/an
PET
699mm
AET
485mm
Mean slope
0,1°
Water table
3cm
Forest
5%
Crops
0%
Urban
0%
Protected
15%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)