HydroBASINS lev08 watershed · #2080340120
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 1 administrative regions : Mońki
Sub-basin area
109,3km²
Upstream area
4 504,5km²
Discharge
23,07m³/s
Mean elev.
125m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Jegrznia1180 km²
- Bassin de Biebrza138 km²
5 intersecting protected areas
Dolina Biebrzy
IUCN Not ReportedSite of Community Importance (Habitats Directive)
62.62 km² overlap
Ostoja Biebrzańska
IUCN Not ReportedSpecial Protection Area (Birds Directive)
62.62 km² overlap
Biebrzański Park Narodowy
IUCN Not AssignedNational Park
34.94 km² overlap
Biebrzanski National Park
IUCN IIWetland of International Importance (Ramsar Site)
34.94 km² overlap
Dolina Biebrzy
IUCN Not AssignedProtected Landscape Area
2.51 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 154 distinct species · 25 530 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 28 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 52 interactions GloBI sur 4 types (connectance 13.8%, filtre Serrano α=0.2). 8 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
579mm
Moisture idx (CMI)
-0,17
Runoff
149mm/an
PET
700mm
AET
489mm
Mean slope
0,7°
Water table
90cm
Forest
15%
Crops
29%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)