HydroBASINS lev08 watershed · #2080337650

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 across 2 countries : Augustów, Hrodna, Sokółka

Pfafstetter: 24248088

Sub-basin area

985km²

Upstream area

985km²

Discharge

4,33m³/s

Mean elev.

144m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Biebrza10 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

3 dept-equivalent regions (GADM L2)

Sokółka
Podlaskie · Poland
570.9 km²
57.7% of basin
Augustów
Podlaskie · Poland
395.7 km²
40.0% of basin
Hrodna
Grodno · Belarus
22.7 km²
2.3% of basin

13 intersecting protected areas

Ostoja Biebrzańska
IUCN Not Reported
Special Protection Area (Birds Directive)
303.97 km² overlap
Dolina Biebrzy
IUCN Not Reported
Site of Community Importance (Habitats Directive)
236.83 km² overlap
Puszcza Augustowska
IUCN Not Reported
Special Protection Area (Birds Directive)
148.51 km² overlap
Ostoja Augustowska
IUCN Not Reported
Site of Community Importance (Habitats Directive)
130.15 km² overlap
Dolina Biebrzy
IUCN Not Assigned
Protected Landscape Area
126.27 km² overlap
Puszcza i Jeziora Augustowskie
IUCN Not Assigned
Protected Landscape Area
85.48 km² overlap
Biebrzański Park Narodowy
IUCN Not Assigned
National Park
81.81 km² overlap
Biebrzanski National Park
IUCN II
Wetland of International Importance (Ramsar Site)
81.81 km² overlap
Ostoja Knyszyńska
IUCN Not Reported
Site of Community Importance (Habitats Directive)
6.93 km² overlap

4 more protected areassorted by overlap area

Kuriańskie Bagno
IUCN IV
Nature Reserve
5.25 km² overlap
Kozi Rynek
IUCN IV
Nature Reserve
1.47 km² overlap
Źródliska Wzgórz Sokólskich
IUCN Not Reported
Site of Community Importance (Habitats Directive)
0.49 km² overlap
Glinki
IUCN IV
Nature Reserve
0.02 km² overlap

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

1 306 distinct species · 20 304 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 30 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 Bassin de Biebrza : 24 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 67 interactions GloBI sur 3 types (connectance 15.4%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

Connectance

0.154

Patrimoniales

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

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

Hydroclimate (BasinATLAS lev08)

Mean T°

6,5°C

Annual rain

581mm

Moisture idx (CMI)

-0,17

Runoff

164mm/an

PET

697mm

AET

490mm

Mean slope

1,0°

Water table

111cm

Forest

15%

Crops

35%

Urban

Protected

22%

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)