Ontologia

HydroBASINS lev08 watershed · #2080357490

Bassin de Narew

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 7 administrative regions : Maków, Ostrołęka, Ostrołęka (City), Ostrów Mazowiecka, Pułtusk +2

Pfafstetter: 24248030

Sub-basin area

1 808,4km²

Upstream area

25 567,5km²

Discharge

135,47m³/s

Mean elev.

107m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Narew997 km²

▲ Receives from 2 basins

7 dept-equivalent regions (GADM L2)

3 intersecting protected areas

  • Puszcza Biała

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    295.51 km² overlap

  • Dolina Dolnej Narwi

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    120.07 km² overlap

  • Bagno Pulwy

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    41.15 km² overlap

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

Species present

1 245 distinct species · 7 492 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

7 492 obs · 55 cellules
Obs. / cellule
≥ 1 744
430–1 743
110–429
42–109
< 42

Source : GBIF — observations agrégées par hexagones 0.027° × 0.027° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Ecological tissue

Sample of 38 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

Indicateurs du tissu écologique

Tissu écologique de Bassin de Narew : 26 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 84 interactions GloBI sur 3 types (connectance 11.9%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
38
Interactions affichées
84
Connectance
0.119
Patrimoniales
1
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°

7,2°C

Annual rain

542mm

Moisture idx (CMI)

-0,25

Runoff

151mm/an

PET

722mm

AET

461mm

Mean slope

0,7°

Water table

96cm

Forest

20%

Crops

47%

Urban

1%

Protected

0%

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