HydroBASINS lev08 watershed · #2080364630

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 : Ciechanów, Legionowo, Maków, Nowy Dwór Mazowiecki, Przasnysz +2

Pfafstetter: 24248010

Sub-basin area

996,6km²

Upstream area

28 644,5km²

Discharge

152,65m³/s

Mean elev.

104m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Rządza1374 km²

▲ Receives from 2 basins

Bassin de Orzyc2081 km²
Bassin de Narew1808 km²

7 dept-equivalent regions (GADM L2)

Pułtusk
Mazowieckie · Poland
672.6 km²
67.2% of basin
Maków
Mazowieckie · Poland
124.2 km²
12.4% of basin
Wyszków
Mazowieckie · Poland
86.8 km²
8.7% of basin
Legionowo
Mazowieckie · Poland
47.5 km²
4.7% of basin
Nowy Dwór Mazowiecki
Mazowieckie · Poland
32.2 km²
3.2% of basin
Ciechanów
Mazowieckie · Poland
22.5 km²
2.2% of basin
Przasnysz
Mazowieckie · Poland
14.8 km²
1.5% of basin

12 intersecting protected areas

Puszcza Biała
IUCN Not Reported
Special Protection Area (Birds Directive)
195.88 km² overlap
Nasielsko-Karniewski
IUCN Not Assigned
Protected Landscape Area
123.91 km² overlap
Warszawski
IUCN Not Assigned
Protected Landscape Area
33.13 km² overlap
Nadbużański Park Krajobrazowy im. Wojciecha Bogumiła Jastrzębowskiego
IUCN V
Landscape Park
32.17 km² overlap
Dolina Dolnej Narwi
IUCN Not Reported
Special Protection Area (Birds Directive)
22.83 km² overlap
Świetliste dąbrowy i grądy w Jabłonnej
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
3.55 km² overlap
Stawinoga
IUCN IV
Nature Reserve
1.47 km² overlap
Bartnia
IUCN IV
Nature Reserve
0.15 km² overlap
Zegrze
IUCN IV
Nature Reserve
0.13 km² overlap

3 more protected areassorted by overlap area

Wielgolas
IUCN IV
Nature Reserve
0.07 km² overlap
Popławy
IUCN IV
Nature Reserve
0.07 km² overlap
Dzierżenińska Kępa
IUCN IV
Nature Reserve
0.01 km² overlap

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

Species present

1 000 distinct species · 7 319 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 33 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 Narew : 25 espèces reliées par 83 interactions GloBI sur 4 types (connectance 14.8%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

Connectance

0.148

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°

7,4°C

Annual rain

515mm

Moisture idx (CMI)

-0,29

Runoff

159mm/an

PET

725mm

AET

440mm

Mean slope

0,7°

Water table

90cm

Forest

12%

Crops

59%

Urban

Protected

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