Ontologia

HydroBASINS lev08 watershed · #2080359340

Bassin de Raciążnica

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 5 administrative regions : Ciechanów, Płock, Płońsk, Sierpc, Żuromin

Pfafstetter: 24246004

Sub-basin area

706,5km²

Upstream area

706,5km²

Discharge

3,67m³/s

Mean elev.

112m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Płonka537 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

5 dept-equivalent regions (GADM L2)

4 intersecting protected areas

  • Nadwkrzański

    IUCN Not Assigned

    Protected Landscape Area

    182.72 km² overlap

  • Równina Raciążska

    IUCN Not Assigned

    Protected Landscape Area

    78.85 km² overlap

  • Raciąż

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    14.31 km² overlap

  • Doliny Wkry i Mławki

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    0.00 km² overlap

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

Species present

323 distinct species · 785 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

785 obs · 20 cellules
Obs. / cellule
≥ 182
91–181
40–90
26–39
< 26

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

Ecological tissue

Sample of 44 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 Raciążnica : 34 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 120 interactions GloBI sur 5 types (connectance 11.6%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
46
Interactions affichées
120
Connectance
0.116
Patrimoniales
2
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

552mm

Moisture idx (CMI)

-0,23

Runoff

165mm/an

PET

721mm

AET

468mm

Mean slope

0,4°

Water table

37cm

Forest

4%

Crops

66%

Urban

1%

Protected

0%

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