Ontologia

HydroBASINS lev08 watershed · #2080358510

Bassin de River Nar

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 2 administrative regions : NA

2% lakePfafstetter: 23303603

Sub-basin area

591km²

Upstream area

7 325,9km²

Discharge

59,3m³/s

Mean elev.

19m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Middleton Stop Drain231 km²

▲ Receives from 2 basins

2 dept-equivalent regions (GADM L2)

16 intersecting protected areas

  • Ouse Washes

    IUCN IV

    Site of Special Scientific Interest

    24.72 km² overlap

  • Ouse Washes

    IUCN Not Reported

    Wetland of International Importance (Ramsar Site)

    24.72 km² overlap

  • Ouse Washes

    IUCN Not Reported

    Emerald Network

    24.47 km² overlap

  • Ouse Washes

    IUCN IV

    Nature Reserve

    16.30 km² overlap

  • Ouse Washes

    IUCN Not Reported

    Emerald Network

    3.26 km² overlap

  • River Nar

    IUCN IV

    Site of Special Scientific Interest

    2.07 km² overlap

  • Norfolk Valley Fens

    IUCN Not Reported

    Emerald Network

    0.63 km² overlap

  • East Walton and Adcock's Common

    IUCN IV

    Site of Special Scientific Interest

    0.62 km² overlap

  • Setchey

    IUCN IV

    Site of Special Scientific Interest

    0.33 km² overlap

7 more protected areas

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

Species present

7 982 distinct species · 579 012 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

579 012 obs · 16 cellules
Obs. / cellule
≥ 138 759
122 301–138 758
35 507–122 300
22 208–35 506
< 22 208

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

Ecological tissue

Sample of 39 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 River Nar : 32 espèces dont 4 patrimoniales (LR IUCN CR/EN/VU) reliées par 65 interactions GloBI sur 4 types (connectance 8.8%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
39
Interactions affichées
65
Connectance
0.088
Patrimoniales
4
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°

9,5°C

Annual rain

577mm

Moisture idx (CMI)

-0,13

Runoff

285mm/an

PET

664mm

AET

476mm

Mean slope

0,6°

Water table

51cm

Forest

0%

Crops

75%

Urban

2%

Protected

5%

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