Ontologia

HydroBASINS lev08 watershed · #8080301880

Bassin de Izavieknik River

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 : Bethel, Dillingham

37% lakePfafstetter: 81170049

Sub-basin area

1 610,1km²

Upstream area

1 610,2km²

Discharge

31,01m³/s

Mean elev.

456m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Togiak River241 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

2 dept-equivalent regions (GADM L2)

3 intersecting protected areas

  • Togiak

    IUCN IV

    National Wildlife Refuge

    1574.97 km² overlap

  • Togiak

    IUCN Ib

    Wilderness Area

    1574.96 km² overlap

  • Wood-tikchik

    IUCN V

    State Park

    0.10 km² overlap

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

Species present

166 distinct species · 3 215 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

3 215 obs · 11 cellules
Obs. / cellule
≥ 3 105
38–3 104
16–37
5–15
< 5

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

Ecological tissue

Sample of 36 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 Izavieknik River : 22 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 109 interactions GloBI sur 4 types (connectance 15.5%, filtre Serrano α=0.2). 16 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
38
Interactions affichées
109
Connectance
0.155
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°

-2,1°C

Annual rain

600mm

Moisture idx (CMI)

0,30

Runoff

634mm/an

PET

420mm

AET

354mm

Mean slope

16,4°

Water table

417cm

Forest

2%

Crops

0%

Urban

0%

Protected

97%

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