Ontologia

HydroBASINS lev08 watershed · #8080307080

Bassin de Nonvianuk 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 : Kenai Peninsula, Lake and Peninsula

155% lakePfafstetter: 81158024

Sub-basin area

1 065,7km²

Upstream area

1 065,7km²

Discharge

24,24m³/s

Mean elev.

497m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Alagnak River1052 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

2 dept-equivalent regions (GADM L2)

3 intersecting protected areas

  • Katmai Bay

    IUCN II

    National Park

    703.51 km² overlap

  • Katmai

    IUCN Ib

    Wilderness Area

    364.05 km² overlap

  • Katmai

    IUCN V

    National Preserve

    231.26 km² overlap

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

Species present

290 distinct species · 1 900 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 900 obs · 21 cellules
Obs. / cellule
≥ 1 260
109–1 259
34–108
26–33
< 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 43 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 Nonvianuk River : 28 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 127 interactions GloBI sur 4 types (connectance 13.4%, filtre Serrano α=0.2). 16 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
44
Interactions affichées
127
Connectance
0.134
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°

-0,1°C

Annual rain

783mm

Moisture idx (CMI)

0,42

Runoff

741mm/an

PET

446mm

AET

397mm

Mean slope

10,6°

Water table

411cm

Forest

3%

Crops

0%

Urban

0%

Protected

100%

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