Ontologia

HydroBASINS lev08 watershed · #8080002790

Bassin de Swikshak 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, Kodiak Island

Coastal basin 18% lakePfafstetter: 81153193

Sub-basin area

747,8km²

Upstream area

747,8km²

Discharge

13,43m³/s

Mean elev.

466m

Administrative coverage

2 dept-equivalent regions (GADM L2)

2 intersecting protected areas

  • Katmai Bay

    IUCN II

    National Park

    719.51 km² overlap

  • Katmai

    IUCN Ib

    Wilderness Area

    719.45 km² overlap

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

Species present

266 distinct species · 801 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

801 obs · 14 cellules
Obs. / cellule
≥ 465
122–464
42–121
20–41
< 20

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

Ecological tissue

Sample of 41 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 Swikshak River : 28 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 95 interactions GloBI sur 4 types (connectance 10.0%, filtre Serrano α=0.2). 16 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
44
Interactions affichées
95
Connectance
0.100
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°

1,2°C

Annual rain

1 067mm

Moisture idx (CMI)

0,57

Runoff

1 530mm/an

PET

458mm

AET

432mm

Mean slope

15,1°

Water table

490cm

Forest

3%

Crops

0%

Urban

0%

Protected

98%

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