Ontologia

HydroBASINS lev08 watershed · #8080218360

Bassin de Delta 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 : Southeast Fairbanks, Valdez-Cordova

9% lakePfafstetter: 81247609

Sub-basin area

875,3km²

Upstream area

875,3km²

Discharge

22m³/s

Mean elev.

1 238m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Lower Miller Creek17 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

2 dept-equivalent regions (GADM L2)

3 intersecting protected areas

  • Delta River

    IUCN V

    Designated - Wild

    43.12 km² overlap

  • Delta River

    IUCN V

    Designated - Scenic

    35.61 km² overlap

  • Delta River

    IUCN V

    Designated - Recreational

    3.70 km² overlap

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

Species present

328 distinct species · 5 951 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

5 951 obs · 18 cellules
Obs. / cellule
≥ 4 155
1 554–4 154
21–1 553
6–20
< 6

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

Ecological tissue

Sample of 37 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 Delta River : 22 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 114 interactions GloBI sur 4 types (connectance 17.1%, filtre Serrano α=0.2). 15 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
37
Interactions affichées
114
Connectance
0.171
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°

-6,6°C

Annual rain

253mm

Moisture idx (CMI)

-0,46

Runoff

711mm/an

PET

473mm

AET

242mm

Mean slope

12,8°

Water table

287cm

Forest

0%

Crops

0%

Urban

0%

Protected

13%

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