Ontologia

HydroBASINS lev08 watershed · #7080388070

Bassin de Columbia 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 3 administrative regions : Benton, Morrow, Umatilla

Pfafstetter: 78250509

Sub-basin area

875,1km²

Upstream area

543 611,9km²

Discharge

5 402,11m³/s

Mean elev.

250m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Columbia River65 km²

▲ Receives from 2 basins

3 dept-equivalent regions (GADM L2)

2 intersecting protected areas

  • Umatilla

    IUCN IV

    National Wildlife Refuge

    10.00 km² overlap

  • Irrigon

    IUCN V

    Wildlife Area

    3.35 km² overlap

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

Species present

1 008 distinct species · 48 165 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

48 165 obs · 25 cellules
Obs. / cellule
≥ 20 250
5 120–20 249
794–5 119
203–793
< 203

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 Columbia River : 29 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 96 interactions GloBI sur 4 types (connectance 14.4%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
37
Interactions affichées
96
Connectance
0.144
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°

11,3°C

Annual rain

236mm

Moisture idx (CMI)

-0,78

Runoff

23mm/an

PET

1 093mm

AET

206mm

Mean slope

1,8°

Water table

974cm

Forest

21%

Crops

76%

Urban

0%

Protected

6%

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