Ontologia

HydroBASINS lev08 watershed · #7080386330

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, Umatilla, Walla Walla

Pfafstetter: 78250700

Sub-basin area

622km²

Upstream area

536 220,9km²

Discharge

5 380,01m³/s

Mean elev.

318m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Columbia River875 km²

▲ Receives from 2 basins

3 dept-equivalent regions (GADM L2)

4 intersecting protected areas

  • Wanaket

    IUCN V

    Wildlife Area

    9.44 km² overlap

  • Mcnary

    IUCN IV

    National Wildlife Refuge

    6.14 km² overlap

  • McNary Wildlife

    IUCN V

    Nature Area

    1.39 km² overlap

  • Cold Springs

    IUCN IV

    National Wildlife Refuge

    0.14 km² overlap

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

Species present

966 distinct species · 220 345 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

220 345 obs · 20 cellules
Obs. / cellule
≥ 90 349
85 967–90 348
1 073–85 966
420–1 072
< 420

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

Ecological tissue

Sample of 30 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 : 22 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 72 interactions GloBI sur 3 types (connectance 15.5%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
31
Interactions affichées
72
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°

11,0°C

Annual rain

284mm

Moisture idx (CMI)

-0,74

Runoff

32mm/an

PET

1 080mm

AET

247mm

Mean slope

4,2°

Water table

1 057cm

Forest

16%

Crops

57%

Urban

0%

Protected

1%

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