HydroBASINS lev08 watershed · #7080385790

Bassin de Wenaha 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 4 administrative regions : Asotin, Columbia, Garfield, Wallowa

Pfafstetter: 78270840

Sub-basin area

772,9km²

Upstream area

773km²

Discharge

4,34m³/s

Mean elev.

1 323m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Grande Ronde River632 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

4 dept-equivalent regions (GADM L2)

Wallowa
Oregon · United States
365.2 km²
47.1% of basin
Columbia
Washington · United States
284.7 km²
36.7% of basin
Garfield
Washington · United States
116.8 km²
15.1% of basin
Asotin
Washington · United States
8.1 km²
1.0% of basin

8 intersecting protected areas

Wenaha-Tucannon
IUCN Ib
Wilderness
392.83 km² overlap
Wenaha-Tucannon
IUCN Ib
Wilderness
262.30 km² overlap
Wenaha, Oregon
IUCN V
Wild and Scenic River
26.87 km² overlap
Wenaha
IUCN V
Wildlife Area
11.30 km² overlap
Wenaha Breaks
IUCN Ia
Research Natural Area
7.97 km² overlap
Rainbow Creek
IUCN Ia
Research Natural Area
2.31 km² overlap
Grande Ronde River Segment D
IUCN V
Designated - Recreational
0.63 km² overlap
Grande Ronde, Oregon
IUCN V
Wild and Scenic River
0.49 km² overlap

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

Species present

938 distinct species · 7 386 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 40 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

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bassin de Wenaha River : 22 espèces reliées par 96 interactions GloBI sur 5 types (connectance 12.3%, filtre Serrano α=0.2). 18 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

Connectance

0.123

Patrimoniales

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°

4,9°C

Annual rain

705mm

Moisture idx (CMI)

-0,20

Runoff

178mm/an

PET

891mm

AET

533mm

Mean slope

18,0°

Water table

842cm

Forest

85%

Crops

Urban

Protected

85%

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