HydroBASINS lev08 watershed · #7080321450

Bassin de Okanogan 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 1 administrative regions : Okanogan

2% lakePfafstetter: 78262017

Sub-basin area

1 018,4km²

Upstream area

19 475,4km²

Discharge

88,13m³/s

Mean elev.

749m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Okanogan River97 km²

▲ Receives from 2 basins

Bassin de Okanogan River647 km²
Bassin de Bonaparte Creek378 km²

1 dept-equivalent regions (GADM L2)

Okanogan
Washington · United States
1021.5 km²
100.0% of basin

8 intersecting protected areas

Scotch Creek
IUCN V
Wildlife Area Complex
44.58 km² overlap
Sinlahekin
IUCN V
Wildlife Area Complex
26.69 km² overlap
Scotch Creek 2012
IUCN V
Environmental System
1.12 km² overlap
Mcloughlin Falls 2012
IUCN V
Environmental System
0.67 km² overlap
Sinlahekin 2
IUCN Not Assigned
Conservation Easement
0.46 km² overlap
Sinlahekin 1
IUCN Not Assigned
Conservation Easement
0.16 km² overlap
Riverside Breaks
IUCN V
Natural Area Preserve
0.14 km² overlap
Sinlahekin Deer
IUCN V
Winter Range And Wildlife Refuge
0.08 km² overlap

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

Species present

760 distinct species · 34 611 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 33 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 Okanogan River : 24 espèces reliées par 109 interactions GloBI sur 4 types (connectance 19.4%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

109

Connectance

0.194

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°

7,2°C

Annual rain

331mm

Moisture idx (CMI)

-0,65

Runoff

154mm/an

PET

942mm

AET

288mm

Mean slope

10,0°

Water table

882cm

Forest

48%

Crops

Urban

Protected

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