Ontologia

HydroBASINS lev08 watershed · #7080319220

Bassin de Chewuch 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

Pfafstetter: 78261808

Sub-basin area

1 377km²

Upstream area

1 377km²

Discharge

9,43m³/s

Mean elev.

1 611m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Methow River115 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

1 dept-equivalent regions (GADM L2)

7 intersecting protected areas

  • Pasayten

    IUCN Ib

    Wilderness

    433.13 km² overlap

  • Chewuch

    IUCN Ia

    Research Natural Area

    35.90 km² overlap

  • Methow

    IUCN V

    Wildlife Area Complex

    34.77 km² overlap

  • Methow

    IUCN V

    Winter Range And Wildlife Refuge

    5.33 km² overlap

  • Roger Lake

    IUCN Ia

    Research Natural Area

    1.87 km² overlap

  • Mason

    IUCN Not Assigned

    Conservation Easement

    0.17 km² overlap

  • Loomis

    IUCN V

    Natural Resources Conservation Area

    0.14 km² overlap

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

Species present

1 381 distinct species · 48 966 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

48 966 obs · 42 cellules
Obs. / cellule
≥ 24 194
1 854–24 193
423–1 853
200–422
< 200

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

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

Indicateurs du tissu écologique

Tissu écologique de Bassin de Chewuch River : 27 espèces reliées par 88 interactions GloBI sur 5 types (connectance 11.3%, filtre Serrano α=0.2). 13 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
40
Interactions affichées
88
Connectance
0.113
Patrimoniales
0
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°

2,0°C

Annual rain

512mm

Moisture idx (CMI)

-0,26

Runoff

231mm/an

PET

718mm

AET

415mm

Mean slope

17,4°

Water table

714cm

Forest

87%

Crops

0%

Urban

0%

Protected

35%

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