Ontologia

HydroBASINS lev08 watershed · #7080357690

Bassin de American 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 : Lewis, Pierce, Yakima

11% lakePfafstetter: 78261269

Sub-basin area

520,9km²

Upstream area

520,9km²

Discharge

11,51m³/s

Mean elev.

1 436m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Naches River335 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

3 dept-equivalent regions (GADM L2)

4 intersecting protected areas

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

Species present

1 355 distinct species · 17 133 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

17 133 obs · 15 cellules
Obs. / cellule
≥ 7 479
1 505–7 478
931–1 504
684–930
< 684

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

Ecological tissue

Sample of 38 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 American River : 23 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 96 interactions GloBI sur 5 types (connectance 13.0%, filtre Serrano α=0.2). 16 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
39
Interactions affichées
96
Connectance
0.130
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°

3,6°C

Annual rain

1 964mm

Moisture idx (CMI)

0,65

Runoff

847mm/an

PET

646mm

AET

534mm

Mean slope

18,1°

Water table

733cm

Forest

98%

Crops

0%

Urban

0%

Protected

75%

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