Ontologia

HydroBASINS lev08 watershed · #7080466450

Bassin de Williamson 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 : Klamath

Pfafstetter: 77480807

Sub-basin area

74,7km²

Upstream area

1 053,4km²

Discharge

5,76m³/s

Mean elev.

1 406m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Williamson River342 km²

▲ Receives from 2 basins

1 dept-equivalent regions (GADM L2)

2 intersecting protected areas

  • Klamath Marsh

    IUCN IV

    National Wildlife Refuge

    25.73 km² overlap

  • Bluejay

    IUCN Ia

    Research Natural Area

    3.20 km² overlap

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

Species present

280 distinct species · 11 782 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

11 782 obs · 2 cellules
Obs. / cellule
≥ 10 638
10 638–10 637
10 638–10 637
10 638–10 637
< 10 638

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

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

Indicateurs du tissu écologique

Tissu écologique de Bassin de Williamson River : 24 espèces reliées par 86 interactions GloBI sur 4 types (connectance 16.3%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
33
Interactions affichées
86
Connectance
0.163
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°

6,5°C

Annual rain

503mm

Moisture idx (CMI)

-0,53

Runoff

248mm/an

PET

1 071mm

AET

426mm

Mean slope

1,9°

Water table

233cm

Forest

45%

Crops

4%

Urban

0%

Protected

4%

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