Ontologia

HydroBASINS lev08 watershed · #7080503410

Bassin de South Fork Pit 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 2 administrative regions : Lassen, Modoc

13% lakePfafstetter: 77449960

Sub-basin area

1 612,8km²

Upstream area

1 612,8km²

Discharge

2,9m³/s

Mean elev.

1 741m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Pit River2526 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

2 dept-equivalent regions (GADM L2)

7 intersecting protected areas

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

Species present

1 839 distinct species · 74 271 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

74 271 obs · 45 cellules
Obs. / cellule
≥ 41 468
2 352–41 467
851–2 351
328–850
< 328

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

Ecological tissue

Sample of 32 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 South Fork Pit River : 25 espèces reliées par 74 interactions GloBI sur 4 types (connectance 14.9%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
32
Interactions affichées
74
Connectance
0.149
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

413mm

Moisture idx (CMI)

-0,61

Runoff

99mm/an

PET

1 068mm

AET

354mm

Mean slope

5,7°

Water table

415cm

Forest

54%

Crops

7%

Urban

0%

Protected

11%

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