HydroBASINS lev08 watershed · #7080572050

Bassin de South Fork 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 4 administrative regions : Alpine, Amador, El Dorado, Sacramento

13% lakePfafstetter: 77444004

Sub-basin area

2 198,4km²

Upstream area

2 198,4km²

Discharge

34,44m³/s

Mean elev.

1 302m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de American River506 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

4 dept-equivalent regions (GADM L2)

El Dorado
California · United States
2092.3 km²
95.1% of basin
Amador
California · United States
50.5 km²
2.3% of basin
Alpine
California · United States
50.4 km²
2.3% of basin
Sacramento
California · United States
6.9 km²
0.3% of basin

15 intersecting protected areas

Desolation
IUCN Ib
Wilderness
68.29 km² overlap
Mokelumne
IUCN Ib
Wilderness
15.19 km² overlap
Peavine Point
IUCN Ia
Research Natural Area
4.35 km² overlap
Station Creek
IUCN Ia
Research Natural Area
3.41 km² overlap
Pine Hill
IUCN V
Ecological Reserve
2.70 km² overlap
Salmon Falls Ranch
IUCN V
Private Conservation
2.52 km² overlap
Brush Creek Ranch
IUCN V
Private Conservation
0.79 km² overlap
Van Noord
IUCN V
Private Conservation
0.30 km² overlap
Cronan Ranch
IUCN V
Private Conservation
0.26 km² overlap

6 more protected areassorted by overlap area

Boulder Glen
IUCN V
Private Conservation
0.17 km² overlap
Weiner
IUCN V
Private Conservation
0.15 km² overlap
Thomas
IUCN V
Private Conservation
0.09 km² overlap
Nash
IUCN V
Private Conservation
0.08 km² overlap
Pearson
IUCN V
Private Conservation
0.05 km² overlap
Chili Bar
IUCN V
Private Conservation
0.03 km² overlap

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

Species present

6 081 distinct species · 447 457 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 41 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 South Fork American River : 30 espèces reliées par 83 interactions GloBI sur 4 types (connectance 9.2%, filtre Serrano α=0.2). 13 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

Connectance

0.092

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°

10,7°C

Annual rain

1 132mm

Moisture idx (CMI)

-0,01

Runoff

505mm/an

PET

1 153mm

AET

624mm

Mean slope

10,2°

Water table

470cm

Forest

97%

Crops

Urban

Protected

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