HydroBASINS lev08 watershed · #7080567150
Bassin de North 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 2 administrative regions : Nevada, Placer
Sub-basin area
901,4km²
Upstream area
901,4km²
Discharge
23,19m³/s
Mean elev.
1 318m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 902.0 km²100.0% of basin
- Nevada0.2 km²0.0% of basin
10 intersecting protected areas
Wild and Scenic River
47.75 km² overlap
Reserve
20.72 km² overlap
North Fork American
IUCN VWild and Scenic River
16.84 km² overlap
Private Conservation
8.64 km² overlap
Royal Gorge
IUCN VPrivate Conservation
8.18 km² overlap
Lyon Peak/Needle Lake
IUCN IaResearch Natural Area
2.65 km² overlap
Snow Mountain
IUCN VPrivate Conservation
2.61 km² overlap
Sugar Pine Point
IUCN IaResearch Natural Area
2.61 km² overlap
Granite Chief
IUCN IbWilderness
0.38 km² overlap
1 more protected areassorted by overlap area
Auburn State
IUCN VRecreation Area
0.19 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 896 distinct species · 73 169 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 50 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).
Indicateurs du tissu écologique
Tissu écologique de Bassin de North Fork American River : 36 espèces reliées par 108 interactions GloBI sur 6 types (connectance 8.5%, filtre Serrano α=0.2). 15 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
10,5°C
Annual rain
1 366mm
Moisture idx (CMI)
0,15
Runoff
681mm/an
PET
1 139mm
AET
648mm
Mean slope
15,3°
Water table
645cm
Forest
100%
Crops
0%
Urban
0%
Protected
8%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)