HydroBASINS lev08 watershed · #7080546160
Bassin de Smithneck Creek
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 : Plumas, Sierra
Sub-basin area
773km²
Upstream area
773,1km²
Discharge
5,17m³/s
Mean elev.
1 758m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- Sierra626.1 km²80.9% of basin
- 147.7 km²19.1% of basin
11 intersecting protected areas
Antelope Valley
IUCN VWildlife Area
22.53 km² overlap
Smithneck Creek
IUCN VWildlife Area
5.93 km² overlap
Conservation
IUCN Not AssignedEasement
5.51 km² overlap
Sierra Crest Conservation Easement, Phase III
IUCN Not AssignedConservation Easement
3.51 km² overlap
Babbitt Peak
IUCN IaResearch Natural Area
3.42 km² overlap
Conservation Easement
1.16 km² overlap
Sierra Valley
IUCN VPreserve
1.09 km² overlap
Reserve Program
1.08 km² overlap
Balderston Ranch
IUCN Not AssignedConservation Easement
0.64 km² overlap
2 more protected areassorted by overlap area
Reserve Program
0.39 km² overlap
Easement
0.33 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 254 distinct species · 281 891 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 Smithneck Creek : 19 espèces reliées par 67 interactions GloBI sur 4 types (connectance 14.4%, filtre Serrano α=0.2). 12 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°
6,8°C
Annual rain
713mm
Moisture idx (CMI)
-0,34
Runoff
382mm/an
PET
1 099mm
AET
525mm
Mean slope
7,7°
Water table
336cm
Forest
67%
Crops
9%
Urban
0%
Protected
4%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)