HydroBASINS lev08 watershed · #7080513440
Bassin de 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
Sub-basin area
2 526km²
Upstream area
7 544,9km²
Discharge
0m³/s
Mean elev.
1 451m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Dry Creek1718 km²
- Bassin de South Fork Pit River1613 km²
2 dept-equivalent regions (GADM L2)
- 2477.3 km²97.9% of basin
- 52.3 km²2.1% of basin
6 intersecting protected areas
Reserve Program
39.17 km² overlap
Ash Creek
IUCN VWildlife Area
24.19 km² overlap
Reserve Program
5.60 km² overlap
Devil'S Garden
IUCN IaResearch Natural Area
2.65 km² overlap
Modoc
IUCN IVNational Wildlife Refuge
2.50 km² overlap
Conservation Easement
1.22 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 861 distinct species · 32 006 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 Pit River : 23 espèces reliées par 105 interactions GloBI sur 4 types (connectance 18.7%, filtre Serrano α=0.2). 11 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°
7,7°C
Annual rain
415mm
Moisture idx (CMI)
-0,63
Runoff
141mm/an
PET
1 129mm
AET
355mm
Mean slope
3,4°
Water table
341cm
Forest
74%
Crops
5%
Urban
0%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)