HydroBASINS lev08 watershed · #7080543120
Bassin de Big Dry 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 1 administrative regions : Tehama
Sub-basin area
249,1km²
Upstream area
29 282,3km²
Discharge
286,26m³/s
Mean elev.
325m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Sacramento River2949 km²
- Bassin de Thomes Creek781 km²
1 dept-equivalent regions (GADM L2)
- 249.3 km²100.0% of basin
4 intersecting protected areas
Ishi
IUCN IbWilderness
34.80 km² overlap
Deer Creek
IUCN VEasement
27.68 km² overlap
Reserve Program
1.10 km² overlap
Mill Creek
IUCN VEasement
0.68 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
249 distinct species · 1 184 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 49 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 Big Dry Creek : 33 espèces reliées par 150 interactions GloBI sur 5 types (connectance 12.8%, filtre Serrano α=0.2). 16 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°
15,7°C
Annual rain
769mm
Moisture idx (CMI)
-0,43
Runoff
383mm/an
PET
1 355mm
AET
566mm
Mean slope
5,5°
Water table
239cm
Forest
30%
Crops
10%
Urban
0%
Protected
14%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)