HydroBASINS lev08 watershed · #7080013610
Bassin de Napa 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 3 administrative regions : Napa, Solano, Sonoma
Sub-basin area
1 106km²
Upstream area
1 106km²
Discharge
15,5m³/s
Mean elev.
200m
Administrative coverage
3 dept-equivalent regions (GADM L2)
- 974.0 km²88.0% of basin
- 100.4 km²9.1% of basin
- 32.2 km²2.9% of basin
30 intersecting protected areas
Napa-Sonoma Marshes
IUCN VWildlife Area
47.85 km² overlap
San Pablo Bay
IUCN IVNational Wildlife Refuge
15.75 km² overlap
Marine Protected Area
10.21 km² overlap
Dunn-Wildlake Ranch
IUCN VPreserve
8.87 km² overlap
Sutro Ranch
IUCN VPrivate Conservation
4.66 km² overlap
Skyline
IUCN VWilderness Park
4.13 km² overlap
Duff Ranch
IUCN VPrivate Conservation
3.97 km² overlap
Reserve Program
3.81 km² overlap
Moore Creek
IUCN VWilderness Park
2.91 km² overlap
21 more protected areassorted by overlap area
Suscol Headwaters
IUCN VPreserve
2.87 km² overlap
Unknown or Unnamed
IUCN Not AssignedConservation Easement
2.82 km² overlap
Newell Open Spac
IUCN VOpen Space
2.56 km² overlap
Foote
IUCN VBotanical Preserve
2.54 km² overlap
Conservation
IUCN Not AssignedEasement
2.09 km² overlap
Marine Protected Area
1.71 km² overlap
Archer Taylor
IUCN VPreserve
1.44 km² overlap
Rector Reservoir
IUCN VWildlife Area
1.41 km² overlap
Fagan Marsh
IUCN VEcological Reserve
1.24 km² overlap
Vallejo Swett
IUCN VPrivate Conservation
1.20 km² overlap
Live Oaks Ranch
IUCN VPrivate Conservation
0.80 km² overlap
Ghisleta - South
IUCN VWetlands
0.80 km² overlap
Bumpy Camp
IUCN VNature Preserve
0.60 km² overlap
Linda Falls Preseve
IUCN VPrivate Conservation
0.42 km² overlap
Bruchman Cheyney
IUCN VPreserve
0.42 km² overlap
Georges III - 4
IUCN Not AssignedConservation Easement
0.30 km² overlap
UCC Vineyard Addition
IUCN VPrivate Conservation
0.27 km² overlap
Preserve
0.27 km² overlap
Napa River
IUCN VEcological Reserve
0.25 km² overlap
Bald Mountain Ranch
IUCN Not AssignedConservation Easement
0.25 km² overlap
Lynch Canyon
IUCN VPrivate Conservation
0.24 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 342 distinct species · 779 830 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 30 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 Napa River : 18 espèces reliées par 69 interactions GloBI sur 2 types (connectance 14.8%, filtre Serrano α=0.2). 13 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°
14,5°C
Annual rain
821mm
Moisture idx (CMI)
-0,37
Runoff
457mm/an
PET
1 306mm
AET
587mm
Mean slope
7,4°
Water table
323cm
Forest
79%
Crops
19%
Urban
11%
Protected
6%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)