HydroBASINS lev08 watershed · #7080014080
Bassin de Freshwater 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 : Humboldt
Sub-basin area
284,5km²
Upstream area
284,5km²
Discharge
0,82m³/s
Mean elev.
157m
Administrative coverage
1 dept-equivalent regions (GADM L2)
- Humboldt267.8 km²94.0% of basin
13 intersecting protected areas
Humboldt Bay
IUCN IVNational Wildlife Refuge
4.40 km² overlap
Marine Protected Area
3.85 km² overlap
Wildlife Area
2.41 km² overlap
Mad River Slough
IUCN VWildlife Area
2.29 km² overlap
Fay Slough
IUCN VWildlife Area
2.03 km² overlap
Marine Protected Area
1.51 km² overlap
Arcata Marsh &
IUCN VWildlife Sanctuary
1.26 km² overlap
Reserve Program
0.96 km² overlap
Sunnybrae
IUCN Not AssignedConservation Easement
0.75 km² overlap
4 more protected areassorted by overlap area
Freshwater Farms
IUCN VReserve
0.29 km² overlap
Agricultural Conservation Easement Program - Wetland Reserve Easements (ACEP-WRE), Humboldt, CA
IUCN VConservation Easement
0.05 km² overlap
Dellanina
IUCN VNature Preserve
0.01 km² overlap
Elk River
IUCN VWildlife Area
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 143 distinct species · 1 266 284 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 Freshwater Creek : 18 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 66 interactions GloBI sur 3 types (connectance 13.3%, filtre Serrano α=0.2). 14 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°
11,4°C
Annual rain
1 256mm
Moisture idx (CMI)
0,31
Runoff
1 063mm/an
PET
864mm
AET
601mm
Mean slope
6,9°
Water table
237cm
Forest
75%
Crops
4%
Urban
12%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)