HydroBASINS lev08 watershed · #7080015230
Bassin de Hoh 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 : Clallam, Jefferson
Sub-basin area
1 067,7km²
Upstream area
1 067,7km²
Discharge
8,64m³/s
Mean elev.
519m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- Jefferson1000.3 km²93.4% of basin
- 59.0 km²5.5% of basin
10 intersecting protected areas
Olympic National Park
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
540.45 km² overlap
Olympic
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
540.45 km² overlap
Olympic
IUCN IINational Park
507.89 km² overlap
Olympic National Park
IUCN VMarine Protected Area
507.38 km² overlap
Daniel J. Evans
IUCN IbWilderness Area
475.63 km² overlap
Marine Protected Area
18.50 km² overlap
Local Land Trust
5.58 km² overlap
South Nolan
IUCN VNatural Resources Conservation Area
0.86 km² overlap
Quillayute Needles
IUCN IVNational Wildlife Refuge
0.11 km² overlap
1 more protected areassorted by overlap area
Washington Islands
IUCN IbWilderness Area
0.11 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 839 distinct species · 79 595 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 43 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 Hoh River : 33 espèces reliées par 76 interactions GloBI sur 4 types (connectance 8.4%, filtre Serrano α=0.2). 10 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°
7,6°C
Annual rain
2 936mm
Moisture idx (CMI)
0,75
Runoff
2 206mm/an
PET
746mm
AET
662mm
Mean slope
15,7°
Water table
502cm
Forest
92%
Crops
0%
Urban
0%
Protected
49%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)