HydroBASINS lev08 watershed · #7080430040
Bassin de Long Tom 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 : Benton, Lane
Sub-basin area
1 116,9km²
Upstream area
1 116,9km²
Discharge
37,77m³/s
Mean elev.
192m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- Lane1066.5 km²95.3% of basin
- Benton52.7 km²4.7% of basin
12 intersecting protected areas
Fern Ridge
IUCN VWildlife Area
21.43 km² overlap
Reserve Program
3.49 km² overlap
Willow Creek
IUCN VPrivate Conservation Land
2.08 km² overlap
Wetlands
1.26 km² overlap
Andrew Reasoner
IUCN Not AssignedConservation Easement
1.17 km² overlap
Reserve Program
0.81 km² overlap
South Eugene Hills
IUCN VPrivate Conservation
0.78 km² overlap
Coyote Spencer
IUCN VWetlands
0.65 km² overlap
Coyote Oaks
IUCN Not AssignedConservation Easement
0.59 km² overlap
3 more protected areassorted by overlap area
West Eugene
IUCN VWetlands
0.48 km² overlap
Rattlesnake Butte
IUCN VPrivate Conservation
0.21 km² overlap
Wetlands
0.19 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 723 distinct species · 1 628 652 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 Long Tom River : 22 espèces reliées par 63 interactions GloBI sur 4 types (connectance 14.5%, filtre Serrano α=0.2). 8 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°
11,0°C
Annual rain
1 272mm
Moisture idx (CMI)
0,20
Runoff
1 075mm/an
PET
1 011mm
AET
631mm
Mean slope
6,0°
Water table
221cm
Forest
55%
Crops
25%
Urban
7%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)