HydroBASINS lev08 watershed · #7080403070
Bassin de Clackamas 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 4 administrative regions : Clackamas, Jefferson, Marion, Wasco
Sub-basin area
2 502,4km²
Upstream area
2 502,5km²
Discharge
104,06m³/s
Mean elev.
816m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- 2271.4 km²90.6% of basin
- Marion231.2 km²9.2% of basin
- 4.3 km²0.2% of basin
- Jefferson1.1 km²0.0% of basin
30 intersecting protected areas
Roaring River
IUCN IbWilderness
147.85 km² overlap
Bull Of The Woods
IUCN IbWilderness
144.50 km² overlap
Salmon-Huckleberry
IUCN IbWilderness
52.19 km² overlap
Clackamas
IUCN IbWilderness
38.30 km² overlap
Clackamas, Oregon
IUCN VWild and Scenic River
37.24 km² overlap
Clackamas, Oregon
IUCN VWild and Scenic River
26.06 km² overlap
Designated - Recreational
22.51 km² overlap
Roaring, Oregon
IUCN VWild and Scenic River
18.58 km² overlap
Roaring River
IUCN VDesignated - Wild
18.55 km² overlap
21 more protected areassorted by overlap area
Fish Creek, Oregon
IUCN VWild and Scenic River
16.52 km² overlap
Fish Creek
IUCN VDesignated - Recreational
16.40 km² overlap
Designated - Scenic
16.13 km² overlap
Collawash, Oregon
IUCN VWild and Scenic River
15.59 km² overlap
Designated - Recreational
11.86 km² overlap
Wild and Scenic River
10.71 km² overlap
Collawash, Oregon
IUCN VWild and Scenic River
8.06 km² overlap
Designated - Scenic
7.26 km² overlap
Protection Area (National)
6.40 km² overlap
Wild and Scenic River
5.87 km² overlap
South Fork Clackamas
IUCN VDesignated - Wild
5.20 km² overlap
Wild and Scenic River
4.18 km² overlap
Roaring River Potential
IUCN IbWilderness Area
4.05 km² overlap
Designated - Recreational
2.87 km² overlap
Designated - Scenic
2.67 km² overlap
Bagby
IUCN IaResearch Natural Area
2.52 km² overlap
Clear Creek Canyon
IUCN VNatural Area
1.56 km² overlap
Natural Area
1.38 km² overlap
Protection Area (National)
1.13 km² overlap
River Island
IUCN VNatural Area
0.92 km² overlap
Bakers Ferry
IUCN VNatural Area
0.79 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 134 distinct species · 225 541 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 37 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 Clackamas River : 24 espèces reliées par 94 interactions GloBI sur 4 types (connectance 13.4%, 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°
7,6°C
Annual rain
2 025mm
Moisture idx (CMI)
0,57
Runoff
1 294mm/an
PET
841mm
AET
654mm
Mean slope
11,4°
Water table
434cm
Forest
86%
Crops
4%
Urban
2%
Protected
9%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)