HydroBASINS lev08 watershed · #7080397350
Bassin de Sandy 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, Hood River, Multnomah, Wasco
Sub-basin area
1 298,8km²
Upstream area
1 298,9km²
Discharge
55,19m³/s
Mean elev.
806m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- 970.9 km²74.6% of basin
- 326.0 km²25.0% of basin
- 3.6 km²0.3% of basin
- 1.2 km²0.1% of basin
30 intersecting protected areas
Salmon-Huckleberry
IUCN IbWilderness
199.58 km² overlap
Mount Hood
IUCN IbWilderness
132.19 km² overlap
Salmon, Oregon
IUCN VWild and Scenic River
19.39 km² overlap
Salmon River Segment A
IUCN VDesignated - Recreational
17.51 km² overlap
Sandy, Oregon
IUCN VWild and Scenic River
14.64 km² overlap
Salmon River Segment B
IUCN VDesignated - Wild
14.58 km² overlap
Salmon, Oregon
IUCN VWild and Scenic River
14.15 km² overlap
Sandy River Segment C
IUCN VDesignated - Recreational
11.77 km² overlap
Sandy River Section B
IUCN VDesignated - Recreational
10.53 km² overlap
21 more protected areassorted by overlap area
Salmon River Segment E
IUCN VDesignated - Scenic
7.41 km² overlap
Zig Zag River, Oregon
IUCN VWild and Scenic River
6.16 km² overlap
Sandy River Segment C
IUCN VDesignated - Scenic
6.16 km² overlap
Sandy River Section A
IUCN VDesignated - Wild
3.54 km² overlap
Salmon River Segment D
IUCN VDesignated - Recreational
2.70 km² overlap
Sandy River Gorge
IUCN VPrivate Conservation Land
1.61 km² overlap
Bull Run
IUCN IaResearch Natural Area
1.50 km² overlap
Buck and Gordon Creeks
IUCN VNatural Area
1.34 km² overlap
Sandy Ridge Trail System
IUCN VTrail
0.81 km² overlap
Access
0.80 km² overlap
Springdale
IUCN VNatural Area
0.78 km² overlap
Salmon River Segment C
IUCN VDesignated - Recreational
0.78 km² overlap
Chinquapin Bluffs
IUCN VNatural Area
0.56 km² overlap
Protection Area (Administrative)
0.37 km² overlap
Unknown
IUCN VPark
0.18 km² overlap
South Beaver Creek
IUCN VGreenway
0.14 km² overlap
White River Segment F
IUCN VDesignated - Recreational
0.13 km² overlap
Mark O. Hatfield
IUCN IbWilderness
0.06 km² overlap
Roaring River
IUCN IbWilderness
0.05 km² overlap
White River Segment A
IUCN VDesignated - Recreational
0.05 km² overlap
Bellingham
IUCN VGreenway
0.02 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 213 distinct species · 370 240 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 46 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 Sandy River : 33 espèces reliées par 98 interactions GloBI sur 4 types (connectance 9.5%, 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°
7,5°C
Annual rain
2 141mm
Moisture idx (CMI)
0,61
Runoff
1 338mm/an
PET
826mm
AET
654mm
Mean slope
13,0°
Water table
484cm
Forest
90%
Crops
3%
Urban
2%
Protected
24%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)