HydroBASINS lev08 watershed · #7080392700
Bassin de Lake Branch
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 5 administrative regions : Clackamas, Hood River, Klickitat, Multnomah, Wasco
Sub-basin area
1 244,9km²
Upstream area
605 148,2km²
Discharge
5 702,65m³/s
Mean elev.
792m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de South Fork Mill Creek387 km²
- Bassin de Klickitat River322 km²
5 dept-equivalent regions (GADM L2)
- 930.9 km²74.6% of basin
- 158.2 km²12.7% of basin
- 156.5 km²12.5% of basin
- 1.9 km²0.1% of basin
- 0.4 km²0.0% of basin
22 intersecting protected areas
Mount Hood
IUCN IbWilderness
95.68 km² overlap
Wild and Scenic River
16.76 km² overlap
Watershed Protection Area
11.42 km² overlap
Wild and Scenic River
4.44 km² overlap
Mark O. Hatfield
IUCN IbWilderness
3.70 km² overlap
Badger Creek
IUCN IbWilderness
1.21 km² overlap
Klickitat
IUCN VWildlife Area Complex
0.94 km² overlap
Tom Mccall At Rowena
IUCN VPrivate Conservation Land
0.61 km² overlap
Wild and Scenic River
0.39 km² overlap
13 more protected areassorted by overlap area
Rowena Plateau
IUCN VState Natural Area
0.33 km² overlap
Memaloose
IUCN VState Natural Area
0.31 km² overlap
Gumjuwac-Tolo
IUCN IaResearch Natural Area
0.25 km² overlap
White River Segment F
IUCN VDesignated - Recreational
0.21 km² overlap
Columbia Oaks
IUCN VState Natural Area
0.20 km² overlap
Conservation
IUCN VEasement
0.18 km² overlap
PCON12
IUCN VLocal Land Trust
0.16 km² overlap
Rowena
IUCN Not AssignedEasement
0.12 km² overlap
Bull Run
IUCN IaResearch Natural Area
0.06 km² overlap
Jewett Creek
IUCN VPark
0.03 km² overlap
White River Segment A
IUCN VDesignated - Recreational
0.01 km² overlap
Conservation Land
0.01 km² overlap
Klickitat, Washington
IUCN VWild and Scenic River
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
5 131 distinct species · 319 980 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 40 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 Lake Branch : 30 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 89 interactions GloBI sur 5 types (connectance 11.4%, 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°
7,5°C
Annual rain
1 426mm
Moisture idx (CMI)
0,27
Runoff
952mm/an
PET
882mm
AET
569mm
Mean slope
11,6°
Water table
466cm
Forest
88%
Crops
9%
Urban
1%
Protected
8%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)