HydroBASINS lev08 watershed · #8080002140
Bassin de Knik 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 : Anchorage, Matanuska-Susitna
Sub-basin area
486,7km²
Upstream area
3 212,6km²
Discharge
137,62m³/s
Mean elev.
705m
Administrative coverage
Hydrographic chain
▼ Drains into
Outlet (drains to ocean / endorheic)
▲ Receives from 2 basins
- Bassin de Hunter Creek207 km²
- Bassin de Knik River112 km²
2 dept-equivalent regions (GADM L2)
- 455.1 km²93.0% of basin
- 3.9 km²0.8% of basin
2 intersecting protected areas
Chugach
IUCN VState Park
39.54 km² overlap
Palmer Hay Flats State
IUCN VGame Refuge
0.61 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
718 distinct species · 26 943 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 Knik River : 28 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 69 interactions GloBI sur 4 types (connectance 8.8%, filtre Serrano α=0.2). 12 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°
-1,2°C
Annual rain
560mm
Moisture idx (CMI)
0,15
Runoff
869mm/an
PET
471mm
AET
361mm
Mean slope
18,6°
Water table
557cm
Forest
13%
Crops
0%
Urban
0%
Protected
8%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)