HydroBASINS lev08 watershed · #8080227680
Bassin de Middle Fork Gulkana 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 : Southeast Fairbanks, Valdez-Cordova
Sub-basin area
678,3km²
Upstream area
678,3km²
Discharge
13,96m³/s
Mean elev.
1 048m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 502.4 km²73.6% of basin
- 180.1 km²26.4% of basin
2 intersecting protected areas
Delta River
IUCN VDesignated - Scenic
61.07 km² overlap
Gulkana River
IUCN VDesignated - Wild
26.35 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
509 distinct species · 21 459 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 35 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 Middle Fork Gulkana River : 23 espèces reliées par 95 interactions GloBI sur 3 types (connectance 14.3%, 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°
-5,9°C
Annual rain
255mm
Moisture idx (CMI)
-0,48
Runoff
621mm/an
PET
494mm
AET
243mm
Mean slope
7,3°
Water table
151cm
Forest
0%
Crops
0%
Urban
0%
Protected
19%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)