HydroBASINS lev08 watershed · #7080375110
Bassin de North Fork Ahtanum Creek
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 1 administrative regions : Yakima
Sub-basin area
1 556,9km²
Upstream area
9 940km²
Discharge
83,62m³/s
Mean elev.
619m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Selah Creek1386 km²
- Bassin de Yakima River10 km²
1 dept-equivalent regions (GADM L2)
- 1561.0 km²100.0% of basin
3 intersecting protected areas
Oak Creek
IUCN VWildlife Area Complex
6.84 km² overlap
Sunnyside-Snake River
IUCN VWildlife Area Complex
4.78 km² overlap
Moxee Bog
IUCN VPrivate Conservation Land
0.03 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 023 distinct species · 282 193 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 North Fork Ahtanum Creek : 25 espèces reliées par 81 interactions GloBI sur 4 types (connectance 17.4%, filtre Serrano α=0.2). 6 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°
8,5°C
Annual rain
407mm
Moisture idx (CMI)
-0,59
Runoff
133mm/an
PET
996mm
AET
261mm
Mean slope
5,6°
Water table
700cm
Forest
24%
Crops
24%
Urban
5%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)