HydroBASINS lev08 watershed · #4080617250
Bassin de 三水河
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 : Qingyang, Tongchuan, Xianyang, Yan'an
Sub-basin area
1 314,8km²
Upstream area
1 315km²
Discharge
3,4m³/s
Mean elev.
1 377m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- 1298.5 km²98.8% of basin
- 14.6 km²1.1% of basin
- 1.0 km²0.1% of basin
- 0.7 km²0.1% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
197 distinct species · 429 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 16 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 三水河 : 13 espèces reliées par 12 interactions GloBI sur 2 types (connectance 10.0%, filtre Serrano α=0.2). 3 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°
9,5°C
Annual rain
611mm
Moisture idx (CMI)
-0,36
Runoff
82mm/an
PET
951mm
AET
521mm
Mean slope
12,7°
Water table
592cm
Forest
62%
Crops
33%
Urban
2%
Protected
11%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)