HydroBASINS lev08 watershed · #4080987990
Bassin de Watrak
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 : Ahmadabad, Aravalli, Gandhinagar, Kheda, Sabar Kantha
Sub-basin area
428,2km²
Upstream area
3 169,9km²
Discharge
22m³/s
Mean elev.
63m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Watrak1770 km²
- Bassin de Majham971 km²
5 dept-equivalent regions (GADM L2)
- 316.8 km²74.2% of basin
- 70.8 km²16.6% of basin
- 28.0 km²6.5% of basin
- 7.4 km²1.7% of basin
- 4.2 km²1.0% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
132 distinct species · 576 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 Watrak : 27 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 45 interactions GloBI sur 3 types (connectance 8.0%, filtre Serrano α=0.2). 7 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°
27,2°C
Annual rain
801mm
Moisture idx (CMI)
-0,57
Runoff
224mm/an
PET
1 856mm
AET
675mm
Mean slope
0,4°
Water table
58cm
Forest
1%
Crops
98%
Urban
4%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)