HydroBASINS lev08 watershed · #4081153570
Bassin de Gundaaru
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 : Ramanathapuram, Virudunagar
Sub-basin area
310,4km²
Upstream area
2 069km²
Discharge
7,22m³/s
Mean elev.
72m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Tirumangalam Main Canal913 km²
- Bassin de Gundaaru846 km²
2 dept-equivalent regions (GADM L2)
- Virudunagar288.6 km²93.3% of basin
- Ramanathapuram20.6 km²6.7% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
165 distinct species · 995 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 39 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 Gundaaru : 31 espèces reliées par 49 interactions GloBI sur 3 types (connectance 6.6%, filtre Serrano α=0.2). 8 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°
29,0°C
Annual rain
792mm
Moisture idx (CMI)
-0,53
Runoff
114mm/an
PET
1 699mm
AET
668mm
Mean slope
0,1°
Water table
52cm
Forest
3%
Crops
77%
Urban
16%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)