HydroBASINS lev08 watershed · #5080021820
Bassin de Sungai Gagayan
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 : Kota Baru, Tanah Bumbu
Sub-basin area
1 399,5km²
Upstream area
1 399,5km²
Discharge
39,9m³/s
Mean elev.
165m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- 1280.1 km²91.9% of basin
- 109.1 km²7.8% of basin
2 intersecting protected areas
Nature Reserve
33.86 km² overlap
Teluk Kelumpang
IUCN Not ReportedMarine Protected Area
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
161 distinct species · 848 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 21 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 Sungai Gagayan : 20 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 16 interactions GloBI sur 3 types (connectance 7.6%, filtre Serrano α=0.2). 1 bulle taxonomique (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°
25,9°C
Annual rain
2 588mm
Moisture idx (CMI)
0,41
Runoff
1 030mm/an
PET
1 524mm
AET
1 495mm
Mean slope
6,1°
Water table
201cm
Forest
36%
Crops
31%
Urban
0%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)