HydroBASINS lev08 watershed · #5080019820
Bassin de Sungai Umas Umas
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 : Kunak, Tawau
Sub-basin area
794,1km²
Upstream area
794,3km²
Discharge
14,6m³/s
Mean elev.
232m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- 783.6 km²99.1% of basin
- 4.8 km²0.6% of basin
4 intersecting protected areas
Ulu Kalumpang
IUCN IaForest Reserve
77.14 km² overlap
Tawau Hill Park
IUCN IIState Park
75.96 km² overlap
Mount Louisa
IUCN IaForest Reserve
17.35 km² overlap
Umas Umas
IUCN IaForest Reserve
8.34 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
743 distinct species · 8 920 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 6 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 Umas Umas : 6 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 3 interactions GloBI sur 1 type (connectance 20.0%, filtre Serrano α=0.2).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
25,8°C
Annual rain
2 107mm
Moisture idx (CMI)
0,30
Runoff
821mm/an
PET
1 480mm
AET
1 479mm
Mean slope
7,7°
Water table
296cm
Forest
28%
Crops
40%
Urban
1%
Protected
20%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)