HydroBASINS lev08 watershed · #5080122250
Bassin de Sungai Milian
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 : Nabawan, Tongod
Sub-basin area
1 646,5km²
Upstream area
1 646,5km²
Discharge
46,85m³/s
Mean elev.
474m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 1615.7 km²98.6% of basin
- 23.6 km²1.4% of basin
7 intersecting protected areas
Forest Reserve
225.08 km² overlap
Maliau Basin
IUCN IaForest Reserve
119.73 km² overlap
Sungai Imbak Buffer Zone
IUCN IaForest Reserve
101.16 km² overlap
Forest Reserve
39.58 km² overlap
Sungai Lulungoyan
IUCN IaForest Reserve
21.40 km² overlap
Imbak Canyon
IUCN IaForest Reserve
1.10 km² overlap
Forest Reserve
0.16 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
385 distinct species · 540 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 22 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 Milian : 21 espèces dont 5 patrimoniales (LR IUCN CR/EN/VU) reliées par 15 interactions GloBI sur 2 types (connectance 6.5%, 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°
24,7°C
Annual rain
2 390mm
Moisture idx (CMI)
0,41
Runoff
973mm/an
PET
1 415mm
AET
1 415mm
Mean slope
11,7°
Water table
338cm
Forest
83%
Crops
11%
Urban
0%
Protected
10%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)