HydroBASINS lev08 watershed · #4080863610
Bassin de Puna Tsang Chhu
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 39 administrative regions : Athang, Barp, Barshong, Bjenag, Chang +34
Sub-basin area
2 521km²
Upstream area
8 191,1km²
Discharge
103,58m³/s
Mean elev.
2 268m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Puna Tsang Chhu653 km²
- Bassin de Puna Tsang Chhu217 km²
39 dept-equivalent regions (GADM L2)
- 776.6 km²30.9% of basin
- 344.8 km²13.7% of basin
- 206.4 km²8.2% of basin
- 150.7 km²6.0% of basin
- 148.9 km²5.9% of basin
- 136.4 km²5.4% of basin
- 130.0 km²5.2% of basin
- 107.9 km²4.3% of basin
31 moreFull L2 list
- Gangteng95.8 km² · 3.8%
- Nahi67.0 km² · 2.7%
- Dunglegang45.3 km² · 1.8%
- Drugyelgang40.1 km² · 1.6%
- Bjenag39.0 km² · 1.5%
- Tsangkha36.7 km² · 1.5%
- Tsirangtoe31.4 km² · 1.2%
- Gasetsho Gom29.0 km² · 1.2%
- Rangthangling24.6 km² · 1.0%
- Kikorthang17.7 km² · 0.7%
- Barshong16.0 km² · 0.6%
- Shemjong14.7 km² · 0.6%
- Mendrelgang13.9 km² · 0.6%
- Tsholingkhor13.1 km² · 0.5%
- Gosarling10.2 km² · 0.4%
- Tangsibji5.2 km² · 0.2%
- Tseza3.1 km² · 0.1%
- Thedtsho2.8 km² · 0.1%
- Sephu1.5 km² · 0.1%
- Chhudzom1.4 km² · 0.1%
- Patshaling1.4 km² · 0.1%
- Darkala1.2 km² · 0.0%
- Barp1.2 km² · 0.0%
- Khipisa0.7 km² · 0.0%
- Toepisa0.5 km² · 0.0%
- Chang0.5 km² · 0.0%
- Korpoog0.4 km² · 0.0%
- Jigmichhoeling0.4 km² · 0.0%
- Langthil0.2 km² · 0.0%
- Gakiling0.1 km² · 0.0%
- Dangchu0.0 km² · 0.0%
7 intersecting protected areas
National Park
626.96 km² overlap
Biological Corridor 2
IUCN VIBiological Corridor
281.52 km² overlap
Biological Corridor 8
IUCN VIBiological Corridor
134.12 km² overlap
Biological Corridor 3
IUCN VIBiological Corridor
10.83 km² overlap
Gangtey-Phobji
IUCN Not ReportedWetland of International Importance (Ramsar Site)
9.80 km² overlap
Waklatar to Balawni
IUCN Not ApplicableKey Biodiversity Area
5.20 km² overlap
Royal Botanical Park
IUCN IIINatural Monument or Feature
0.54 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 357 distinct species · 32 506 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 14 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 Puna Tsang Chhu : 13 espèces reliées par 15 interactions GloBI sur 2 types (connectance 14.3%, filtre Serrano α=0.2). 2 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°
12,7°C
Annual rain
2 073mm
Moisture idx (CMI)
0,35
Runoff
616mm/an
PET
1 082mm
AET
885mm
Mean slope
25,5°
Water table
914cm
Forest
65%
Crops
3%
Urban
0%
Protected
38%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)