HydroBASINS lev08 watershed · #4081158950
Bassin de Kaluganga
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 7 administrative regions : Ambagamuwa, Balangoda, Kuruvita, Nivithigala, Opanayaka +2
Sub-basin area
358,2km²
Upstream area
358,2km²
Discharge
16,58m³/s
Mean elev.
489m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
7 dept-equivalent regions (GADM L2)
- 256.4 km²71.9% of basin
- PelmadullaRatnapura · Sri Lanka80.9 km²22.7% of basin
- 7.6 km²2.1% of basin
- 5.7 km²1.6% of basin
- AmbagamuwaNuwara Eliya · Sri Lanka5.4 km²1.5% of basin
- 0.6 km²0.2% of basin
- NivithigalaRatnapura · Sri Lanka0.0 km²0.0% of basin
7 intersecting protected areas
Central Highlands of Sri Lanka
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
57.16 km² overlap
Peak Wilderness NR
IUCN IaNature Reserve
48.90 km² overlap
Bamborabotuwa
IUCN IbReserved Forest
33.07 km² overlap
Peak Wilderness
IUCN Not ReportedConservation Forest
5.56 km² overlap
Hidellena
IUCN Not ReportedForest Reserve
0.27 km² overlap
Morahela
IUCN IbReserved Forest
0.26 km² overlap
Warnagalawatta EPA
IUCN IbEnvironmental Protection Area (EPA)
0.10 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
761 distinct species · 13 423 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 28 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 Kaluganga : 24 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 26 interactions GloBI sur 3 types (connectance 6.9%, filtre Serrano α=0.2). 4 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°
24,4°C
Annual rain
3 588mm
Moisture idx (CMI)
0,58
Runoff
1 374mm/an
PET
1 499mm
AET
1 488mm
Mean slope
13,5°
Water table
444cm
Forest
58%
Crops
30%
Urban
17%
Protected
26%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)