HydroBASINS lev08 watershed · #4080050030
Bassin de Krindi Oya
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 13 administrative regions : Ambalanthota, Bandarawela, Ella, Hambantota, Haputale +8
Sub-basin area
2 004,9km²
Upstream area
2 004,9km²
Discharge
3,3m³/s
Mean elev.
159m
Administrative coverage
13 dept-equivalent regions (GADM L2)
- 500.5 km²25.1% of basin
- ThissamaharamaHambantota · Sri Lanka390.2 km²19.5% of basin
- LunugamveheraHambantota · Sri Lanka279.6 km²14.0% of basin
- HambantotaHambantota · Sri Lanka273.9 km²13.7% of basin
- ThanamalvilaMoneragala · Sri Lanka204.1 km²10.2% of basin
- HildummullaBadulla · Sri Lanka190.6 km²9.5% of basin
- 46.6 km²2.3% of basin
- SooriyawewaHambantota · Sri Lanka44.1 km²2.2% of basin
5 moreFull L2 list
- Bandarawela30.5 km² · 1.5%
- Katharagama7.3 km² · 0.4%
- Sevanagala4.6 km² · 0.2%
- Haputale2.3 km² · 0.1%
- Ambalanthota0.3 km² · 0.0%
25 intersecting protected areas
Lunugamwehera
IUCN IINational Park
158.23 km² overlap
Bogahapelessa
IUCN IbReserved Forest
115.79 km² overlap
Yala NP
IUCN IINational Park
99.53 km² overlap
Malassnagala
IUCN IbReserved Forest
97.16 km² overlap
Bundala
IUCN Not ReportedWetland of International Importance (Ramsar Site)
50.40 km² overlap
Wirawila - Tissa
IUCN IVSanctuary
43.74 km² overlap
Wetahirakanda
IUCN IVNature Reserve
39.89 km² overlap
Bundala NP
IUCN IINational Park
35.89 km² overlap
Bundala
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
27.43 km² overlap
16 more protected areassorted by overlap area
Tunkamahela
IUCN IbReserved Forest
14.44 km² overlap
Nimalawa
IUCN IVSanctuary
13.08 km² overlap
Kalukanda
IUCN IbReserved Forest
10.45 km² overlap
Wadinahelayaya
IUCN IbReserved Forest
7.27 km² overlap
Kandulugalakanda
IUCN IbReserved Forest
6.14 km² overlap
Bogahapathane
IUCN IbReserved Forest
5.67 km² overlap
Bibilihela
IUCN IbReserved Forest
4.20 km² overlap
Kinigama
IUCN IbReserved Forest
3.29 km² overlap
Sanctuary
3.19 km² overlap
Wedasitikanda
IUCN IbReserved Forest
2.81 km² overlap
Ganpanguwa
IUCN IbReserved Forest
2.74 km² overlap
Ravana Ella
IUCN IVSanctuary
2.49 km² overlap
Nikapitiya
IUCN IbReserved Forest
2.03 km² overlap
Godawaya
IUCN IVSanctuary
1.86 km² overlap
Kurukumiyankanda
IUCN IaConservation Forest
1.47 km² overlap
Galbokka
IUCN IbReserved Forest
0.06 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 485 distinct species · 218 684 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 32 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 Krindi Oya : 27 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 34 interactions GloBI sur 3 types (connectance 6.9%, filtre Serrano α=0.2). 5 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°
26,3°C
Annual rain
1 298mm
Moisture idx (CMI)
-0,12
Runoff
738mm/an
PET
1 453mm
AET
1 032mm
Mean slope
3,3°
Water table
133cm
Forest
55%
Crops
28%
Urban
8%
Protected
18%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)