HydroBASINS lev08 watershed · #5080024440
Bassin de Carac-an River
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 27 administrative regions : Alegria, Bacuag, Bayabas, Cabadbaran City, Cantilan +22
Sub-basin area
2 532,9km²
Upstream area
2 532,9km²
Discharge
18,68m³/s
Mean elev.
258m
Administrative coverage
27 dept-equivalent regions (GADM L2)
- 318.7 km²12.6% of basin
- 311.4 km²12.3% of basin
- 206.2 km²8.2% of basin
- 181.8 km²7.2% of basin
- 161.9 km²6.4% of basin
- 152.7 km²6.1% of basin
- 118.8 km²4.7% of basin
- 108.0 km²4.3% of basin
19 moreFull L2 list
- Carmen93.7 km² · 3.7%
- Malimono89.7 km² · 3.6%
- Cortes82.3 km² · 3.3%
- Placer81.9 km² · 3.2%
- Tagana-An81.8 km² · 3.2%
- Sison65.3 km² · 2.6%
- Bacuag60.1 km² · 2.4%
- Jabonga49.5 km² · 2.0%
- Santiago45.8 km² · 1.8%
- San Francisco45.6 km² · 1.8%
- Tubay29.4 km² · 1.2%
- Kitcharao24.2 km² · 1.0%
- Tago17.8 km² · 0.7%
- Alegria16.4 km² · 0.6%
- Sibagat9.4 km² · 0.4%
- Cabadbaran City8.5 km² · 0.3%
- Mainit6.7 km² · 0.3%
- Tubod0.6 km² · 0.0%
- Bayabas0.0 km² · 0.0%
6 intersecting protected areas
Alamio, Buayan, Carac-an, Panikian River and Sipangpang Falls Watershed Forest Reserve
IUCN Not AssignedWatershed Forest Reserve
427.71 km² overlap
Hinatuan Passage Development Alliance (HIPADA)
IUCN Not ApplicableMarine Protected Area Network
76.41 km² overlap
Mangrove Swamp Forest Reserve
13.06 km² overlap
Surigao Watershed Forest Reserve
IUCN Not AssignedWatershed Forest Reserve
8.73 km² overlap
Island of Lamagon (Lamayan), Cepaya and Cobeton Wilderness Area
IUCN Not AssignedWilderness Area
5.85 km² overlap
Cabadbaran Watershed
IUCN Not AssignedWatershed
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
700 distinct species · 1 740 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 33 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 Carac-an River : 29 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 27 interactions GloBI sur 4 types (connectance 5.1%, 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°
25,6°C
Annual rain
4 141mm
Moisture idx (CMI)
0,64
Runoff
2 743mm/an
PET
1 463mm
AET
1 453mm
Mean slope
10,8°
Water table
338cm
Forest
58%
Crops
24%
Urban
8%
Protected
6%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)