HydroBASINS lev08 watershed · #6080454660
Bassin de Río Marañón
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 12 administrative regions : Ambo, Bolognesi, Cajatambo, Daniel Alcides Carrión, Dos de Mayo +7
Sub-basin area
6 420,6km²
Upstream area
6 421km²
Discharge
174,59m³/s
Mean elev.
4 030m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
12 dept-equivalent regions (GADM L2)
- 2068.1 km²32.3% of basin
- 1512.5 km²23.7% of basin
- 815.2 km²12.7% of basin
- 767.4 km²12.0% of basin
- 724.7 km²11.3% of basin
- 287.9 km²4.5% of basin
- 117.0 km²1.8% of basin
- 90.4 km²1.4% of basin
4 moreFull L2 list
- Ambo4.9 km² · 0.1%
- Cajatambo4.6 km² · 0.1%
- Daniel Alcides Carrión1.3 km² · 0.0%
- Oyon0.3 km² · 0.0%
6 intersecting protected areas
Cordillera Huayhuash
IUCN Not AssignedRestricted Zone
206.65 km² overlap
Jirishanca
IUCN VIPrivate Conservation Area
119.44 km² overlap
Huascarán National Park
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
3.98 km² overlap
Huascarán
IUCN IINational Park
3.97 km² overlap
Huayllapa
IUCN VIPrivate Conservation Area
0.73 km² overlap
Pacllón
IUCN VIPrivate Conservation Area
0.32 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
934 distinct species · 5 177 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 13 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 Río Marañón : 8 espèces reliées par 14 interactions GloBI sur 2 types (connectance 13.3%, filtre Serrano α=0.2). 7 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°
7,0°C
Annual rain
836mm
Moisture idx (CMI)
-0,25
Runoff
906mm/an
PET
1 134mm
AET
703mm
Mean slope
18,0°
Water table
696cm
Forest
15%
Crops
13%
Urban
0%
Protected
5%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)