HydroBASINS lev08 watershed · #7080853200
Bassin de Río Valle Nacional
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 : Ayotzintepec, Ixtlán de Juárez, San Felipe Usila, San José Chiltepec, San Juan Atepec +8
Sub-basin area
1 337,8km²
Upstream area
1 337,8km²
Discharge
59,98m³/s
Mean elev.
1 054m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
13 dept-equivalent regions (GADM L2)
- 526.8 km²39.5% of basin
- 176.7 km²13.2% of basin
- 155.2 km²11.6% of basin
- 117.4 km²8.8% of basin
- 114.3 km²8.6% of basin
- 78.0 km²5.9% of basin
- 57.3 km²4.3% of basin
- 56.3 km²4.2% of basin
5 moreFull L2 list
- San José Chiltepec40.2 km² · 3.0%
- San Juan Bautista Tuxtepec8.6 km² · 0.6%
- San Felipe Usila2.5 km² · 0.2%
- Santa María Jaltianguis0.1 km² · 0.0%
- San Juan Quiotepec0.1 km² · 0.0%
13 intersecting protected areas
San Mateo Yetla
IUCN VIVoluntary Conservation Area
57.39 km² overlap
Voluntary Conservation Area
39.39 km² overlap
Voluntary Conservation Area
34.61 km² overlap
Voluntary Conservation Area
19.45 km² overlap
Voluntary Conservation Area
17.31 km² overlap
Reserva Ejidal Vega del Sol
IUCN VIVoluntary Conservation Area
12.78 km² overlap
Voluntary Conservation Area
7.99 km² overlap
Voluntary Conservation Area
6.07 km² overlap
Voluntary Conservation Area
4.99 km² overlap
4 more protected areassorted by overlap area
Voluntary Conservation Area
4.81 km² overlap
Voluntary Conservation Area
0.50 km² overlap
La Tierra del Faisán
IUCN VIVoluntary Conservation Area
0.28 km² overlap
Voluntary Conservation Area
0.18 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
5 506 distinct species · 133 541 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 24 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 Valle Nacional : 16 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 23 interactions GloBI sur 2 types (connectance 8.3%, filtre Serrano α=0.2). 8 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°
20,4°C
Annual rain
3 016mm
Moisture idx (CMI)
0,46
Runoff
1 391mm/an
PET
1 510mm
AET
1 299mm
Mean slope
18,7°
Water table
603cm
Forest
70%
Crops
25%
Urban
1%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)