HydroBASINS lev08 watershed · #7080050240
Bassin de San Marcos
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 : Acaxochitlán, Castillo de Teayo, Cazones de Herrera, Coatzintla, Coyutla +22
Sub-basin area
2 806,6km²
Upstream area
2 806,6km²
Discharge
84,78m³/s
Mean elev.
514m
Administrative coverage
27 dept-equivalent regions (GADM L2)
- 572.6 km²20.5% of basin
- Venustiano CarranzaPuebla · México298.6 km²10.7% of basin
- CoatzintlaVeracruz · México270.8 km²9.7% of basin
- 267.7 km²9.6% of basin
- Cazones de HerreraVeracruz · México205.4 km²7.3% of basin
- 167.4 km²6.0% of basin
- 129.1 km²4.6% of basin
- ZihuateutlaPuebla · México109.2 km²3.9% of basin
19 moreFull L2 list
- Papantla96.2 km² · 3.4%
- Jalpan91.7 km² · 3.3%
- Pahuatlán88.7 km² · 3.2%
- Tlacuilotepec79.1 km² · 2.8%
- Poza Rica de Hidalgo64.1 km² · 2.3%
- Honey60.7 km² · 2.2%
- Naupan59.5 km² · 2.1%
- Castillo de Teayo55.5 km² · 2.0%
- Huauchinango54.8 km² · 2.0%
- Francisco Z. Mena48.9 km² · 1.7%
- Tenango de Doria36.1 km² · 1.3%
- Tuxpan16.9 km² · 0.6%
- Espinal15.4 km² · 0.6%
- Juan Galindo4.2 km² · 0.1%
- Cuautepec de Hinojosa3.5 km² · 0.1%
- Metepec2.1 km² · 0.1%
- Tulancingo de Bravo0.3 km² · 0.0%
- Pantepec0.0 km² · 0.0%
- Tlaxco0.0 km² · 0.0%
3 intersecting protected areas
Natural Resources Protection Area
86.62 km² overlap
Sistema de Represas y Corredores biológicos de la Cuenca Hidrográfica del Río Necaxa
IUCN Not ReportedWetland of International Importance (Ramsar Site)
2.59 km² overlap
Carmen Serdan
IUCN IINational Park
1.11 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 226 distinct species · 25 866 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 48 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 San Marcos : 39 espèces reliées par 59 interactions GloBI sur 4 types (connectance 5.2%, filtre Serrano α=0.2). 9 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°
22,3°C
Annual rain
1 630mm
Moisture idx (CMI)
-0,01
Runoff
931mm/an
PET
1 555mm
AET
1 135mm
Mean slope
8,1°
Water table
341cm
Forest
21%
Crops
61%
Urban
7%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)