HydroBASINS lev08 watershed · #2080593310
Bassin de Río Zamaca
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 2 administrative regions : La Rioja, Álava
Sub-basin area
264km²
Upstream area
8 876km²
Discharge
149,6m³/s
Mean elev.
568m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Río Oja o Glera1302 km²
- Bassin de Jugalez ibaia155 km²
2 dept-equivalent regions (GADM L2)
- 215.3 km²81.4% of basin
- 49.1 km²18.6% of basin
10 intersecting protected areas
Obarenes-Sierra de Cantabria
IUCN Not ReportedSpecial Protection Area (Birds Directive)
16.13 km² overlap
Obarenes-Sierra de Cantabria
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
16.13 km² overlap
Natura 2000
16.12 km² overlap
Arabako hegoaldeko mendilerroak / Sierras meridionales de Álava
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
10.74 km² overlap
Arabako hegoaldeko mendilerroak / Sierras meridionales de Álava
IUCN Not ReportedSpecial Protection Area (Birds Directive)
10.74 km² overlap
Sotos y Riberas del Ebro
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.47 km² overlap
Sotos y Riberas del Ebro
IUCN Not ReportedSpecial Protection Area (Birds Directive)
3.47 km² overlap
Sotos y Riberas del Ebro
IUCN VNatura 2000
3.47 km² overlap
Ebro ibaia / Río Ebro
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.23 km² overlap
1 more protected areassorted by overlap area
La Laguna de Hervias
IUCN IVNatural Area (singular)
0.59 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 899 distinct species · 17 322 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 Río Zamaca : 24 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 50 interactions GloBI sur 5 types (connectance 10.1%, 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°
12,1°C
Annual rain
639mm
Moisture idx (CMI)
-0,33
Runoff
468mm/an
PET
951mm
AET
540mm
Mean slope
4,7°
Water table
215cm
Forest
9%
Crops
71%
Urban
1%
Protected
6%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)