HydroBASINS lev08 watershed · #2080593430
Bassin de Río Najerilla
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 3 administrative regions : Burgos, La Rioja, Soria
Sub-basin area
1 108,6km²
Upstream area
1 108,8km²
Discharge
13,44m³/s
Mean elev.
1 090m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- 1041.7 km²93.8% of basin
- 65.5 km²5.9% of basin
- 3.2 km²0.3% of basin
14 intersecting protected areas
Sierras de Demanda, Urbión, Cebollera y Cameros
IUCN Not ReportedSpecial Protection Area (Birds Directive)
685.61 km² overlap
Sierras de Demanda, Urbión, Cebollera y Cameros
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
685.61 km² overlap
Natura 2000
685.61 km² overlap
Alto Najerilla
IUCN VNatural Park
427.12 km² overlap
Sierra de la Demanda
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
64.39 km² overlap
Sierra de la Demanda - ZEPA
IUCN Not ReportedSpecial Protection Area (Birds Directive)
64.18 km² overlap
Lagunas Glaciares de Neila
IUCN IVNatural Park
62.14 km² overlap
Sierras de Urbión y Cebollera
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.38 km² overlap
Sierra de Urbión
IUCN Not ReportedSpecial Protection Area (Birds Directive)
3.38 km² overlap
5 more protected areassorted by overlap area
Natural Park
1.83 km² overlap
Humedales de la Sierra de Urbión
IUCN Not ReportedWetland of International Importance (Ramsar Site)
0.78 km² overlap
Sotos y Riberas del Ebro
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.56 km² overlap
Sotos y Riberas del Ebro
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.56 km² overlap
Sotos y Riberas del Ebro
IUCN VNatura 2000
0.56 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 491 distinct species · 50 228 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 30 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 Najerilla : 18 espèces reliées par 76 interactions GloBI sur 6 types (connectance 17.5%, filtre Serrano α=0.2). 12 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°
9,6°C
Annual rain
674mm
Moisture idx (CMI)
-0,26
Runoff
377mm/an
PET
925mm
AET
560mm
Mean slope
14,9°
Water table
514cm
Forest
69%
Crops
20%
Urban
1%
Protected
61%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)