HydroBASINS lev08 watershed · #2080592220
Bassin de Río Oja o Glera
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 : Burgos, La Rioja
Sub-basin area
1 301,8km²
Upstream area
1 302km²
Discharge
18,07m³/s
Mean elev.
919m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 687.3 km²52.7% of basin
- 616.7 km²47.3% of basin
13 intersecting protected areas
Sierras de Demanda, Urbión, Cebollera y Cameros
IUCN Not ReportedSpecial Protection Area (Birds Directive)
266.13 km² overlap
Natura 2000
266.13 km² overlap
Sierras de Demanda, Urbión, Cebollera y Cameros
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
266.13 km² overlap
Sierra de la Demanda - ZEPA
IUCN Not ReportedSpecial Protection Area (Birds Directive)
126.65 km² overlap
Sierra de la Demanda
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
126.23 km² overlap
Obarenes-Sierra de Cantabria
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
13.31 km² overlap
Obarenes-Sierra de Cantabria
IUCN Not ReportedSpecial Protection Area (Birds Directive)
13.31 km² overlap
Natura 2000
13.31 km² overlap
Riberas del Río Tirón y afluentes
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
4.57 km² overlap
4 more protected areassorted by overlap area
Alto Najerilla
IUCN VNatural Park
1.27 km² overlap
Montes de Miranda de Ebro y Ameyugo - ZEPA
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.56 km² overlap
Montes de Miranda de Ebro y Ameyugo
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.56 km² overlap
Riberas del Río Oca y afluentes
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.02 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 387 distinct species · 81 185 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 33 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 Oja o Glera : 23 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 85 interactions GloBI sur 5 types (connectance 15.2%, filtre Serrano α=0.2). 11 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°
10,3°C
Annual rain
681mm
Moisture idx (CMI)
-0,25
Runoff
435mm/an
PET
912mm
AET
570mm
Mean slope
9,2°
Water table
336cm
Forest
43%
Crops
42%
Urban
1%
Protected
21%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)