HydroBASINS lev08 watershed · #7080601580
Bassin de Rio Grande
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 4 administrative regions : Alamosa, Mineral, Rio Grande, Saguache
Sub-basin area
1 810,9km²
Upstream area
4 711,4km²
Discharge
24,57m³/s
Mean elev.
2 691m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de South Fork Rio Grande542 km²
- Bassin de Rio Grande140 km²
4 dept-equivalent regions (GADM L2)
- 1278.0 km²70.5% of basin
- 309.8 km²17.1% of basin
- 208.8 km²11.5% of basin
- Mineral15.3 km²0.8% of basin
14 intersecting protected areas
Spring Branch
IUCN IaResearch Natural Area
16.18 km² overlap
Alamosa
IUCN IVNational Wildlife Refuge
13.09 km² overlap
Greenie Mountain
IUCN VEasement
7.24 km² overlap
Us-Co-124-2
IUCN Not AssignedConservation Easement
3.35 km² overlap
Us-Co-158-2
IUCN Not AssignedConservation Easement
2.45 km² overlap
Us-Co-201-2
IUCN Not AssignedConservation Easement
2.43 km² overlap
Us-Co-124-3
IUCN Not AssignedConservation Easement
2.01 km² overlap
Reserve Program
1.77 km² overlap
Us-Co-93-1
IUCN Not AssignedConservation Easement
1.42 km² overlap
5 more protected areassorted by overlap area
Reserve Program
1.35 km² overlap
Us-Co-134-1
IUCN Not AssignedConservation Easement
1.24 km² overlap
Us-Co-158-1
IUCN Not AssignedConservation Easement
1.22 km² overlap
Us-Co-194-1
IUCN Not AssignedConservation Easement
0.86 km² overlap
Monte Vista
IUCN IVNational Wildlife Refuge
0.12 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 746 distinct species · 56 593 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 Rio Grande : 26 espèces reliées par 70 interactions GloBI sur 4 types (connectance 12.5%, 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°
3,3°C
Annual rain
416mm
Moisture idx (CMI)
-0,53
Runoff
104mm/an
PET
977mm
AET
335mm
Mean slope
6,4°
Water table
382cm
Forest
48%
Crops
15%
Urban
0%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)