HydroBASINS lev08 watershed · #7080583860
Bassin de Dolores River
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 : Montrose, San Juan, San Miguel
Sub-basin area
816,6km²
Upstream area
4 394,7km²
Discharge
18,54m³/s
Mean elev.
1 975m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Dolores River2673 km²
- Bassin de Disappointment Creek906 km²
3 dept-equivalent regions (GADM L2)
- San Miguel536.1 km²65.6% of basin
- 156.3 km²19.1% of basin
- San JuanUtah · United States124.7 km²15.3% of basin
1 intersecting protected areas
Dolores River Canyon
IUCN IbWilderness Study Area
48.77 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
543 distinct species · 4 329 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 42 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 Dolores River : 26 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 130 interactions GloBI sur 4 types (connectance 13.7%, filtre Serrano α=0.2). 18 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°
8,3°C
Annual rain
361mm
Moisture idx (CMI)
-0,69
Runoff
98mm/an
PET
1 178mm
AET
309mm
Mean slope
7,9°
Water table
806cm
Forest
38%
Crops
1%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)