HydroBASINS lev08 watershed · #7080573060
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 4 administrative regions : Grand, Mesa, Montrose, San Juan
Sub-basin area
1 098,6km²
Upstream area
10 743,7km²
Discharge
39,24m³/s
Mean elev.
2 133m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Dolores River740 km²
- Bassin de Big Atkinson Creek170 km²
4 dept-equivalent regions (GADM L2)
- 656.1 km²59.7% of basin
- 293.2 km²26.7% of basin
- GrandUtah · United States75.1 km²6.8% of basin
- San JuanUtah · United States75.0 km²6.8% of basin
3 intersecting protected areas
Sewemup Mesa
IUCN IbWilderness Study Area
79.49 km² overlap
La Sal Mountains
IUCN VEasement
12.54 km² overlap
Mount Peale
IUCN IaResearch Natural Area
3.39 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 381 distinct species · 12 084 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 : 29 espèces reliées par 113 interactions GloBI sur 4 types (connectance 11.9%, filtre Serrano α=0.2). 15 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°
7,7°C
Annual rain
407mm
Moisture idx (CMI)
-0,61
Runoff
73mm/an
PET
1 106mm
AET
347mm
Mean slope
11,2°
Water table
848cm
Forest
56%
Crops
5%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)