HydroBASINS lev08 watershed · #7080566070
Bassin de Little 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 2 administrative regions : Grand, Mesa
Sub-basin area
681,7km²
Upstream area
48 107,9km²
Discharge
216,15m³/s
Mean elev.
2 023m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Bitter Creek724 km²
- Bassin de Westwater Creek695 km²
2 dept-equivalent regions (GADM L2)
- 547.3 km²80.2% of basin
- GrandUtah · United States135.0 km²19.8% of basin
6 intersecting protected areas
Westwater Canyon
IUCN IbWilderness Study Area
103.41 km² overlap
Mcinnis Canyons
IUCN VNational Conservation Area
92.70 km² overlap
Black Ridge Canyons
IUCN IbWilderness Area
58.96 km² overlap
Data not available
IUCN Not AssignedConservation Easement
6.82 km² overlap
Westwater Canyon
IUCN IbWilderness Study Area
4.53 km² overlap
Pinon Mesa - Glade Point SHA
IUCN Not AssignedConservation Easement
2.99 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
949 distinct species · 20 461 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 45 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 Little Dolores River : 32 espèces reliées par 107 interactions GloBI sur 5 types (connectance 10.8%, filtre Serrano α=0.2). 13 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
367mm
Moisture idx (CMI)
-0,66
Runoff
69mm/an
PET
1 121mm
AET
315mm
Mean slope
7,6°
Water table
853cm
Forest
50%
Crops
3%
Urban
0%
Protected
19%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)