HydroBASINS lev08 watershed · #7080531900
Bassin de Big Thompson 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 : Boulder, Grand, Larimer, Weld
Sub-basin area
2 115,2km²
Upstream area
2 115,2km²
Discharge
3,46m³/s
Mean elev.
2 247m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- 1839.6 km²86.9% of basin
- 224.3 km²10.6% of basin
- 50.2 km²2.4% of basin
- Grand3.5 km²0.2% of basin
30 intersecting protected areas
Rocky Mountain
IUCN IINational Park
419.03 km² overlap
Rocky Mountain National Park
IUCN IbWilderness Area
381.59 km² overlap
Comanche Peak
IUCN IbWilderness
28.64 km² overlap
West Creek
IUCN IaResearch Natural Area
12.55 km² overlap
Bobcat Ridge
IUCN VCity Natural Area
10.53 km² overlap
Chimney Hollow
IUCN VOpen Space
7.48 km² overlap
Sheep Creek
IUCN IaResearch Natural Area
4.96 km² overlap
Land Trust Land
IUCN VLocal Land Trust Lands
2.70 km² overlap
Reservation
2.58 km² overlap
21 more protected areassorted by overlap area
Pennock Creek
IUCN IaResearch Natural Area
2.11 km² overlap
Rim Rock
IUCN Not AssignedConservation Easement
1.26 km² overlap
Lon Hagler
IUCN Not AssignedState Wildlife Area
0.57 km² overlap
Us-Co-249-2
IUCN Not AssignedConservation Easement
0.51 km² overlap
Vogt-Cooley
IUCN Not AssignedWildlife Sanctuary
0.33 km² overlap
Kauffman
IUCN VLocal Conservation Area
0.29 km² overlap
Stinn
IUCN VLocal Conservation Area
0.17 km² overlap
Thunder Mountain SHA
IUCN Not AssignedConservation Easement
0.17 km² overlap
Estes Valley Land Trust
IUCN VConservation Easement
0.16 km² overlap
Nordic
IUCN Not AssignedEasement
0.15 km² overlap
Jayhawker Ponds
IUCN VPond
0.12 km² overlap
Morey
IUCN VCity Natural Area
0.11 km² overlap
Lily Lake - Roessler Property
IUCN Not AssignedLake
0.08 km² overlap
Knoll-Willows
IUCN VOpen Space
0.08 km² overlap
Simpson Ponds
IUCN Not AssignedState Wildlife Area
0.05 km² overlap
Rfjy
IUCN VCity Natural Area
0.05 km² overlap
Gateway
IUCN Not AssignedEasement
0.04 km² overlap
Williams
IUCN VEnvironmental System
0.03 km² overlap
Stanley Historic District
IUCN Not AssignedEasement
0.03 km² overlap
Dehmel
IUCN Not AssignedEasement
0.02 km² overlap
Namaqua - Spight
IUCN VCity Natural Area
0.02 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
6 174 distinct species · 1 160 357 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 35 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 Big Thompson River : 28 espèces reliées par 79 interactions GloBI sur 4 types (connectance 13.3%, filtre Serrano α=0.2). 7 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°
5,4°C
Annual rain
460mm
Moisture idx (CMI)
-0,49
Runoff
61mm/an
PET
984mm
AET
383mm
Mean slope
10,9°
Water table
636cm
Forest
70%
Crops
14%
Urban
3%
Protected
23%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)