HydroBASINS lev08 watershed · #7080534030
Bassin de South Boulder Creek
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 9 administrative regions : Adams, Boulder, Broomfield, Clear Creek, Gilpin +4
Sub-basin area
2 549,3km²
Upstream area
2 549,7km²
Discharge
5,34m³/s
Mean elev.
2 208m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
9 dept-equivalent regions (GADM L2)
- 1869.4 km²73.3% of basin
- 365.6 km²14.3% of basin
- 176.4 km²6.9% of basin
- Jefferson68.3 km²2.7% of basin
- 36.8 km²1.4% of basin
- 26.9 km²1.1% of basin
- Grand7.9 km²0.3% of basin
- Adams0.5 km²0.0% of basin
1 moreFull L2 list
- Clear Creek0.2 km² · 0.0%
30 intersecting protected areas
Indian Peaks
IUCN IbWilderness Area
136.62 km² overlap
Rocky Mountain
IUCN IINational Park
122.60 km² overlap
Rocky Mountain National Park
IUCN IbWilderness Area
112.86 km² overlap
James Peak
IUCN IbWilderness
39.10 km² overlap
North St. Vrain
IUCN IaResearch Natural Area
21.48 km² overlap
Caribou Ranch Open Space -
IUCN Not AssignedConservation Easement
8.69 km² overlap
Us Patent - Bear Peak
IUCN VLocal Conservation Area
7.00 km² overlap
Rocky Flats
IUCN IVNational Wildlife Refuge
6.25 km² overlap
Easement
6.15 km² overlap
21 more protected areassorted by overlap area
Heil Ranch
IUCN Not AssignedConservation Easement
5.13 km² overlap
Gross
IUCN VNon-Governmental Lands
4.76 km² overlap
Superior Associates
IUCN VLocal Conservation Area
3.86 km² overlap
Flatirons Vista
IUCN VLocal Conservation Area
3.68 km² overlap
Open Space
2.96 km² overlap
Dawson Property
IUCN Not AssignedConservation Easement
2.67 km² overlap
Beech - East
IUCN VLocal Conservation Area
2.63 km² overlap
Imel Conservation Easement - Nimbus E
IUCN Not AssignedConservation Easement
2.58 km² overlap
Conservation
IUCN Not AssignedEasement
2.53 km² overlap
Parker
IUCN Not AssignedConservation Easement
2.30 km² overlap
Jewel Mountain Land Co.
IUCN VLocal Conservation Area
2.25 km² overlap
Local Conservation Area
2.21 km² overlap
Varra, East
IUCN VLocal Conservation Area
2.20 km² overlap
Lindsay - West
IUCN VLocal Conservation Area
2.15 km² overlap
Local Conservation Area
2.10 km² overlap
Axelson, West
IUCN VLocal Conservation Area
2.07 km² overlap
Rudd - West
IUCN VLocal Conservation Area
2.03 km² overlap
Local Conservation Area
1.92 km² overlap
Non-Governmental Lands
1.86 km² overlap
Caribou Ranch | Boulder County Parks and Open Space
IUCN Not AssignedConservation Easement
1.86 km² overlap
Dunn I
IUCN VLocal Conservation Area
1.83 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
10 787 distinct species · 3 928 459 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 26 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 South Boulder Creek : 19 espèces reliées par 68 interactions GloBI sur 4 types (connectance 20.9%, 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°
5,8°C
Annual rain
483mm
Moisture idx (CMI)
-0,48
Runoff
71mm/an
PET
1 008mm
AET
400mm
Mean slope
8,7°
Water table
569cm
Forest
66%
Crops
19%
Urban
10%
Protected
15%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)