HydroBASINS lev08 watershed · #7080578980
Bassin de Grape 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 4 administrative regions : Custer, Fremont, Huerfano, Saguache
Sub-basin area
1 403,6km²
Upstream area
1 403,6km²
Discharge
1,25m³/s
Mean elev.
2 631m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- Custer1095.0 km²78.0% of basin
- Fremont298.1 km²21.2% of basin
- 7.1 km²0.5% of basin
- 4.2 km²0.3% of basin
7 intersecting protected areas
Sangre de Cristo
IUCN IbWilderness Area
124.44 km² overlap
Lower Grape Creek
IUCN IbWilderness Study Area
44.41 km² overlap
Upper Grape Creek
IUCN IbWilderness Study Area
38.37 km² overlap
Upper Kennicott Conservation Easement, Phase I / Wet Mountain Valley Ranchland Preservation Legacy
IUCN Not AssignedConservation Easement
12.25 km² overlap
Reserve Program
4.86 km² overlap
Great Sand Dunes
IUCN VNational Preserve
0.71 km² overlap
Deadman Creek
IUCN IaResearch Natural Area
0.05 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 702 distinct species · 52 295 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 28 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 Grape Creek : 21 espèces reliées par 59 interactions GloBI sur 4 types (connectance 15.6%, 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°
4,2°C
Annual rain
429mm
Moisture idx (CMI)
-0,54
Runoff
19mm/an
PET
994mm
AET
363mm
Mean slope
8,1°
Water table
898cm
Forest
69%
Crops
6%
Urban
0%
Protected
12%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)