HydroBASINS lev08 watershed · #7080566090
Bassin de Dardenne 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 3 administrative regions : Calhoun, Saint Charles, Warren
Sub-basin area
540,6km²
Upstream area
371 598,5km²
Discharge
2 778,96m³/s
Mean elev.
164m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
3 dept-equivalent regions (GADM L2)
- Saint Charles480.2 km²88.8% of basin
- Calhoun54.2 km²10.0% of basin
- Warren6.6 km²1.2% of basin
30 intersecting protected areas
Conservation Area
27.62 km² overlap
Us-Mo-42-5
IUCN Not AssignedConservation Easement
5.73 km² overlap
Us-Mo-42-18
IUCN Not AssignedConservation Easement
3.20 km² overlap
Us-Mo-42-10
IUCN Not AssignedConservation Easement
3.15 km² overlap
Us-Mo-14-1
IUCN Not AssignedConservation Easement
3.13 km² overlap
Us-Mo-42-4
IUCN Not AssignedConservation Easement
2.31 km² overlap
Weldon Spring
IUCN VConservation Area
1.82 km² overlap
Us-Mo-68-28
IUCN Not AssignedConservation Easement
1.72 km² overlap
Us-Mo-68-26
IUCN Not AssignedConservation Easement
1.56 km² overlap
21 more protected areassorted by overlap area
Two Rivers
IUCN VNational Wildlife Refuge
1.38 km² overlap
Agricultural Conservation Easement Program - Wetland Reserve Easements (ACEP-WRE), St. Charles, MO
IUCN Not AssignedConservation Easement
0.80 km² overlap
Conservation Easement
0.80 km² overlap
Us-Mo-42-14
IUCN Not AssignedConservation Easement
0.71 km² overlap
Reserve Program
0.45 km² overlap
Us-Mo-42-9
IUCN Not AssignedConservation Easement
0.41 km² overlap
Conservation Area
0.35 km² overlap
River Retreat
IUCN VNatural Area
0.31 km² overlap
US-MO-42-24 Wetlands
IUCN Not AssignedReserve Program
0.27 km² overlap
Us-Mo-42-20
IUCN Not AssignedConservation Easement
0.26 km² overlap
Reserve Program
0.24 km² overlap
Us-Mo-42-3
IUCN Not AssignedConservation Easement
0.22 km² overlap
Us-Mo-42-8
IUCN Not AssignedConservation Easement
0.21 km² overlap
Us-Mo-42-15
IUCN Not AssignedConservation Easement
0.17 km² overlap
Us-Mo-42-19
IUCN Not AssignedConservation Easement
0.16 km² overlap
Us-Mo-42-21
IUCN Not AssignedConservation Easement
0.15 km² overlap
US-MO-42-26 Mitigation or Eco-Asset Project
IUCN Not AssignedMitigation
0.10 km² overlap
Us-Mo-42-22
IUCN Not AssignedConservation Easement
0.09 km² overlap
Us-Mo-42-23
IUCN Not AssignedConservation Easement
0.08 km² overlap
Two Branch Peace Prairie
IUCN VConservation Area
0.04 km² overlap
Us-Mo-42-16
IUCN Not AssignedConservation Easement
0.04 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 497 distinct species · 325 634 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 37 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 Dardenne Creek : 28 espèces reliées par 77 interactions GloBI sur 4 types (connectance 11.6%, filtre Serrano α=0.2). 9 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°
12,4°C
Annual rain
962mm
Moisture idx (CMI)
-0,18
Runoff
226mm/an
PET
1 167mm
AET
812mm
Mean slope
1,2°
Water table
110cm
Forest
15%
Crops
39%
Urban
35%
Protected
7%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)