HydroBASINS lev08 watershed · #7080579820
Bassin de Meramec 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 3 administrative regions : Jefferson, Monroe, Saint Louis
Sub-basin area
490,6km²
Upstream area
10 212,2km²
Discharge
77,36m³/s
Mean elev.
174m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Big River2519 km²
- Bassin de Meramec River349 km²
3 dept-equivalent regions (GADM L2)
- Saint Louis346.6 km²70.6% of basin
- Jefferson144.3 km²29.4% of basin
- Monroe0.0 km²0.0% of basin
20 intersecting protected areas
Rockwoods
IUCN VReservation
7.78 km² overlap
Castlewood
IUCN IIIState Park
7.21 km² overlap
Forest 44 Ca
IUCN VState Conservation Area
4.16 km² overlap
Route 66
IUCN IIIState Park
1.63 km² overlap
Russell E. Emmenegger
IUCN VNature Park
0.57 km² overlap
Teszars Woods
IUCN VConservation Area
0.46 km² overlap
Klamberg Woods Ca
IUCN IIIState Park
0.34 km² overlap
Klamberg (Roger) Woods
IUCN VConservation Area
0.27 km² overlap
Open Space
0.24 km² overlap
11 more protected areassorted by overlap area
Conservation Area
0.17 km² overlap
Lower Meramec
IUCN VOpen Space
0.12 km² overlap
Flamm City
IUCN VAccess
0.08 km² overlap
Possum Woods
IUCN VConservation Area
0.07 km² overlap
Mprd
IUCN VOpen Space
0.07 km² overlap
Phantom Forest
IUCN VConservation Area
0.06 km² overlap
Phantom Forest Ca
IUCN VForest
0.05 km² overlap
Bittersweet Woods
IUCN VConservation Area
0.04 km² overlap
Goodson (Jean And Joan)
IUCN VConservation Area
0.04 km² overlap
Rockwoods Towersite
IUCN VState Conservation Area or Park
0.04 km² overlap
Goodson (jean And Joan)
IUCN VConservation Area
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 886 distinct species · 582 562 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 38 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 Meramec River : 27 espèces reliées par 78 interactions GloBI sur 4 types (connectance 11.1%, filtre Serrano α=0.2). 11 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°
12,6°C
Annual rain
991mm
Moisture idx (CMI)
-0,16
Runoff
230mm/an
PET
1 179mm
AET
837mm
Mean slope
3,3°
Water table
218cm
Forest
28%
Crops
9%
Urban
59%
Protected
4%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)