HydroBASINS lev08 watershed · #7080579650
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 4 administrative regions : Crawford, Franklin, Jefferson, Washington
Sub-basin area
1 190,6km²
Upstream area
4 716,8km²
Discharge
34,55m³/s
Mean elev.
248m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Courtois Creek1261 km²
- Bassin de Meramec River396 km²
4 dept-equivalent regions (GADM L2)
- Washington491.5 km²41.3% of basin
- Franklin450.7 km²37.8% of basin
- Crawford248.4 km²20.9% of basin
- Jefferson0.8 km²0.1% of basin
21 intersecting protected areas
Pea Ridge
IUCN VConservation Area
27.50 km² overlap
Meramec
IUCN VState Park
21.34 km² overlap
Meramec
IUCN VConservation Area
15.94 km² overlap
Little Indian Creek
IUCN VConservation Area
15.74 km² overlap
Huzzah
IUCN VConservation Area
9.48 km² overlap
Onondaga Cave
IUCN IIIState Park
3.96 km² overlap
Meramec Mosaic
IUCN VNatural Area
3.33 km² overlap
Blue Springs Creek
IUCN VConservation Area
2.46 km² overlap
Meramec Upland Forest
IUCN VNatural Area
1.78 km² overlap
12 more protected areassorted by overlap area
River'Round
IUCN VConservation Area
1.27 km² overlap
Vilander Bluff
IUCN VNatural Area
0.84 km² overlap
Conservation Area
0.69 km² overlap
Mossy Spring Cave
IUCN VNatural Area
0.68 km² overlap
Green Meadow
IUCN VAccess
0.30 km² overlap
Redhorse
IUCN VAccess
0.19 km² overlap
Onyx Cave
IUCN VConservation Area
0.15 km² overlap
Sand Ford
IUCN VAccess
0.14 km² overlap
Sappington Bridge
IUCN VAccess
0.04 km² overlap
Campbell Bridge
IUCN VAccess
0.04 km² overlap
National Wildlife Refuge
0.03 km² overlap
Scotia Hollow Cave
IUCN VConservation Area
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 021 distinct species · 35 307 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 41 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 : 30 espèces reliées par 88 interactions GloBI sur 4 types (connectance 10.2%, filtre Serrano α=0.2). 12 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
1 031mm
Moisture idx (CMI)
-0,16
Runoff
234mm/an
PET
1 226mm
AET
870mm
Mean slope
3,8°
Water table
250cm
Forest
94%
Crops
12%
Urban
1%
Protected
9%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)