HydroBASINS lev08 watershed · #7080577890

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 : Franklin, Jefferson, Saint Louis

2% lakePfafstetter: 74270830

Sub-basin area

348,6km²

Upstream area

7 202km²

Discharge

55,34m³/s

Mean elev.

189m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Meramec River491 km²

▲ Receives from 2 basins

Bassin de Bourbeuse River2136 km²
Bassin de Meramec River1191 km²

3 dept-equivalent regions (GADM L2)

Franklin
Missouri · United States
193.0 km²
55.3% of basin
Jefferson
Missouri · United States
103.7 km²
29.7% of basin
Saint Louis
Missouri · United States
52.1 km²
14.9% of basin

8 intersecting protected areas

Mobot Shaw
IUCN V
Nature Preserve
9.79 km² overlap
Robertsville
IUCN III
State Park
5.00 km² overlap
Young
IUCN V
Conservation Area
4.22 km² overlap
Labarque Creek
IUCN V
Conservation Area
3.20 km² overlap
Pacific Palisades
IUCN V
Conservation Area
3.03 km² overlap
Catawissa Ca
IUCN V
State Conservation Area
0.89 km² overlap
Chouteau Claim
IUCN V
Access
0.06 km² overlap
Allenton
IUCN V
Access
0.04 km² overlap

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

3 435 distinct species · 130 041 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 43 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).

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bassin de Meramec River : 30 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 106 interactions GloBI sur 4 types (connectance 11.7%, filtre Serrano α=0.2). 13 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

106

Connectance

0.117

Patrimoniales

Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydroclimate (BasinATLAS lev08)

Mean T°

12,5°C

Annual rain

996mm

Moisture idx (CMI)

-0,17

Runoff

223mm/an

PET

1 205mm

AET

841mm

Mean slope

3,8°

Water table

230cm

Forest

73%

Crops

15%

Urban

Protected

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)