HydroBASINS lev08 watershed · #2080443310
Bassin de la Retourne
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 2 administrative regions : Ardennes, Marne
Sub-basin area
333,2km²
Upstream area
333,2km²
Discharge
2,49m³/s
Mean elev.
115m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 332.3 km²99.4% of basin
- 1.9 km²0.6% of basin
50 communes (GADM L5)Available for FRA, RWA
- Juniville25.60 km²97% commune
- Tagnon23.67 km²100% commune
- Leffincourt16.72 km²94% commune
- Perthes16.24 km²69% commune
- Avançon15.68 km²73% commune
- Saint-Loup-en-Champagne14.98 km²95% commune
- Machault14.57 km²86% commune
- Neuflize13.79 km²100% commune
- Pauvres12.63 km²97% commune
- Roizy10.90 km²99% commune
- Houdilcourt10.25 km²92% commune
- Annelles10.01 km²78% commune
- Cauroy10.01 km²56% commune
- Le Châtelet-sur-Retourne9.70 km²100% commune
- Ville-sur-Retourne9.12 km²100% commune
- Bignicourt8.98 km²100% commune
- Sault-Saint-Remy8.92 km²93% commune
- Alincourt8.69 km²100% commune
- Ménil-Annelles8.47 km²95% commune
- Bergnicourt8.34 km²96% commune
- Poilcourt-Sydney7.71 km²96% commune
- Mont-Saint-Remy7.64 km²100% commune
- L'Écaille7.60 km²83% commune
- Brienne-sur-Aisne7.60 km²62% commune
- Dricourt7.33 km²100% commune
- La Neuville-en-Tourne-à-Fuy6.50 km²24% commune
- Semide6.12 km²16% commune
- Ménil-Lépinois4.89 km²27% commune
- Saint-Remy-le-Petit4.60 km²65% commune
- Saulces-Champenoises4.52 km²20% commune
- Coulommes-et-Marqueny2.46 km²21% commune
- Acy-Romance1.90 km²18% commune
- Quilly1.62 km²30% commune
- Mont-Laurent1.62 km²24% commune
- Boult-sur-Suippe0.93 km²5% commune
- Nanteuil-sur-Aisne0.83 km²10% commune
- Aussonce0.70 km²4% commune
- Auménancourt0.65 km²5% commune
- Tourcelles-Chaumont0.56 km²11% commune
- Saint-Étienne-sur-Suippe0.36 km²5% commune
- Seuil0.34 km²3% commune
- Aire0.25 km²4% commune
- Contreuve0.14 km²1% commune
- Vaux-Champagne0.05 km²0% commune
- Asfeld0.04 km²0% commune
- Vieux-lès-Asfeld0.02 km²0% commune
- Saint-Étienne-à-Arnes0.02 km²0% commune
- Sault-lès-Rethel0.00 km²0% commune
- Chardeny0.00 km²0% commune
- Bourcq0.00 km²0% commune
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 798 distinct species · 53 835 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 la Retourne : 29 espèces reliées par 114 interactions GloBI sur 6 types (connectance 14.6%, 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°
10,0°C
Annual rain
726mm
Moisture idx (CMI)
-0,11
Runoff
244mm/an
PET
814mm
AET
576mm
Mean slope
1,5°
Water table
111cm
Forest
0%
Crops
73%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)