HydroBASINS lev08 watershed · #2080439610
Bassin de l'Ailette
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 1 administrative regions : Aisne
Sub-basin area
543,8km²
Upstream area
544km²
Discharge
3,81m³/s
Mean elev.
106m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
1 dept-equivalent regions (GADM L2)
- 545.5 km²100.0% of basin
111 communes (GADM L5)Available for FRA, RWA
- Laon27.82 km²62% commune
- Trosly-Loire14.92 km²95% commune
- Vauxaillon14.27 km²100% commune
- Bouconville-Vauclair12.60 km²93% commune
- Leuilly-sous-Coucy11.91 km²95% commune
- Bruyères-et-Montbérault11.71 km²100% commune
- Chavignon11.66 km²98% commune
- Coucy-le-Château-Auffrique11.38 km²100% commune
- Crécy-au-Mont11.28 km²92% commune
- Chermizy-Ailles10.93 km²98% commune
- Saint-Paul-aux-Bois10.64 km²98% commune
- Cessières10.02 km²100% commune
- Suzy9.98 km²100% commune
- Anizy-le-Château9.77 km²100% commune
- Champs9.62 km²100% commune
- Pinon9.60 km²100% commune
- Guny8.92 km²99% commune
- Presles-et-Thierny8.86 km²100% commune
- Folembray8.67 km²100% commune
- Chevregny8.67 km²100% commune
- Vaudesson8.51 km²99% commune
- Pierremande7.80 km²100% commune
- Prémontré7.76 km²93% commune
- Sinceny7.71 km²59% commune
- Bucy-lès-Cerny7.67 km²91% commune
- Saint-Aubin7.60 km²97% commune
- Faucoucourt7.29 km²100% commune
- Selens7.24 km²99% commune
- Urcel7.07 km²100% commune
- Bassoles-Aulers6.89 km²100% commune
- Colligis-Crandelain6.68 km²96% commune
- Brancourt-en-Laonnois6.53 km²100% commune
- Monampteuil6.50 km²100% commune
- Coucy-la-Ville6.22 km²98% commune
- Landricourt6.10 km²100% commune
- Jumencourt6.03 km²100% commune
- Cerny-en-Laonnois5.91 km²80% commune
- Montchâlons5.79 km²84% commune
- Montbavin5.77 km²100% commune
- Pancy-Courtecon5.76 km²92% commune
- Merlieux-et-Fouquerolles5.72 km²100% commune
- Pont-Saint-Mard5.68 km²86% commune
- Bichancourt5.45 km²70% commune
- Barisis5.37 km²35% commune
- Allemant5.14 km²96% commune
- Ployart-et-Vaurseine5.03 km²100% commune
- Arrancy4.86 km²87% commune
- Pargny-Filain4.80 km²95% commune
- Vorges4.76 km²100% commune
- Wissignicourt4.71 km²100% commune
- Verneuil-sous-Coucy4.67 km²99% commune
- Martigny-Courpierre4.55 km²100% commune
- Molinchart4.45 km²100% commune
- Mons-en-Laonnois4.43 km²100% commune
- Laval-en-Laonnois4.43 km²100% commune
- Manicamp4.34 km²41% commune
- Neuville-sur-Ailette4.31 km²100% commune
- Clacy-et-Thierret4.18 km²100% commune
- Lizy4.04 km²100% commune
- Filain3.94 km²81% commune
- Quincy-Basse3.90 km²100% commune
- Vaucelles-et-Beffecourt3.74 km²100% commune
- Amigny-Rouy3.58 km²27% commune
- Lierval3.55 km²100% commune
- Chérêt3.40 km²98% commune
- Chivy-lès-Étouvelles3.39 km²100% commune
- Nouvion-le-Vineux3.38 km²100% commune
- Chamouille3.18 km²100% commune
- Athies-sous-Laon3.10 km²20% commune
- Trucy2.98 km²100% commune
- Monthenault2.87 km²100% commune
- Laniscourt2.83 km²100% commune
- Cerny-lès-Bucy2.75 km²84% commune
- Royaucourt-et-Chailvet2.73 km²100% commune
- Craonne2.67 km²29% commune
- Crépy2.56 km²9% commune
- Étouvelles2.47 km²100% commune
- Bièvres2.47 km²100% commune
- Orgeval2.45 km²100% commune
- Parfondru2.41 km²25% commune
- Fresnes2.21 km²33% commune
- Chaillevois2.19 km²100% commune
- Autreville2.08 km²57% commune
- Laffaux1.95 km²30% commune
- Bourguignon-sous-Montbavin1.95 km²100% commune
- Saint-Gobain1.46 km²5% commune
- Sainte-Croix1.39 km²48% commune
- Blérancourt1.17 km²11% commune
- Sancy-les-Cheminots0.76 km²16% commune
- Morsain0.70 km²5% commune
- Neuville-sur-Margival0.61 km²17% commune
- Terny-Sorny0.55 km²8% commune
- Braye-en-Laonnois0.53 km²7% commune
- Besny-et-Loizy0.50 km²5% commune
- Vézaponin0.28 km²9% commune
- Septvaux0.28 km²3% commune
- Juvigny0.24 km²2% commune
- Brie0.23 km²8% commune
- Aubigny-en-Laonnois0.18 km²4% commune
- Ostel0.15 km²2% commune
- Besmé0.15 km²6% commune
- Abbécourt0.14 km²2% commune
- Saint-Nicolas-aux-Bois0.12 km²2% commune
- Vassens0.11 km²1% commune
- Épagny0.11 km²1% commune
- Aizy-Jouy0.06 km²0% commune
- Corbeny0.05 km²0% commune
- Festieux0.03 km²1% commune
- Nanteuil-la-Fosse0.01 km²0% commune
- Marest-Dampcourt0.00 km²0% commune
- Paissy0.00 km²0% commune
19 intersecting protected areas
Forêts picardes : massif de Saint-Gobain
IUCN Not ReportedSpecial Protection Area (Birds Directive)
58.19 km² overlap
Tourbière et coteaux de Cessières Montbavin
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
6.78 km² overlap
Collines du Laonnois oriental
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
6.47 km² overlap
Moyenne vallée de l'Oise
IUCN Not ReportedSpecial Protection Area (Birds Directive)
5.62 km² overlap
Massif forestier de Saint-Gobain
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.51 km² overlap
Prairies alluviales de l'Oise de la Fère à Sempigny
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.59 km² overlap
Land acquired by a regional conservatory of natural areas
0.99 km² overlap
le marais de bonne fontaine
IUCN IVLand acquired by a regional conservatory of natural areas
0.35 km² overlap
le domaine de la solitude
IUCN IVLand acquired by a regional conservatory of natural areas
0.18 km² overlap
10 more protected areassorted by overlap area
Coteaux Du Chemin Des Dames
IUCN IVRegional Nature Reserve
0.17 km² overlap
Land acquired by a regional conservatory of natural areas
0.10 km² overlap
Land acquired by a regional conservatory of natural areas
0.09 km² overlap
Land acquired by a regional conservatory of natural areas
0.07 km² overlap
la pelouse manable
IUCN IVLand acquired by a regional conservatory of natural areas
0.06 km² overlap
le marais de comporte
IUCN IVLand acquired by a regional conservatory of natural areas
0.05 km² overlap
le mont violette
IUCN IVLand acquired by a regional conservatory of natural areas
0.05 km² overlap
Marais De Comporté
IUCN IVBiotope Protection Order
0.04 km² overlap
Land acquired by a regional conservatory of natural areas
0.02 km² overlap
le mont des veaux
IUCN IVLand acquired by a regional conservatory of natural areas
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
5 467 distinct species · 280 115 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 l'Ailette : 31 espèces reliées par 96 interactions GloBI sur 6 types (connectance 14.4%, filtre Serrano α=0.2). 6 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°
9,9°C
Annual rain
629mm
Moisture idx (CMI)
-0,20
Runoff
227mm/an
PET
784mm
AET
526mm
Mean slope
3,3°
Water table
228cm
Forest
18%
Crops
42%
Urban
3%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)