HydroBASINS lev08 watershed · #2080456490
Bassin du Petit Morin
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 : Aisne, Marne, Seine-et-Marne
Sub-basin area
628,6km²
Upstream area
628,6km²
Discharge
4,21m³/s
Mean elev.
172m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- 401.9 km²63.7% of basin
- 162.2 km²25.7% of basin
- 66.5 km²10.5% of basin
79 communes (GADM L5)Available for FRA, RWA
- Montmirail40.61 km²83% commune
- Val-des-Marais35.87 km²92% commune
- Verdelot23.60 km²91% commune
- Vert-Toulon22.76 km²100% commune
- Bannes20.33 km²85% commune
- Baye17.59 km²96% commune
- Broussy-le-Grand16.78 km²79% commune
- Saint-Cyr-sur-Morin16.65 km²89% commune
- Boissy-le-Repos15.54 km²100% commune
- Jouarre15.37 km²36% commune
- Viels-Maisons14.43 km²67% commune
- Le Thoult-Trosnay14.19 km²95% commune
- Sablonnières13.90 km²97% commune
- Villevenard13.49 km²100% commune
- Vendières12.90 km²100% commune
- Congy12.73 km²71% commune
- Marchais-en-Brie12.50 km²100% commune
- Bassevelle12.12 km²69% commune
- Broussy-le-Petit11.43 km²99% commune
- L'Épine-aux-Bois11.22 km²89% commune
- Rieux11.17 km²97% commune
- Coizard-Joches10.92 km²100% commune
- Bergères-sous-Montmirail10.61 km²100% commune
- Bellot10.29 km²63% commune
- Mécringes9.68 km²90% commune
- Villeneuve-sur-Bellot9.16 km²100% commune
- Montdauphin8.87 km²92% commune
- Corfélix8.47 km²100% commune
- Vauchamps8.40 km²67% commune
- Loisy-en-Brie8.25 km²55% commune
- Pierre-Morains8.07 km²59% commune
- Étoges7.63 km²52% commune
- La Trétoire7.33 km²77% commune
- Oyes7.15 km²100% commune
- Fontenelle-en-Brie7.12 km²83% commune
- Bannay7.08 km²100% commune
- Mondement-Montgivroux7.06 km²93% commune
- Reuves6.88 km²100% commune
- Soizy-aux-Bois6.87 km²96% commune
- Talus-Saint-Prix6.43 km²100% commune
- Montolivet6.41 km²40% commune
- Fèrebrianges6.39 km²92% commune
- Bussières6.31 km²73% commune
- Étréchy5.93 km²90% commune
- La Celle-sous-Montmirail5.74 km²100% commune
- Orly-sur-Morin5.70 km²100% commune
- Soulières5.65 km²89% commune
- Allemant5.63 km²35% commune
- Courjeonnet5.23 km²100% commune
- Hondevilliers5.13 km²100% commune
- Boitron4.90 km²100% commune
- Montenils4.57 km²86% commune
- Givry-lès-Loisy4.08 km²82% commune
- Saint-Ouen-sur-Morin4.06 km²100% commune
- Beaunay3.16 km²100% commune
- La Villeneuve-lès-Charleville2.99 km²26% commune
- Vertus2.98 km²8% commune
- Charleville2.63 km²15% commune
- La Ferté-sous-Jouarre2.21 km²22% commune
- Le Gault-Soigny1.97 km²8% commune
- Doue1.94 km²10% commune
- Nogent-l'Artaud1.88 km²8% commune
- Champaubert1.65 km²13% commune
- Saint-Barthélemy1.59 km²11% commune
- Broyes1.57 km²10% commune
- Fromentières1.54 km²17% commune
- Janvilliers1.47 km²17% commune
- Morsains1.19 km²8% commune
- Écury-le-Repos0.93 km²10% commune
- Fère-Champenoise0.67 km²1% commune
- Reuil-en-Brie0.63 km²11% commune
- Saâcy-sur-Marne0.63 km²5% commune
- Rebais0.48 km²4% commune
- Artonges0.39 km²3% commune
- Saint-Léger0.29 km²3% commune
- Montlevon0.28 km²1% commune
- Bergères-lès-Vertus0.20 km²1% commune
- Tréfols0.02 km²0% commune
- Sept-Sorts0.02 km²1% commune
10 intersecting protected areas
Le Petit Morin de Verdelot à Saint-Cyr-sur-Morin
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
35.90 km² overlap
Le Marais de Saint-Gond
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
17.44 km² overlap
Marais De Reuves
IUCN IVRegional Nature Reserve
0.67 km² overlap
rnr du marais de reuves
IUCN IVLand acquired by a regional conservatory of natural areas
0.65 km² overlap
grand marais de oyes
IUCN IVLand acquired by a regional conservatory of natural areas
0.37 km² overlap
petit marais de oyes
IUCN IVLand acquired by a regional conservatory of natural areas
0.15 km² overlap
vallee du petit morin
IUCN IVLand acquired by a regional conservatory of natural areas
0.07 km² overlap
marais des prés noteau
IUCN IVLand acquired by a regional conservatory of natural areas
0.01 km² overlap
marais aux puyaux
IUCN IVLand acquired by a regional conservatory of natural areas
0.00 km² overlap
1 more protected areassorted by overlap area
hypogée de villevenard
IUCN IVLand acquired by a regional conservatory of natural areas
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 995 distinct species · 177 026 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 36 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 du Petit Morin : 26 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 125 interactions GloBI sur 6 types (connectance 19.8%, filtre Serrano α=0.2). 10 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
648mm
Moisture idx (CMI)
-0,21
Runoff
211mm/an
PET
822mm
AET
545mm
Mean slope
2,2°
Water table
189cm
Forest
2%
Crops
73%
Urban
1%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)