HydroBASINS lev08 watershed · #2080448090
Bassin du Thérain
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 : Oise, Seine-Maritime
Sub-basin area
1 240,7km²
Upstream area
1 240,8km²
Discharge
13,95m³/s
Mean elev.
135m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 1212.9 km²97.4% of basin
- 31.9 km²2.6% of basin
194 communes (GADM L5)Available for FRA, RWA
- Beauvais33.45 km²100% commune
- Bresles21.13 km²100% commune
- La Neuville-en-Hez21.07 km²71% commune
- Milly-sur-Thérain19.75 km²100% commune
- Auneuil19.49 km²86% commune
- Bury17.40 km²99% commune
- Cauvigny17.11 km²100% commune
- Ully-Saint-Georges15.47 km²83% commune
- Allonne15.26 km²100% commune
- Berneuil-en-Bray14.91 km²100% commune
- Cires-lès-Mello14.67 km²87% commune
- Tillé14.58 km²100% commune
- Blicourt14.50 km²100% commune
- Ons-en-Bray14.49 km²100% commune
- Laversines13.94 km²100% commune
- Songeons13.80 km²100% commune
- Troissereux13.52 km²100% commune
- Achy12.83 km²100% commune
- Verderel-lès-Sauqueuse12.43 km²100% commune
- Warluis12.00 km²100% commune
- Escames11.84 km²99% commune
- Hermes11.59 km²100% commune
- Blacourt11.40 km²100% commune
- Senantes11.38 km²56% commune
- Grumesnil11.25 km²100% commune
- Feuquières11.24 km²94% commune
- Campeaux11.22 km²100% commune
- Auteuil10.98 km²91% commune
- Roy-Boissy10.78 km²100% commune
- Saint-Omer-en-Chaussée10.44 km²100% commune
- Ponchon10.39 km²100% commune
- Haucourt10.38 km²100% commune
- Mouy10.21 km²100% commune
- Hodenc-en-Bray10.18 km²100% commune
- Saint-Paul10.17 km²100% commune
- Fouquerolles10.11 km²100% commune
- Cuigy-en-Bray9.96 km²99% commune
- Lihus9.94 km²62% commune
- Luchy9.77 km²87% commune
- Villers-Saint-Barthélemy9.73 km²100% commune
- Noailles9.72 km²100% commune
- Lachapelle-aux-Pots9.69 km²100% commune
- Savignies9.65 km²100% commune
- Bailleul-sur-Thérain9.48 km²100% commune
- Ernemont-Boutavent9.37 km²100% commune
- Crillon9.20 km²100% commune
- Thérines9.14 km²100% commune
- Silly-Tillard9.11 km²83% commune
- Oroër9.02 km²100% commune
- Therdonne8.99 km²100% commune
- Saint-Sulpice8.84 km²100% commune
- Omécourt8.72 km²100% commune
- Ansacq8.70 km²100% commune
- Rotangy8.59 km²89% commune
- La Rue-Saint-Pierre8.40 km²100% commune
- Bonnières8.27 km²100% commune
- Juvignies8.22 km²100% commune
- Saint-Maur8.16 km²100% commune
- Marseille-en-Beauvaisis8.14 km²100% commune
- Le Mont-Saint-Adrien7.92 km²100% commune
- Nivillers7.50 km²100% commune
- Saint-Arnoult7.49 km²100% commune
- Le Fay-Saint-Quentin7.32 km²100% commune
- Loueuse7.19 km²100% commune
- Fontaine-Saint-Lucien7.18 km²100% commune
- Berthecourt7.17 km²100% commune
- Abbecourt7.15 km²100% commune
- Grémévillers7.07 km²100% commune
- Montataire6.99 km²65% commune
- Fontaine-Lavaganne6.99 km²100% commune
- Brombos6.96 km²96% commune
- Haute-Épine6.96 km²100% commune
- Formerie6.79 km²84% commune
- Villers-Saint-Sépulcre6.75 km²100% commune
- Balagny-sur-Thérain6.70 km²100% commune
- Rainvillers6.67 km²100% commune
- Frocourt6.62 km²100% commune
- Fouquenies6.49 km²100% commune
- Hondainville6.47 km²100% commune
- Rochy-Condé6.47 km²100% commune
- Villembray6.39 km²100% commune
- Hanvoile6.32 km²100% commune
- Espaubourg6.22 km²100% commune
- Fontenay-Torcy6.18 km²100% commune
- Velennes6.18 km²100% commune
- Saint-Aubin-en-Bray6.15 km²100% commune
- Aux Marais6.15 km²100% commune
- Briot6.10 km²97% commune
- Oudeuil6.05 km²100% commune
- Canny-sur-Thérain6.03 km²100% commune
- Goincourt6.02 km²100% commune
- Pierrefitte-en-Beauvaisis5.98 km²100% commune
- Heilles5.80 km²100% commune
- Gaudechart5.57 km²100% commune
- Villers-Vermont5.51 km²82% commune
- Saint-Germain-la-Poterie5.49 km²100% commune
- Saint-Vaast-lès-Mello5.44 km²69% commune
- Muidorge5.41 km²100% commune
- Saint-Martin-le-Nœud5.36 km²100% commune
- Auchy-la-Montagne5.32 km²68% commune
- Saint-Deniscourt5.22 km²100% commune
- Lafraye5.21 km²98% commune
- Haudivillers5.20 km²52% commune
- Mureaumont5.19 km²100% commune
- Foulangues5.18 km²100% commune
- Thury-sous-Clermont5.07 km²100% commune
- Morvillers4.98 km²100% commune
- Martincourt4.87 km²100% commune
- Moliens4.83 km²52% commune
- Lachapelle-sous-Gerberoy4.82 km²100% commune
- Saint-Félix4.82 km²100% commune
- Gaillefontaine4.78 km²18% commune
- Bonlier4.74 km²100% commune
- Wambez4.74 km²100% commune
- Guignecourt4.69 km²100% commune
- Monceaux-l'Abbaye4.66 km²100% commune
- Cramoisy4.60 km²75% commune
- Sully4.56 km²100% commune
- Boutavent4.54 km²100% commune
- Gerberoy4.51 km²100% commune
- Rémérangles4.46 km²51% commune
- La Neuville-Vault4.27 km²100% commune
- Saint-Samson-la-Poterie4.27 km²100% commune
- Maisoncelle-Saint-Pierre4.23 km²100% commune
- Herchies4.22 km²100% commune
- Héricourt-sur-Thérain4.21 km²100% commune
- Abbeville-Saint-Lucien4.21 km²76% commune
- Saint-Léger-en-Bray4.21 km²100% commune
- Vrocourt4.14 km²100% commune
- Hautbos4.14 km²100% commune
- Maysel4.10 km²98% commune
- Troussures4.04 km²81% commune
- Prévillers4.00 km²71% commune
- La Neuville-Garnier3.90 km²49% commune
- Blargies3.85 km²37% commune
- Haucourt3.77 km²100% commune
- Mouchy-le-Châtel3.75 km²100% commune
- La Neuville-sur-Oudeuil3.74 km²100% commune
- Hodenc-l'Évêque3.70 km²100% commune
- Glatigny3.68 km²100% commune
- Francastel3.66 km²28% commune
- Villers-sur-Bonnières3.61 km²100% commune
- Grez3.40 km²58% commune
- Angy3.37 km²100% commune
- Mello3.30 km²100% commune
- Rousseloy3.29 km²89% commune
- Buicourt3.25 km²98% commune
- Essuiles3.00 km²22% commune
- Pisseleu2.96 km²100% commune
- Rothois2.95 km²100% commune
- Litz2.80 km²29% commune
- Sainte-Geneviève2.79 km²34% commune
- Criquiers2.78 km²12% commune
- Lhéraule2.78 km²100% commune
- Cambronne-lès-Clermont2.69 km²29% commune
- Bouvresse2.66 km²100% commune
- La Neuville-d'Aumont2.64 km²49% commune
- Thieuloy-Saint-Antoine2.63 km²100% commune
- Le Vauroux2.59 km²27% commune
- Le Coudray-Saint-Germer2.23 km²16% commune
- Haussez2.10 km²15% commune
- Hannaches2.08 km²22% commune
- Neuilly-sous-Clermont2.06 km²26% commune
- Broquiers1.97 km²74% commune
- Villotran1.81 km²36% commune
- Thiverny1.78 km²92% commune
- Halloy1.78 km²50% commune
- Neuilly-en-Thelle1.58 km²10% commune
- Montreuil-sur-Thérain1.49 km²100% commune
- Lalandelle1.48 km²13% commune
- Crèvecœur-le-Grand1.30 km²11% commune
- Lachapelle-Saint-Pierre1.29 km²30% commune
- Le Coudray-sur-Thelle1.12 km²31% commune
- Saint-Germer-de-Fly1.07 km²5% commune
- Maulers0.89 km²12% commune
- Ercuis0.65 km²15% commune
- Viefvillers0.64 km²16% commune
- Saint-Michel-d'Halescourt0.53 km²11% commune
- Hécourt0.51 km²7% commune
- Reuil-sur-Brêche0.48 km²4% commune
- Novillers0.38 km²8% commune
- Agnetz0.33 km²3% commune
- Blaincourt-lès-Précy0.28 km²3% commune
- Saint-Leu-d'Esserent0.21 km²2% commune
- Saint-Quentin-des-Prés0.19 km²2% commune
- Bazancourt0.17 km²5% commune
- Cauffry0.09 km²2% commune
- Sarcus0.09 km²1% commune
- Le Hamel0.08 km²1% commune
- Gancourt-Saint-Étienne0.04 km²0% commune
- La Houssoye0.04 km²1% commune
- Doudeauville0.01 km²0% commune
- Conteville0.00 km²0% commune
- Laboissière-en-Thelle0.00 km²0% commune
20 intersecting protected areas
Massif forestier de Hez-Froidmont et Mont César
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
8.50 km² overlap
Massif forestier du Haut Bray de l'Oise
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
6.45 km² overlap
Cuesta du Bray
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
6.37 km² overlap
Réseau de coteaux crayeux du bassin de l'Oise aval (Beauvaisis)
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.85 km² overlap
Landes et forêts humides du Bas Bray de l'Oise
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.31 km² overlap
la grippe
IUCN IVLand acquired by a regional conservatory of natural areas
0.30 km² overlap
les larris d auteuil
IUCN IVLand acquired by a regional conservatory of natural areas
0.21 km² overlap
le marais chantraine
IUCN IVLand acquired by a regional conservatory of natural areas
0.19 km² overlap
le mont cesar
IUCN IVLand acquired by a regional conservatory of natural areas
0.17 km² overlap
11 more protected areassorted by overlap area
les prairies du pays de bray
IUCN IVLand acquired by a regional conservatory of natural areas
0.14 km² overlap
le mont florentin
IUCN IVLand acquired by a regional conservatory of natural areas
0.12 km² overlap
les coteaux du therain
IUCN IVLand acquired by a regional conservatory of natural areas
0.05 km² overlap
Pays de Bray – Cuestas Nord et Sud
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.04 km² overlap
Land acquired by a regional conservatory of natural areas
0.04 km² overlap
Bois Des Tailles
IUCN IVBiotope Protection Order
0.02 km² overlap
Cavité de Larris Millet à Saint-Martin-le-Nœud
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.02 km² overlap
la prairie d auneuil
IUCN IVLand acquired by a regional conservatory of natural areas
0.01 km² overlap
la cavite du larris millet
IUCN IVLand acquired by a regional conservatory of natural areas
0.01 km² overlap
Land acquired by a regional conservatory of natural areas
0.00 km² overlap
le petit blamont
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
6 467 distinct species · 304 626 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 33 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 Thérain : 20 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 121 interactions GloBI sur 6 types (connectance 21.6%, filtre Serrano α=0.2). 14 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
670mm
Moisture idx (CMI)
-0,14
Runoff
343mm/an
PET
780mm
AET
545mm
Mean slope
2,4°
Water table
162cm
Forest
3%
Crops
60%
Urban
6%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)