Débits des cours d'eau du bassin de la Loire

Les données suivantes ont surtout été obtenues via les synthèses publiées par les DIREN des régions Auvergne, Rhône-Alpes, Bourgogne, Centre-Val de Loire, Pays de la Loire, Limousin et Poitou-Charentes, qui gèrent une série de stations hydrométriques réparties sur l'ensemble du bassin versant de la Loire.

La Loire à Blois.
La Loire à La Charité-sur-Loire.

Bassin de la Loire

Dans les tableaux qui suivent, ces différentes mesures d'écoulement et de débit sont rassemblées. Certaines n'ont pas encore pu être obtenues et sont laissées en blanc.

Cours d'eauLocalitéDébits (en m3/s)Cote
max. (m)
Max.
instant.
Max.
journ.
Lame
d'eau
(mm)
Surface
(km2)
ModuleVCN3
(étiage)
QIX 2QIX 5QIX 10QIX 20QIX 50
LoireChadrac[1]18,102,0031050063075091024,002 0007354371 310
Lignon VelayYssingeaux6,230,1670110130160190517563350
Dunières[2]Sainte-Sigolène3,140,1735546880962,6410582,4436228
Ance du nordSaint-Julien-d'Ance4,340,19375364748771,389,2388354
LoireBas-en-Basset38,103,105809301 2001 4001 7004,253 5001 1903733 234
LoireMontrond-les-Bains43,102,705909101 1001 3001 6005,541 0401 3802824 832
LoireFeurs[3]44,402,306201 0001 3001 5001 9004,722 4401 8002814 978
Lignon du ForezFeurs8,330,3069961101301403,25220139396664
LoireVillerest67,503,406601 0001 2001 5001 8006,711 8301 8003246 585
RhinsRoanne5,210,1561911101301602,20239132386427
SorninCharlieu7,440,075130200250300-2,65339221515457
ArconceMontceaux-l'Étoile5,650,18557284951103,4814890,7299599
LoireDigoin[4]88,904,806609501 1001 3001 5004,941 8501 6803029 315
ArrouxDigoin34,101,402,603704405206103,885304293423 166
LoireGilly-sur-Loire136,0010,009301 3001 5001 7002 0007,002 0801 90033013 007
BesbreSaint-Pourçain-sur-Besbre8,890,515982971101303,41114107396710
Aron[5]Verneuil (Decize)17,500,591702102302602903,633483013791 465
LoireImphy6,572 2201 52017 390
NièvreConfluent5,00630
LoireNevers179,0013,001 1001 5001 8002 0002 3003,922 4002 23032317 570
AllierCuffy (Confluent)147,0015,006709401 1001 3001 5003,311 3901 51032514 310
LoireCours-les-Barres319,0040,001 8002 5002 9003 3003 9004,903 4003 29031032 610
LoireOrléans349,0034,001 8002 4002 9003 3003 8003,753 2303 13029936 970
LoireBlois363,0043,001 7002 4002 9003 3003 8005,053 05029938 320
CherTours95,904,305107408801 0001 2004,851 00093522313 620
IndreLignières-de-Touraine18,701,6082110130150--2142091813 280
VienneNouâtre201,0025,001 4001 9002 2002 6003 0008,612 4802 30031919 920
ThouetChacé19,000,042303504305106104,235405401823 310
MaineAngers132,0014,008101 2001 4001 6001 9005,61-1 89019022 020
LoireMontjean-sur-Loire849,00110,003 2004 4005 3006 1007 1006,446 3106 300244109 930
LoireNantes-amont869,00110,003 2004 3005 1005 8006 8006 200246111 570
Sèvre NantaiseNantes25,000,272804605706806043362 360
Loire[6]Nantes-aval903,00110,003 4004 4005 1005 8005 250249114 920
LoireSaint-Nazaire931.00100,003 3004 4005 1005 7005 350117 480
LocalitéModuleVCN3QIX 2QIX 5QIX 10QIX 20QIX 50Cote
max.
Max.
instant.
Max.
journ.
Lame
d'eau
Surface
bassin

Diagramme comparatif des débits (module) des affluents de la Loire, supérieurs à 10 m3/s :

Sous-bassin de l'Allier

Cours d'eauLocalitéDébits (en m3/s)Cote
max(m)
Max.
instant.
Max.
journ.
Lame
d'eau
(mm)
Surface
(km2)
ModuleVCN3
(étiage)
QIX 2QIX 5QIX 10QIX 20QIX 50
AllierLangogne8,300,48170300380460-4,79496345809324
AllierNaussac10,200,481803103904705705,13561482817396
AllierSaint-Haon11,801,00200340430520-3,59623384726514
ChapeaurouxSaint-Bonnet-de-Montauroux3,330,1347851101301704,29351191272387
Ance du SudSaint-Préjet-d'Allier2,010,1230496274901,858844,6395161
AllierLangeac22,604,103807009101 100-4,572 1406804001 781
AllierVieille-Brioude29,001,203705907308701 00024,901 3608104052 269
AllierAgnat30,805,00340530660780-5,651 0408163302 950
AlagnonLempdes12,200,321201802102503002,63495237393984
Couze PavinSaint-Floret4,610,53446478911102,5010676675216
Couze ChambonMontaigut-le-Blanc2,650,3228435363752,128644526159
AllierCoudes52,909,205107308701 000-5,391 7401 5203155 317
DoreDorat19,900,82190250300340-3,893562964131 523
AllierSaint-Yorre[7]98,6011,006008401 0001 2001 4005,461 6701 2003498 940
SiouleSaint-Pourçain-sur-Sioule25,501,802003003704405303,105804493282 458
dont BoubleChareil-Cintrat4,050,04262901101301503,70188123231555
AllierCuffy147,0015,006709401 1001 3001 5003,311 3901 51032514 310
LocalitéModuleVCN3QIX 2QIX 5QIX 10QIX 20QIX 50Cote
max.
Max.
instant.
Max.
journ.
Lame
d'eau
Surface
bassin

Sous-bassin de l'Arroux

Cours d'eauLocalitéDébits (en m3/s)Cote
max(m)
Max.
instant.
Max.
journ.
Lame
d'eau
(mm)
Surface
(km2)
ModuleVCN3
(étiage)
QIX 2QIX 5QIX 10QIX 20QIX 50
ArrouxDracy-Saint-Loup6,050,071981401601902204,68160150247776
TerninTavernay3,700,08340546473842,078263456257
CelleLa Celle-en-Morvan3,060,07530394550582,474644703138
MéchetMonthelon2,200,08818222426-1,3726,424,578389
MesvrinMesvres2,100,038303132332,663331330202
ArrouxRigny-sur-Arroux27,900,5302303103604104702,744663573882 277
BourbinceVitry-en-Charollais7,880,5906683941001201,88135119305816
ArrouxDigoin34,101,4002603704405206103,885304293423 166
LocalitéModuleVCN3QIX 2QIX 5QIX 10QIX 20QIX 50Cote
max.
Max.
instant.
Max.
journ.
Lame
d'eau
Surface
bassin

Sous-bassin du Cher

Cours d'eauLocalitéDébits (en m3/s)Cote
max(m)
Max.
instant.
Max.
journ.
Lame
d'eau
(mm)
Surface
(km2)
ModuleVCN3
(étiage)
QIX 2QIX 5QIX 10QIX 20QIX 50
BoronSaint-Marcel-en-Marcillat0,830,00213172022-1,181814,434277
TartasseLa Petite-Marche1,130,002-----1,6023,915,9275130
CherChambonchard5,710,04659901101301603,01174142349517
TardesÉvaux-les-Bains9,080,0311001501902202606,17353460336854
dont VoueizeGouzon1,430,00513172022262,1220,816,9314144
CherMontluçon-aval16,100,751602402903404,393092682771 836
AumanceHérisson6,510,07891301501802103,79288216222928
CherSaint-Amand-Montrond29,001,302703904605406304,045454272633 492
CherVierzon[8]31,002,502704105005902,935285002164 550
YèvreVierzon16,502 220
ArnonMéreau[9]13,701,501001601902302,812422232002 164
CherSelles-sur-Cher62,604,603705206307308605,537277102149 252
SauldreSalbris[10]9,550,65751101401601904,701701542521 200
SauldreSelles-sur-Cher14,900,76931401702002303,452202082102 254
CherChâteauneuf-sur-Cher[11]79,005,004606307308403,9375573221611 540
FouzonMeusnes5,740,204670861001202,321251171811 002
CherTours95,904,305107408801 0001 2004,851 00093522313 620
LocalitéModuleVCN3QIX 2QIX 5QIX 10QIX 20QIX 50Cote
max.
Max.
instant.
Max.
journ.
Lame
d'eau
Surface
bassin

Sous-bassin de la Gartempe

Cours d'eauLocalitéDébits (en m3/s)Cote
max(m)
Max.
instant.
Max.
journ.
Lame
d'eau
(mm)
Surface
(km2)
ModuleVCN3
(étiage)
QIX 2QIX 5QIX 10QIX 20QIX 50
GrauladeSaint-Silvain-Montaigut0,2470,042,12,83,23,74,31,063,372,5942218,5
ArdourFolles1,820,2214192226302,1531,728440131
Gartempe[12]Folles8,280,735678921101203,18106106454570
SemmeDroux2,010,0821303743512,5545,530,5360177
VincouBellac3,570,0584368851001202,89197100395286
GartempeSaint-Bonnet-de-Bellac17,701,70130180210250-2251891743991 410
BrameOradour-Saint-Genest2,300,01937536373873,7972,851,2309235
GartempeMontmorillon21,901,502003003604204903,564493483721 868
AnglinMérigny13,000,292103304004705604,566114952521 627
GartempeLa Roche-Posay38,003 922
LocalitéModuleVCN3QIX 2QIX 5QIX 10QIX 20QIX 50Cote
max.
Max.
instant.
Max.
journ.
Lame
d'eau
Surface
bassin

Sous-bassin de la Creuse

Cours d'eauLocalitéDébits (en m3/s)Cote
max(m)
Max.
instant.
Max.
journ.
Lame
d'eau
(mm)
Surface
(km2)
ModuleVCN3
(étiage)
QIX 2QIX 5QIX 10QIX 20QIX 50
CreuseFelletin3,870,2527354147541,919494740165
RozeilleMoutier-Rozeille2,630,04719273136422,045858447186
CreuseGlénic13,000,30150220260310-3,01247181438944
CreuseFresselines[13]16,100,391401902302603103,274604604131 240
Petite Creuse[14]Fresselines8,740,151201702002402803,75235196325850
SédelleLafat2,890,1136526474882,668957408224
CreuseLac de Chambon[15]30,003342 550
BouzanneVelles3,230,18631001301501803,68180111235434
CreuseCiron36,401,803605106007008205,706315553453 343
GartempeMontmorillon22,201,602102903504104803,564493483761 868
AnglinMérigny13,000,292103304004705604,566114952521 627
GartempeLa Roche-Posay38,003 922
CreuseLeugny76,706,306709601 1001 3001 6006,991 2101 1103038 020
ClaiseAbilly4,480,16426174861002,3310396,1140897
Brignon[16]Paulmy0,3360,0647,1111417202,2116,211,414275
CreuseBec des 2 Eaux86,009 570
LocalitéModuleVCN3QIX 2QIX 5QIX 10QIX 20QIX 50Cote
max.
Max.
instant.
Max.
journ.
Lame
d'eau
Surface
bassin

Sous-bassin du Clain

Cours d'eauLocalitéDébits (en m3/s)Cote
max(m)
Max.
instant.
Max.
journ.
Lame
d'eau
(mm)
Surface
(km2)
ModuleVCN3
(étiage)
QIX 2QIX 5QIX 10QIX 20QIX 50
ClainVivonne6,800,495589110130-2,33143114223965
VonneCloué3,090,1161991201501803,13177123306320
ClouèreChâteau-Larcher2,550,09316243035-3,5446,730,2211382
ClainVivonne-aval14,40,91981501802202602,463082782501 822
MiossonSmarves0,3670,0066,7121519-1,4317,116,412990
BoivreVouneuil-sous-Biard1,040,0559,2162125-1,7930,226,5178185
dont VandelogneAyron0,3240,0015,28,21012-1,519,157,816662
AuxanceQuinçay1,510,05311182327321,6527,522,3182262
ClainDissay22,301,701302102603103702,374133822452 886
LocalitéModuleVCN3QIX 2QIX 5QIX 10QIX 20QIX 50Cote
max.
Max.
instant.
Max.
journ.
Lame
d'eau
Surface
bassin

Sous-bassin de la Vienne

Cours d'eauLocalitéDébits (en m3/s)Cote
max(m)
Max.
instant.
Max.
journ.
Lame
d'eau
(mm)
Surface
(km2)
ModuleVCN3
(étiage)
QIX 2QIX 5QIX 10QIX 20QIX 50
ViennePeyrelevade1,780,1014192225282,1426,63596058,5
VienneEymoutiers6,830,62547895110-2,5014871,6586369
CombadeRoziers-Saint-Georges3,600,4424303539481,8041,537,3658173
MauldePeyrat-le-Château2,460,3415182022-2,2421,91780497
Mauldeconfluence7
VienneSaint-Priest-Taurion23,602,301301802202502902,712532166471 160
TaurionSaint-Priest-Taurion19,001,101402102502903503,232282155851 030
VienneLe Palais-sur-Vienne43,903,802503504104705503,046005102 296606
BrianceCondat-sur-Vienne8,210,641201702002302704,25409218435597
dont RoselleSaint-Hilaire-Bonneval1,600,1432465563754,8991,545,8406125
AurenceIsle1,240,1217232730-2,3628,419,445187
AixetteAixe-sur-Vienne1,680,0338566879932,9582,243,7351152
VienneVerneuil-sur-Vienne61,006,604205907008109404,037686405703 390
GlaneSaint-Junien3,950,1636505968802,3274,352435288
GorreChaillac-sur-Vienne2,140,06535526475893,369454,5364186
VienneÉtagnac71,307,104806607808901 0003,868307545514 100
ClainDissay22,301,701302102603103702,374133822452 886
VienneChâtellerault112,0011,0087013001500170021005,031 4001 4003589 910
VienneIngrandes-sur-Vienne121,0013,008101 1001 4001 6001 8007,771 4201 40038010 050
CreuseLeugny76,706,306709601 1001 3001 6006,991 2101 1103038 020
VienneNouâtre201,0025,001 4001 9002 2002 6003 0008,612 4802 30031919 920
VienneCandes-Saint-Martin210,0021 105
LocalitéModuleVCN3QIX 2QIX 5QIX 10QIX 20QIX 50Cote
max.
Max.
instant.
Max.
journ.
Lame
d'eau
Surface
bassin

Sous-bassin de la Maine

Cours d'eauLocalitéDébits (en m3/s)Cote
max(m)
Max.
instant.
Max.
journ.
Lame
d'eau
(mm)
Surface
(km2)
ModuleVCN3
(étiage)
QIX 2QIX 5QIX 10QIX 20QIX 50
LoirDurtal32,204,301702603103704402,874544491287 920
SartheSaint-Denis-d'Anjou47,004,603104505406207302,196856662017 380
MayenneChambellay39,001,103505106207208502,598247982974 160
Oudon[17]Segré8,980,0051101802302702,372512342171 310
MaineAngers132,0014,008101 2001 4001 6001 9005,61-1 89019022 020

Sous-bassin du Loir

Le Loir, au pied du château de Châteaudun.
Cours d'eauLocalitéDébits (en m3/s)Cote
max(m)
Max.
instant.
Max.
journ.
Lame
d'eau
(mm)
Surface
(km2)
ModuleVCN3
(étiage)
QIX 2QIX 5QIX 10QIX 20QIX 50
LoirAlluyes (1971-1987)2,070,046-----2,1092,767,185764
OzanneTrizay-lès-Bonneval (1973- )1,500,03234516272861,9265,252,6178268
LoirSaint-Maur-sur-le-Loir (1967- )3,380,1555911101401702,03147138921 160
ConieConie-Molitard (1969- )2,630,5546,17,48,7--5,517,55163510
YerreSaint-Hilaire-sur-Yerre (1993- )1,630,1037587286-2,079065,5174297
AigreRomilly-sur-Aigre (1969- )1,590,163,86,489,6120,712424181276
LoirVillavard14,602,30991601902302802,762592561024 545
CendrineTernay0,1150,0221,93,34,15-1,375,313,7114525
BrayeSargé-sur-Braye3,150,5262110140170-2,54187101200497
AnilleSaint-Gervais-de-Vic0,6160,1511172024-2,282216,219898
Tusson[18]La Chapelle-Gaugain0,5440,08012192428-1,8128,517,918394
VeuveSaint-Pierre-du-Lorouër0,9570,2914243037452,7739,624194156
LoirFlée24,00------3,403643131275 940
AuneLuché-Pringé1,170,0717,7121417201,8817,217165224
LoirDurtal32,203,501702603103704402,874544491287 920
LocalitéModuleVCN3QIX 2QIX 5QIX 10QIX 20QIX 50Cote
max.
Max.
instant.
Max.
journ.
Lame
d'eau
Surface
bassin

Sous-bassin de la Sarthe

La Sarthe à Saint-Céneri-le-Gérei.
Cours d'eauLocalitéDébits (en m3/s)Cote
max(m)
Max.
instant.
(m3)
Max.
journ.
(m3)
Lame
d'eau
(mm)
Surface
(km2)
ModuleVCN3
(étiage)
QIX 2QIX 5QIX 10QIX 20QIX 50
HoëneLa Mesnière0,610,224,86,77,99,111,01,2910,88,125476
SartheSaint-Céneri-le-Gérei7,110,415577911101203,66142133248908
OrnetteSaint-Pierre-des-Nids0,540,00211151820-2,0817,611,931554
TerraconSaint-Pierre-des-Nids0,3830,0015,67,89,211,0-1,389,27,134635
MerdereauSaint-Paul-le-Gaultier1,180,0614192226301,6820,517,0316118
VaudelleSaint-Georges-le-Gaultier1,010,0811162023-1,8419,914,735889
OrtheDouillet1,210,1411162023-1,8319,215,830346
BienneThoiré-sous-Contensor0,670,0336,99,71213-1,6010,78,3203104
SaosnetteThoiré-sous-Contensor0,180,0120,81,21,51,7-1,251,331,2715936
Orne saosnoiseMontbizot2,640,1024374553633,666052,4164510
SartheNeuville-sur-Sarthe20,500,861702402903303903,263143022392716
SartheSouillé23,201,10220310370440-3,403463212722700
HuisneMontfort-le-Gesnois13,103,70711001201401703,041781562201890
SartheSpay35,204,302203003604104803,064804802105285
Roule CrottesArnage0,380,00534,14,95,6-1,974,824,5815876
RhonneGuécélard0,200,001,11,51,82,1-1,041,661,648077
FessardCérans-Foulletourte0,180,0041,52,22,73,2-2,004,843,0312247
Orne champenoiseVoivres-lès-le-Mans0,340,023,15,26,67,99,61,669,837,4518459
GéeFercé-sur-Sarthe0,640,056,4101315182,6416,912,8182112
VézanneMalicorne-sur-Sarthe0,360,0024,16,37,89,2-2,459,349,2914082
Deux FondsAvoise0,450,0283,66,389,7-1,5110,86,9417283
BerdinTennie0,170,0042,94,35,36,27,41,635,853,424822
VègreAsnières-sur-Vègre3,190,2530475868812,777161252401
ErveAuvers-le-Hamon2,750,05426478921103,1596,271,9229380
VaigeBouessay1,510,00124374654643,2949,843,5204233
TaudeSaint-Brice0,280,00757,99,912142,6711,87,918348
SartheSaint-Denis-d'Anjou47,404,603104405306107202,196856662037380
LoirDurtal32,203,501702603103704402,874544491287 920
SartheConfluent82
LocalitéModuleVCN3QIX 2QIX 5QIX 10QIX 20QIX 50Cote
max.
Max.
instant.
Max.
journ.
Lame
d'eau
Surface
bassin

Notes et références

Cours supérieur de la Loire.

Voir aussi

Articles connexes

Liens externes