148:
observed in the 1950s and 1960s. The reduction in the flow of the river was much greater than the reduction in the rainfall. The average rainfall for 1981-1989 was 20% less than for 1961-1970 while the discharge of the river was reduced by 75%. The effect of the reduced rainfall was less extreme for other tributaries of the Niger. Over the same period the catchment basin of the Upper Niger suffered a similar 20% reduction in rainfall but the readings at the
185:
discharge was 13.4 km (3.2 cu mi) . A downstream flow of 10 m (350 cu ft)/s can be maintained during the dry season by opening a sluice gate. From the published information it is unclear how much of the total discharge will be diverted for irrigation and, of the diverted water, how much will drain back into the river. The downstream effect of the dam will be to delay the arrival of the annual flood and to reduce its intensity.
25:
959:
17:
212:
The effects of the dams on the flooding of the Inland Niger Delta downstream of Mopti are expected to be modest, as the discharge of the Bani is only one third of that of the Niger: for the period 1952-2002 the average flow at Douna was 424 m (15,000 cu ft)/s compared with 1,280 m
198:
near
Kourouba and the extension of the area irrigated by the Talo dam. The proposed Djenné dam will retain 0.3 km (0.072 cu mi) of water, significantly more than the Talo dam. It will allow the "controlled flooding" of 14,000 ha of the Pondori floodplain (on the left bank of the
128:
The annual rainfall varies across the catchment basin with the southern area in CĂ´te d'Ivoire receiving 1,500 mm (59 in) a year while the northern area around Douna receiving only 700 mm (28 in). For the period 1965-1995 the average annual rainfall for the basin was 1,100 mm
147:
There is a significant inter-annual variation in the rainfall and, as a consequence, in the quantity of water flowing in the river. The drought that started at the beginning of the 1970s led to a very large reduction in the flow and up to the present time the volumes are still much lower than those
184:
The retaining wall is 5 m (16 ft) high and 295 m (968 ft) in length, creating a reservoir with a capacity to retain 0.18 km (0.043 cu mi) of water. This volume represents 1.3% of the average annual discharge of the river (over the period 1952-2002 the average
193:
In May 2009 the
African Development Bank approved funding for an irrigation dam/weir to be built on the Bani near Soala, a village situated 12 km (7.5 mi) south of Djenné. The dam is one element in a 6-year 66 million USD program that also includes the building of a dam on the
169:. Prior to the construction of the dam, these areas were only fully flooded in very wet years, the most recent of which occurred in 1967. The dam is located 43 km (27 mi) west of San, 66 km (41 mi) downstream of Douna and 110 km (68 mi) upstream of
152:
gauge station were only reduced to 50% of the earlier values. Because of the accumulated groundwater deficit, even in a year with high rainfall, the discharge of the Bani River is less than in the wet decades of the 1950s and 1960s.
589:
481:
A flow of 1 m (35 cu ft) corresponds to 0.0316 km (0.0076 cu mi) per year. 424 m (15,000 cu ft)/s is equivalent to 13.4 km (3.2 cu mi)/y
132:
The discharge of the Bani River is also highly seasonal, with the maximum flow occurring at the end of
September and very little flow between February and June. The river enters the
566:
671:
Descroix, L.; et al. (2009), "Spatio-temporal variability of hydrological regimes around the boundaries between
Sahelian and Sudanian areas of West Africa: A synthesis",
720:. Pages 30–31 contain a table dated 2003 prepared by J.R. Patenaude, giving values for the water flow in an average year (assumed to be 125 m/s or 3.9 km/y).
628:
451:
725:
226:
44:
769:
863:
1328:
1279:
125:
upstream of Douna has an area of 102,000 km (39,000 sq mi), 85% of which lies in southern Mali and 15% in northern CĂ´te d'Ivoire.
199:
river to the south of Djenné) to allow the cultivation of rice and the irrigation of an additional 5000 ha for growing 'floating grass' (
173:. The dam acts as a weir in that water can flow over the top of the retaining wall. The construction of the dam was highly controversial. The
905:
739:
Mahé, Gil (2009), "Surface/groundwater interactions in the Bani and
Nakambe rivers, tributaries of the Niger and Volta basins, West Africa",
494:
869:
129:(43 in). The rainfall is seasonal with most of the rain falling between May and October. The maximum rainfall occurs in August.
1203:
833:
820:
1004:
853:. Also published in French with the title "Le Niger: une Artère vitale. Gestion efficace de l’eau dans le bassin du Haut Niger".
703:
502:, République du Mali, Ministère des Mines, de l’énergie et de l’eau: Direction Nationale de l'Hydraulique, 2006, archived from
174:
634:
1229:
1208:
254:
529:
1173:
898:
32:
lies to the south of the river near the centre of the image. The Talo dam is near the edge on the left hand side.
401:
178:
74:
1323:
1193:
1178:
800:
1224:
1265:
1239:
948:
891:
748:
682:
673:
201:
591:
Mali: Irrigation
Development Programme - Phase I, Summary Environmental and Social Impact Assessment
1318:
1260:
1255:
928:
958:
503:
114:
988:
943:
938:
875:
133:
1188:
181:
was criticised for not fully taking into account the hydrological impact downstream of the dam.
983:
933:
829:
792:
568:
Mali: 33.6 billion FCFA and an additional 76.2 billion FCFA for the development of irrigation
784:
756:
690:
1234:
1020:
319:
313:
195:
300:
752:
686:
24:
1070:
1015:
839:
122:
106:
48:
Average monthly flow (m/s) at the Douna hydrometric station over the period 1922–1994.
1312:
1065:
1040:
453:
Moyen Bani plains development program: Summary of the environmental impact assessment
712:
1055:
1045:
1035:
978:
1157:
788:
694:
1152:
1080:
1060:
993:
973:
914:
78:
62:
1198:
1050:
1025:
819:
Zwarts, Leo; van
Beukering, Pieter; Kone, Bakary; Wymenga, Eddy, eds. (2005),
162:
98:
70:
1294:
1281:
544:
531:
416:
403:
269:
256:
230:
Average annual flow of the Bani River (m/s) at the Douna hydrographic station
1075:
874:, CGIAR Challenge Program on Water and Food : BFP Niger, archived from
770:"The uneven geographies of transnational advocacy: The case of the Talo Dam"
287:
214:
166:
149:
137:
110:
58:
29:
796:
170:
822:
The Niger, a lifeline: Effective water management in the Upper Niger Basin
760:
1116:
1106:
283:
102:
705:
The Talo Dam
Project: Projet de Mise en Valeur Des Plaines Du Moyen Bani
1183:
1136:
1096:
118:
97:
The Bani River has three main tributaries: the Baoulé that rises near
1131:
1126:
1101:
82:
16:
1111:
86:
23:
15:
526:
The village of Saola is located on the left back of the Bani at
66:
887:
1121:
883:
647:
614:
347:
321:
Haut-Sénégal-Niger. Volume 1 Le Pays, les
Peuples, les Langues
224:
161:
In 2006 the Talo Dam was constructed to irrigate parts of the
42:
633:, Unesco International Hydrological Programme, archived from
282:
near the bridge over the river carrying the RN6 highway from
140:
and after the annual rains the river floods (the French word
727:
The Niger River Basin: A vision for sustainable management
828:, Veenwouden, the Netherlands: Altenburg & Wymenga,
741:
Hydrological
Sciences–Journal des Sciences Hydrologiques
702:
Fisher, William; Meierotto, Lisa; Russel, Ryan (2001),
469:
117:
and the Banifing-Lotio that drains the region around
626:
Data from several sources. For 1951-1980 taken from
1248:
1217:
1166:
1145:
1089:
1002:
966:
921:
89:. Its length is about 1,100 km (680 mi).
370:
368:
654:, p. 98 Fig. 9. For 1991-1997 taken from
144:is sometimes used) and covers the floodplain.
899:
650:, p. 271 Table I.1. For 1990 taken from
81:rivers some 160 km (99 mi) east of
8:
324:(in French), Paris: Émile Larose, p. 69
251:The Douna Hydrometric Station is located at
213:(45,000 cu ft)/s for the Niger at
630:Hydrographic data for Douna, Mali 1922-1980
165:to the south of the river near the town of
28:A satellite photo of the Bani. The town of
906:
892:
884:
101:in CĂ´te d'Ivoire and passes just south of
438:
655:
651:
386:
335:
864:Photographs of the Bani River at Douna.
724:Golitzen, Katherin George, ed. (2005),
247:
245:
241:
489:
487:
301:UNH/GRDC Composite Runoff Fields V 1.0
7:
374:
359:
777:Journal of Environmental Management
470:Fisher, Meierotto & Russel 2001
711:, Clark University, archived from
85:and it merges with the Niger near
14:
957:
597:, African Development Bank, 2008
571:, African Development Bank, 2009
459:, African Development Fund, 1997
175:environmental impact assessment
69:. The river is formed from the
1329:Tributaries of the Niger River
1:
789:10.1016/j.jenvman.2008.07.024
733:, Washington, DC.: World Bank
695:10.1016/j.jhydrol.2008.12.012
312:Bani means "little river" in
1230:National Park of Upper Niger
1209:River Niger Bridge (Onitsha)
496:Politique Nationale de l'eau
871:Photographs of the Talo Dam
646:. For 1981-1989 taken from
318:Delafosse, Maurice (1912),
1345:
955:
768:Meierotto, Lisa (2009),
389:, p. 92 Table A2.4.
179:African Development Bank
783:(Suppl. 3): S279–S285,
658:, p. 50 Table 3.6.
398:The dam is located at
350:, p. 18 Fig. 2.3.
270:13.213853°N 5.903105°W
33:
21:
20:The Bani River system.
1225:Niger Basin Authority
761:10.1623/hysj.54.4.704
545:13.79824°N 4.531775°W
362:, p. 706 Fig. 1.
27:
19:
1266:Ogbaru boat disaster
1240:Kainji National Park
674:Journal of Hydrology
338:, p. 81 Map 11.
275:13.213853; -5.903105
202:Echinochloa stagnina
177:commissioned by the
39:Bani River at Douna
1291: /
1261:Kwara boat disaster
1256:Kebbi boat disaster
974:Source of the Niger
753:2009HydSJ..54..704M
687:2009JHyd..375...90D
550:13.79824; -4.531775
541: /
413: /
266: /
209:) for animal feed.
806:on 7 February 2014
648:Zwarts et al. 2005
615:Zwarts et al. 2005
417:13.2774°N 5.2929°W
348:Zwarts et al. 2005
134:Inland Niger Delta
34:
22:
1274:
1273:
984:Inner Niger Delta
57:is the principal
1336:
1306:
1305:
1303:
1302:
1301:
1296:
1295:14.483°N 4.200°W
1292:
1289:
1288:
1287:
1284:
1174:King Fahd Bridge
1167:Dams and bridges
961:
908:
901:
894:
885:
879:
852:
851:
850:
844:
838:, archived from
827:
814:
813:
811:
805:
799:, archived from
774:
763:
734:
732:
719:
717:
710:
697:
659:
645:
644:
642:
624:
618:
612:
606:
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579:
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563:
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534:
524:
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516:
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508:
501:
491:
482:
479:
473:
467:
461:
460:
458:
448:
442:
436:
430:
428:
427:
425:
424:
423:
422:13.2774; -5.2929
418:
414:
411:
410:
409:
406:
396:
390:
384:
378:
372:
363:
357:
351:
345:
339:
333:
327:
325:
310:
304:
297:
291:
281:
280:
278:
277:
276:
271:
267:
264:
263:
262:
259:
249:
205:know locally as
109:that rises near
1344:
1343:
1339:
1338:
1337:
1335:
1334:
1333:
1309:
1308:
1299:
1297:
1293:
1290:
1285:
1282:
1280:
1278:
1277:
1275:
1270:
1244:
1235:W National Park
1218:Protected Areas
1213:
1194:Kennedy Bridge
1162:
1141:
1085:
1021:Sankarani River
1008:
998:
962:
953:
917:
912:
868:
860:
848:
846:
842:
836:
825:
818:
809:
807:
803:
772:
767:
738:
730:
723:
715:
708:
701:
681:(1–2): 90–102,
670:
667:
662:
640:
638:
627:
625:
621:
613:
609:
600:
598:
594:
588:
587:
583:
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549:
547:
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540:
535:
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530:
528:
527:
525:
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512:
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506:
499:
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485:
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476:
468:
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456:
450:
449:
445:
437:
433:
421:
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415:
412:
407:
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402:
400:
399:
397:
393:
385:
381:
373:
366:
358:
354:
346:
342:
334:
330:
317:
314:Mande languages
311:
307:
298:
294:
274:
272:
268:
265:
260:
257:
255:
253:
252:
250:
243:
239:
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228:
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196:Sankarani River
191:
159:
95:
51:
50:
49:
46:
45:
43:
12:
11:
5:
1342:
1340:
1332:
1331:
1326:
1324:Rivers of Mali
1321:
1311:
1310:
1300:14.483; -4.200
1272:
1271:
1269:
1268:
1263:
1258:
1252:
1250:
1246:
1245:
1243:
1242:
1237:
1232:
1227:
1221:
1219:
1215:
1214:
1212:
1211:
1206:
1201:
1196:
1191:
1186:
1181:
1179:Martyrs Bridge
1176:
1170:
1168:
1164:
1163:
1161:
1160:
1155:
1149:
1147:
1143:
1142:
1140:
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1134:
1129:
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1119:
1114:
1109:
1104:
1099:
1093:
1091:
1087:
1086:
1084:
1083:
1078:
1073:
1071:Forcados River
1068:
1063:
1058:
1053:
1048:
1043:
1038:
1033:
1028:
1023:
1018:
1016:Tinkisso River
1012:
1010:
1009:distributaries
1000:
999:
997:
996:
991:
986:
981:
976:
970:
968:
964:
963:
956:
954:
952:
951:
946:
941:
936:
931:
925:
923:
919:
918:
913:
911:
910:
903:
896:
888:
882:
881:
866:
859:
858:External links
856:
855:
854:
834:
816:
765:
747:(4): 704–712,
736:
721:
699:
666:
663:
661:
660:
619:
607:
581:
558:
519:
483:
474:
462:
443:
439:Meierotto 2009
431:
391:
379:
364:
352:
340:
328:
305:
292:
240:
238:
235:
229:
223:
222:
221:
220:
219:
190:
187:
158:
155:
123:drainage basin
94:
91:
47:
41:
37:
36:
35:
13:
10:
9:
6:
4:
3:
2:
1341:
1330:
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1207:
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1200:
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1190:
1187:
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1079:
1077:
1074:
1072:
1069:
1067:
1066:Anambra River
1064:
1062:
1059:
1057:
1054:
1052:
1049:
1047:
1044:
1042:
1041:Alibori River
1039:
1037:
1034:
1032:
1029:
1027:
1024:
1022:
1019:
1017:
1014:
1013:
1011:
1006:
1003:Tributaries (
1001:
995:
992:
990:
987:
985:
982:
980:
977:
975:
972:
971:
969:
965:
960:
950:
947:
945:
942:
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937:
935:
932:
930:
927:
926:
924:
920:
916:
909:
904:
902:
897:
895:
890:
889:
886:
878:on 2013-02-13
877:
873:
872:
867:
865:
862:
861:
857:
845:on 2011-07-24
841:
837:
835:90-807150-6-9
831:
824:
823:
817:
802:
798:
794:
790:
786:
782:
778:
771:
766:
762:
758:
754:
750:
746:
742:
737:
729:
728:
722:
718:on 2011-07-26
714:
707:
706:
700:
696:
692:
688:
684:
680:
676:
675:
669:
668:
664:
657:
656:Golitzen 2005
653:
652:Descroix 2009
649:
637:on 2016-03-03
636:
632:
631:
623:
620:
617:, p. 38.
616:
611:
608:
593:
592:
585:
582:
570:
569:
562:
559:
554:
523:
520:
509:on 2012-03-03
505:
498:
497:
490:
488:
484:
478:
475:
471:
466:
463:
455:
454:
447:
444:
440:
435:
432:
426:
395:
392:
388:
387:Golitzen 2005
383:
380:
376:
371:
369:
365:
361:
356:
353:
349:
344:
341:
337:
336:Golitzen 2005
332:
329:
323:
322:
315:
309:
306:
302:
296:
293:
289:
285:
279:
248:
246:
242:
236:
218:
216:
210:
208:
204:
203:
197:
188:
186:
182:
180:
176:
172:
168:
164:
156:
154:
151:
145:
143:
139:
135:
130:
126:
124:
120:
116:
115:CĂ´te d'Ivoire
112:
108:
104:
100:
92:
90:
88:
84:
80:
76:
72:
68:
64:
60:
56:
40:
31:
26:
18:
1276:
1056:Kaduna River
1046:Sokoto River
1036:Mekrou River
1030:
979:Middle Niger
876:the original
870:
847:, retrieved
840:the original
821:
808:, retrieved
801:the original
780:
776:
744:
740:
726:
713:the original
704:
678:
672:
639:, retrieved
635:the original
629:
622:
610:
599:, retrieved
590:
584:
573:, retrieved
567:
561:
522:
511:, retrieved
504:the original
495:
477:
465:
452:
446:
434:
394:
382:
355:
343:
331:
320:
308:
295:
211:
206:
200:
192:
183:
160:
146:
141:
131:
127:
96:
54:
52:
38:
1298: /
1184:Markala Dam
1153:Kainji Lake
1081:Brass River
1061:Benue River
994:Niger Delta
989:Lower Niger
915:Niger River
548: /
420: /
273: /
107:Bagoé River
63:Niger River
1319:Bani River
1313:Categories
1199:Kainji Dam
1189:Gao Bridge
1051:Sota River
1031:Bani River
1026:Milo River
849:2011-02-14
665:References
533:13°47′54″N
405:13°16′39″N
299:Data from
258:13°12′50″N
189:Djenné Dam
163:floodplain
71:confluence
55:Bani River
1249:disasters
1204:Jebba Dam
1076:Nun River
922:Countries
536:4°31′54″W
408:5°17′34″W
375:Mahé 2009
360:Mahé 2009
261:5°54′11″W
215:Koulikoro
150:Koulikoro
136:north of
111:Boundiali
93:Geography
59:tributary
1158:Lac Debo
1117:Timbuktu
967:Sections
797:19008033
157:Talo Dam
103:Bougouni
1283:14°29′N
1137:Onitsha
1097:Siguiri
949:Nigeria
749:Bibcode
683:Bibcode
207:bourgou
119:Sikasso
99:Odienné
73:of the
61:of the
1286:4°12′W
1132:Lokoja
1127:Niamey
1102:Bamako
1090:Cities
1007:) and
929:Guinea
832:
810:23 Apr
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