652:
427:
714:
454:
462:
49:
606:
232:
582:, a large natural riverine lake that is part of Pool 4 of the Upper Mississippi River. National and regional efforts are addressing these problems, but nutrient impairment problems are occurring elsewhere in the Upper Mississippi River as well, particularly in off-channel portions. Excessive nutrients contribute to thick floating mats of filamentous
590:
that have a pronounced negative impact on light penetration and may threaten the growth and persistence of submerged aquatic vegetation that is important for fish and aquatic life, including waterfowl. Efforts to control nutrients from point and non-point sources in the basin have aimed to provide
559:
Although the river is much cleaner than it was in recent decades, water quality is still a priority concern. Agricultural runoff, including sediment, excessive nutrients, (particularly nitrogen and phosphorus), and chemicals from agricultural and industrial sources continue to threaten Upper
689:
629:
and barge transportation industries have lobbied in the late 20th and early 21st centuries for a multibillion-dollar project to upgrade the aging lock and dam system. Some environmental groups and advocates of budgetary restraint argue that the project lacks economic justification.
560:
Mississippi River aquatic resources. In addition new threats continue to emerge such as personal care items including pharmaceuticals and endocrine-disrupting chemicals. The five states bordering the Upper
Mississippi River are working together to address water quality issues.
668:
531:
The Upper
Mississippi provides habitat for more than 125 fish species and 30 species of freshwater mussels. Three national wildlife refuges along the river cover a total of 465 square kilometers (285,000 ac). The largest of them, the
696:
694:
691:
690:
695:
361:
with high limestone bluffs carved by the waterfall. Upstream of the waterfall the land slopes gently to rivers edge. Downstream of downtown St. Paul the river enters its wide preglacial valley. The states of
675:
673:
670:
669:
674:
693:
533:
672:
426:
1577:
600:
2148:, a collection of images of the Mississippi Valley along the Iowa/Illinois border, from the 1860s through the 1950s. Images are from regional library special collections.
385:
is the
National Park Service site dedicated to protecting and interpreting the Mississippi River itself. The other two National Park Service sites along the river are:
1572:
433:
236:
382:
509:
315:
2050:
692:
1993:
671:
1968:
841:
722:
637:
2080:
420:
transportation. The dams regulate water levels for the Upper River and play a major part in regulating levels on the Lower
Mississippi.
1884:
564:
651:
1729:
Hallberg, G. R. (1986). "Pre-Wisconsin glacial stratigraphy of the central plains region in Iowa, Nebraska, Kansas, and
Missouri".
552:. The refuge consists of blufflands, marshes, bottomland forest, islands, channels, backwater lakes and sloughs. It is part of the
1854:
998:
626:
386:
358:
115:
469:
441:
633:
Each lock and dam complex creates a pool upstream of it. There are 29 locks on the Upper
Mississippi maintained by the
31:
655:
622:
567:
planned to test the entire 650-mile length (1,050 km) of the river within the state for the first time in 2024.
337:
left unglaciated at that ice age's height, hence not smoothed out or covered over by previous geological processes.
2161:
2118:"Big Price—Little Benefit: Proposed Locks on the Upper Mississippi and Illinois Rivers are not Economically Viable"
1519:
513:
390:
944:
971:
713:
275:
625:
down to Cairo, has been made suitable for commercial navigation with a depth of 2.75 meters (9 ft). The
374:, along with the federal government, have preserved certain areas of the land along this reach of the river.
1268:
517:
311:
2058:
1940:"Upper Mississippi River Nutrient Monitoring, Occurrence, and Local Impacts: A Clean Water Act Perspective"
1541:
1025:
2001:
1457:
1241:
644:
upstream to Chain of Rocks downstream. The locks provide a collective 123 meters (404 ft) of lift.
617:, barges, and other vessels to transit the dams. Approximately 1350 kilometers (850 mi), from the
545:
416:
in the 1930s, and most were completed by 1940. A primary reason for damming the river is to facilitate
378:
2024:
1773:
1738:
1516:
1511:
1430:
1295:
404:
Unlike the Lower
Mississippi, much of the upper river is a series of pools created by a system of 29
291:
1546:
1489:
1462:
1435:
1408:
1381:
1354:
1327:
1322:
1300:
1273:
1246:
1219:
1192:
1165:
1138:
1111:
976:
863:
814:
787:
742:
738:
734:
730:
726:
641:
571:
485:
307:
54:
1892:
453:
1484:
1084:
1079:
1057:
1030:
1003:
949:
922:
895:
868:
679:
618:
553:
465:
2091:
437:
346:
247:
1915:"2007 Water Quality Program Report- Protecting Water Quality through Interstate Cooperation"
1781:
1764:
Richmond, G. (1986). "Summation of quaternary glaciations in the United States of
America".
1746:
1403:
1376:
1106:
1052:
890:
322:. The Upper Mississippi River valley likely originated as an ice-marginal stream during the
461:
48:
917:
537:
525:
521:
505:
405:
319:
295:
1799:
1654:
1777:
1742:
286:
In terms of geologic and hydrographic history, the Upper
Mississippi east and south of
17:
1862:
1704:
1214:
1160:
575:
501:
497:
330:
303:
263:
2155:
1785:
1750:
1604:
1187:
1133:
609:
The inland and intracoastal waterways, with the Upper
Mississippi highlighted in red.
413:
334:
323:
287:
267:
259:
1349:
492:, the alluvial floodplain is approximately 80 kilometers (50 mi) wide. Major
394:
299:
836:
809:
782:
605:
493:
350:
231:
161:
97:
2117:
579:
481:
271:
1629:
130:
117:
1939:
634:
541:
477:
398:
367:
363:
354:
251:
176:
101:
484:
is between 1.5 and 5 kilometers (between 1 and 3 mi) wide. South of
614:
587:
549:
489:
255:
180:
2051:"Operation & Maintenance of Navigation Installations (OMNI) Reports"
1605:"Mississippi River | History, Physical Features, Culture, & Facts"
1998:
Mississippi River Basin Nutrients Science Workshop, October 4–6, 2005
1969:"MPCA testing the entirety of the Mississippi River within Minnesota"
659:
1994:"Nutrient Impairment Identification in the Upper Mississippi River"
2145:
712:
687:
666:
650:
583:
570:
There is general agreement that nutrients are contributing to the
460:
452:
417:
230:
2048:
There is a Lock 5 as well as a Lock 5A, and there is no Lock 23.
1829:
1679:
409:
371:
536:, is over 420 kilometers (260 mi) long, reaching from the
1914:
1709:
EPA: Mississippi River Basin & Gulf of Mexico Hypoxia
534:
Upper Mississippi River National Wildlife and Fish Refuge
1578:
List of locks and dams of the Upper Mississippi River
601:
List of locks and dams of the Upper Mississippi River
266:. Historically, it may refer to the area above the
215:
207:
195:
187:
170:
160:
146:
107:
91:
83:
74:
66:
61:
41:
1655:"UMESC - About the Upper Mississippi River System"
1630:"General Information about the Mississippi River"
1804:USGS Upper Midwest Environmental Sciences Center
1573:List of crossings of the Upper Mississippi River
262:, at the confluence of its main tributary, the
237:Mississippi River Bridge (La Crosse, Wisconsin)
2146:Upper Mississippi Valley Digital Image Archive
1889:Upper Mississippi River Conservation Committee
1859:Friends of the Upper Mississippi River Refuges
383:Mississippi National River and Recreation Area
1705:"Background on Upper Mississippi River Basin"
381:sites along the Upper Mississippi River. The
8:
1824:
1822:
1820:
1599:
1597:
1595:
1593:
2081:"U.S. Waterway System Facts, December 2005"
496:to the Upper Mississippi River include the
1800:"About the Upper Mississippi River System"
221:5,796 m/s (204,700 cu ft/s)
1947:Upper Mississippi River Basin Association
1919:Upper Mississippi River Basin Association
1834:Upper Mississippi River Basin Association
1684:Upper Mississippi River Basin Association
357:) downstream to St. Paul, Minnesota is a
199:490,000 km (190,000 sq mi)
27:Upstream portion of the Mississippi river
752:
604:
476:On the upper reaches near the Minnesota-
306:. The collapse of ice dams holding back
1967:Hassanzadeh, Erin (September 2, 2024).
1589:
717:Upper Mississippi locks expansion study
2023:Marcia Zarley Taylor (March 8, 2006).
1885:"Issues and Challenges- Water Quality"
38:
412:. The structures were authorized by
7:
183:(flows into the Middle Mississippi)
565:Minnesota Pollution Control Agency
436:Upper Mississippi Valley close to
302:to join the world's oceans at the
25:
345:The Upper Mississippi from below
53:The Upper Mississippi River near
623:Mile 858, Minneapolis, Minnesota
425:
290:is a portion of the now-extinct
47:
387:Effigy Mounds National Monument
294:which carved the valley of the
2116:Walker, Brad (February 2010).
2055:Rock Island District Engineers
700:Barge on the Upper Mississippi
109: • coordinates
1:
709:Expansion proposals for locks
314:carved out the Dalles of the
75:Physical characteristics
2088:USACE Navigation Data Center
1786:10.1016/0277-3791(86)90184-8
1751:10.1016/0277-3791(86)90169-1
815:Lower St. Anthony Falls Lock
788:Upper St. Anthony Falls Lock
725:has studied expanding locks
148: • elevation
32:Upper Mississippi Valley AVA
2123:. Nicollet Island Coalition
1559:
1556:
1553:
1550:
1532:
1529:
1526:
1523:
1502:
1499:
1496:
1493:
1475:
1472:
1469:
1466:
1448:
1445:
1442:
1439:
1421:
1418:
1415:
1412:
1394:
1391:
1388:
1385:
1367:
1364:
1361:
1358:
1340:
1337:
1334:
1331:
1313:
1310:
1307:
1304:
1286:
1283:
1280:
1277:
1259:
1256:
1253:
1250:
1232:
1229:
1226:
1223:
1205:
1202:
1199:
1196:
1178:
1175:
1172:
1169:
1151:
1148:
1145:
1142:
1124:
1121:
1118:
1115:
1097:
1094:
1091:
1088:
1070:
1067:
1064:
1061:
1043:
1040:
1037:
1034:
1016:
1013:
1010:
1007:
989:
986:
983:
980:
962:
959:
956:
953:
935:
932:
929:
926:
908:
905:
902:
899:
881:
878:
875:
872:
854:
851:
848:
845:
827:
824:
821:
818:
800:
797:
794:
791:
172: • location
93: • location
2178:
1766:Quaternary Science Reviews
1731:Quaternary Science Reviews
1634:U.S. National Park Service
745:on the Upper Mississippi.
598:
391:Gateway Arch National Park
270:, above the confluence of
217: • average
191:1,300 miles (2092.147 km)
152:450 m (1,480 ft)
29:
298:, permitting the immense
225:
203:
156:
79:
46:
30:For the wine region, see
2025:"River debate continues"
572:Gulf of Mexico dead zone
18:Upper Mississippi Valley
1680:"River and Basin Facts"
1609:Encyclopedia Britannica
749:List of pools and locks
723:Army Corps of Engineers
642:Upper St. Anthony Falls
613:Navigation locks allow
312:Glacial Lake Grantsburg
244:Upper Mississippi River
235:Barge going under the
42:Upper Mississippi River
718:
701:
683:
662:
610:
473:
458:
246:is the portion of the
239:
716:
699:
678:
654:
608:
591:additional benefits.
464:
456:
379:National Park Service
234:
480:border, the river's
300:Glacial Lake Agassiz
292:Glacial River Warren
2004:on January 17, 2008
1895:on October 15, 2007
1855:"About the refuges"
1778:1986QSRv....5..183R
1743:1986QSRv....5...11H
324:Pre-Illinoian Stage
308:Glacial Lake Duluth
127: /
55:Harpers Ferry, Iowa
1659:www.umesc.usgs.gov
719:
702:
684:
663:
638:Corps of Engineers
619:head of navigation
611:
554:Mississippi Flyway
474:
459:
240:
2162:Mississippi River
1564:
1563:
945:Minnesota City MN
706:
705:
697:
676:
472:in the background
438:Winona, Minnesota
347:St. Anthony Falls
248:Mississippi River
229:
228:
131:47.253°N 95.212°W
16:(Redirected from
2169:
2133:
2132:
2130:
2128:
2122:
2113:
2107:
2106:
2104:
2102:
2096:
2090:. Archived from
2085:
2077:
2071:
2070:
2068:
2066:
2061:on July 19, 2006
2057:. Archived from
2046:
2040:
2039:
2037:
2035:
2020:
2014:
2013:
2011:
2009:
2000:. Archived from
1990:
1984:
1983:
1981:
1979:
1964:
1958:
1957:
1955:
1953:
1944:
1936:
1930:
1929:
1927:
1925:
1911:
1905:
1904:
1902:
1900:
1891:. Archived from
1881:
1875:
1874:
1872:
1870:
1865:on April 3, 2005
1861:. Archived from
1851:
1845:
1844:
1842:
1840:
1826:
1815:
1814:
1812:
1810:
1796:
1790:
1789:
1761:
1755:
1754:
1726:
1720:
1719:
1717:
1715:
1701:
1695:
1694:
1692:
1690:
1676:
1670:
1669:
1667:
1665:
1651:
1645:
1644:
1642:
1640:
1626:
1620:
1619:
1617:
1615:
1601:
1269:Illinois City IL
972:Fountain City WI
753:
698:
677:
656:La Crosse County
647:
646:
457:Locks and dam 15
429:
377:There are three
333:is a portion of
218:
149:
142:
141:
139:
138:
137:
132:
128:
125:
124:
123:
120:
110:
94:
51:
39:
21:
2177:
2176:
2172:
2171:
2170:
2168:
2167:
2166:
2152:
2151:
2142:
2137:
2136:
2126:
2124:
2120:
2115:
2114:
2110:
2100:
2098:
2097:on July 3, 2007
2094:
2083:
2079:
2078:
2074:
2064:
2062:
2049:
2047:
2043:
2033:
2031:
2022:
2021:
2017:
2007:
2005:
1992:
1991:
1987:
1977:
1975:
1966:
1965:
1961:
1951:
1949:
1942:
1938:
1937:
1933:
1923:
1921:
1913:
1912:
1908:
1898:
1896:
1883:
1882:
1878:
1868:
1866:
1853:
1852:
1848:
1838:
1836:
1828:
1827:
1818:
1808:
1806:
1798:
1797:
1793:
1763:
1762:
1758:
1728:
1727:
1723:
1713:
1711:
1703:
1702:
1698:
1688:
1686:
1678:
1677:
1673:
1663:
1661:
1653:
1652:
1648:
1638:
1636:
1628:
1627:
1623:
1613:
1611:
1603:
1602:
1591:
1586:
1569:
1542:Granite City IL
751:
711:
688:
667:
603:
597:
451:
446:
445:
444:
435:
430:
343:
341:Characteristics
320:Interstate Park
316:St. Croix River
296:Minnesota River
284:
216:
173:
147:
136:47.253; -95.212
135:
133:
129:
126:
121:
118:
116:
114:
113:
108:
92:
57:
35:
28:
23:
22:
15:
12:
11:
5:
2175:
2173:
2165:
2164:
2154:
2153:
2150:
2149:
2141:
2140:External links
2138:
2135:
2134:
2108:
2072:
2041:
2015:
1985:
1959:
1931:
1906:
1876:
1846:
1816:
1791:
1756:
1721:
1696:
1671:
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1621:
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1580:
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1549:
1544:
1539:
1535:
1534:
1531:
1528:
1525:
1522:
1514:
1509:
1508:Mel Price Pool
1505:
1504:
1501:
1498:
1495:
1492:
1487:
1482:
1478:
1477:
1474:
1471:
1468:
1465:
1460:
1458:Clarksville MO
1455:
1451:
1450:
1447:
1444:
1441:
1438:
1433:
1428:
1424:
1423:
1420:
1417:
1414:
1411:
1406:
1401:
1397:
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1390:
1387:
1384:
1379:
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1303:
1298:
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1285:
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1279:
1276:
1271:
1266:
1262:
1261:
1258:
1255:
1252:
1249:
1244:
1242:Rock Island IL
1239:
1235:
1234:
1231:
1228:
1225:
1222:
1217:
1212:
1208:
1207:
1204:
1201:
1198:
1195:
1190:
1185:
1181:
1180:
1177:
1174:
1171:
1168:
1163:
1158:
1154:
1153:
1150:
1147:
1144:
1141:
1136:
1131:
1127:
1126:
1123:
1120:
1117:
1114:
1109:
1104:
1100:
1099:
1096:
1093:
1090:
1087:
1082:
1077:
1073:
1072:
1069:
1066:
1063:
1060:
1055:
1050:
1046:
1045:
1042:
1039:
1036:
1033:
1028:
1026:La Crescent MN
1023:
1019:
1018:
1015:
1012:
1009:
1006:
1001:
999:Trempealeau WI
996:
992:
991:
988:
985:
982:
979:
974:
969:
965:
964:
961:
958:
955:
952:
947:
942:
938:
937:
934:
931:
928:
925:
920:
915:
911:
910:
907:
904:
901:
898:
893:
888:
884:
883:
880:
877:
874:
871:
866:
861:
857:
856:
853:
850:
847:
844:
839:
837:Minneapolis MN
834:
830:
829:
826:
823:
820:
817:
812:
810:Minneapolis MN
807:
803:
802:
799:
796:
793:
790:
785:
783:Minneapolis MN
780:
776:
775:
772:
769:
766:
763:
760:
757:
750:
747:
710:
707:
704:
703:
685:
680:Lock and Dam 6
664:
599:Main article:
596:
593:
576:eutrophication
466:Lock and dam 7
450:
447:
432:
431:
424:
423:
422:
342:
339:
331:Driftless Area
304:Gulf of Mexico
283:
280:
276:Cape Girardeau
264:Missouri River
227:
226:
223:
222:
219:
213:
212:
209:
205:
204:
201:
200:
197:
193:
192:
189:
185:
184:
174:
171:
168:
167:
164:
158:
157:
154:
153:
150:
144:
143:
111:
105:
104:
95:
89:
88:
85:
81:
80:
77:
76:
72:
71:
68:
64:
63:
59:
58:
52:
44:
43:
26:
24:
14:
13:
10:
9:
6:
4:
3:
2:
2174:
2163:
2160:
2159:
2157:
2147:
2144:
2143:
2139:
2119:
2112:
2109:
2093:
2089:
2082:
2076:
2073:
2060:
2056:
2052:
2045:
2042:
2030:
2026:
2019:
2016:
2003:
1999:
1995:
1989:
1986:
1974:
1973:CBS Minnesota
1970:
1963:
1960:
1948:
1941:
1935:
1932:
1920:
1916:
1910:
1907:
1894:
1890:
1886:
1880:
1877:
1864:
1860:
1856:
1850:
1847:
1835:
1831:
1830:"Basin Facts"
1825:
1823:
1821:
1817:
1805:
1801:
1795:
1792:
1787:
1783:
1779:
1775:
1771:
1767:
1760:
1757:
1752:
1748:
1744:
1740:
1736:
1732:
1725:
1722:
1710:
1706:
1700:
1697:
1685:
1681:
1675:
1672:
1660:
1656:
1650:
1647:
1635:
1631:
1625:
1622:
1610:
1606:
1600:
1598:
1596:
1594:
1590:
1583:
1579:
1576:
1574:
1571:
1570:
1566:
1548:
1545:
1543:
1540:
1537:
1536:
1521:
1518:
1515:
1513:
1512:East Alton IL
1510:
1507:
1506:
1491:
1488:
1486:
1483:
1480:
1479:
1464:
1461:
1459:
1456:
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1452:
1437:
1434:
1432:
1431:New London MO
1429:
1426:
1425:
1410:
1407:
1405:
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1399:
1398:
1383:
1380:
1378:
1375:
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1296:New Boston IL
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1107:Guttenberg IA
1105:
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1086:
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724:
715:
708:
686:
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665:
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631:
628:
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594:
592:
589:
585:
581:
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568:
566:
561:
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555:
551:
547:
544:area down to
543:
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529:
527:
523:
519:
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511:
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455:
448:
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428:
421:
419:
415:
411:
407:
402:
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396:
393:(home to the
392:
388:
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348:
340:
338:
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335:North America
332:
327:
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321:
317:
313:
309:
305:
301:
297:
293:
289:
288:Fort Snelling
281:
279:
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273:
269:
268:Arkansas Post
265:
261:
260:United States
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60:
56:
50:
45:
40:
37:
33:
19:
2125:. Retrieved
2111:
2099:. Retrieved
2092:the original
2087:
2075:
2063:. Retrieved
2059:the original
2054:
2044:
2032:. Retrieved
2028:
2018:
2006:. Retrieved
2002:the original
1997:
1988:
1978:September 3,
1976:. Retrieved
1972:
1962:
1950:. Retrieved
1946:
1934:
1922:. Retrieved
1918:
1909:
1897:. Retrieved
1893:the original
1888:
1879:
1867:. Retrieved
1863:the original
1858:
1849:
1837:. Retrieved
1833:
1807:. Retrieved
1803:
1794:
1769:
1765:
1759:
1734:
1730:
1724:
1712:. Retrieved
1708:
1699:
1687:. Retrieved
1683:
1674:
1662:. Retrieved
1658:
1649:
1637:. Retrieved
1633:
1624:
1612:. Retrieved
1608:
1517:Melvin Price
1323:Gladstone IL
720:
632:
612:
578:problems in
569:
562:
558:
530:
475:
403:
395:Gateway Arch
376:
344:
328:
285:
250:upstream of
243:
241:
36:
1772:: 183–196.
1485:Winfield MO
1215:LeClaire IA
1161:Bellevue IA
864:Hastings MN
765:Mile marker
627:agriculture
546:Rock Island
494:tributaries
470:I-90 bridge
442:Kings Bluff
351:Minneapolis
274:, or above
134: /
98:Lake Itasca
70:US, Canada
1584:References
1188:Clinton IA
1134:Dubuque IA
1080:Eastman WI
682:time lapse
595:Navigation
580:Lake Pepin
482:floodplain
272:Ohio River
196:Basin size
122:95°12′43″W
119:47°15′11″N
2101:April 27,
2065:April 27,
2034:March 13,
2008:April 11,
1952:March 21,
1924:April 11,
1899:April 11,
1809:March 13,
1737:: 11–15.
1404:Quincy IL
1377:Canton MO
1350:Keokuk IA
806:LSAF Pool
779:USAF Pool
635:U.S. Army
588:duckweeds
542:Wisconsin
526:Kaskaskia
522:Wisconsin
510:St. Croix
506:Minnesota
486:St. Louis
478:Wisconsin
399:St. Louis
368:Wisconsin
364:Minnesota
355:Minnesota
252:St. Louis
208:Discharge
177:St. Louis
102:Minnesota
2156:Category
2127:July 13,
1869:April 1,
1839:April 1,
1714:April 1,
1689:April 7,
1639:April 1,
1567:See also
1053:Genoa WI
891:Welch MN
771:Distance
759:Locality
615:towboats
550:Illinois
528:Rivers.
514:Chippewa
502:Illinois
498:Missouri
490:Missouri
414:Congress
389:and the
256:Missouri
181:Missouri
62:Location
1774:Bibcode
1739:Bibcode
1664:June 4,
1614:June 3,
1547:Lock 27
1538:Pool 27
1490:Lock 25
1481:Pool 25
1463:Lock 24
1454:Pool 24
1436:Lock 22
1427:Pool 22
1409:Lock 21
1400:Pool 21
1382:Lock 20
1373:Pool 20
1355:Lock 19
1346:Pool 19
1328:Lock 18
1319:Pool 18
1301:Lock 17
1292:Pool 17
1274:Lock 16
1265:Pool 16
1247:Lock 15
1238:Pool 15
1220:Lock 14
1211:Pool 14
1193:Lock 13
1184:Pool 13
1166:Lock 12
1157:Pool 12
1139:Lock 11
1130:Pool 11
1112:Lock 10
1103:Pool 10
977:Lock 5A
968:Pool 5A
918:Alma WI
801:
574:and to
449:Ecology
282:History
67:Country
1085:Lock 9
1076:Pool 9
1058:Lock 8
1049:Pool 8
1031:Lock 7
1022:Pool 7
1004:Lock 6
995:Pool 6
950:Lock 5
941:Pool 5
923:Lock 4
914:Pool 4
896:Lock 3
887:Pool 3
869:Lock 2
860:Pool 2
842:Lock 1
833:Pool 1
798:
741:, and
660:harbor
658:barge
640:—from
524:, and
211:
188:Length
166:
87:
84:Source
2121:(PDF)
2095:(PDF)
2084:(PDF)
2029:AgWeb
1943:(PDF)
774:(km)
584:algae
518:Black
468:with
418:barge
406:locks
359:gorge
162:Mouth
2129:2017
2103:2006
2067:2006
2036:2006
2010:2008
1980:2024
1954:2012
1926:2008
1901:2008
1871:2006
1841:2006
1811:2006
1716:2006
1691:2009
1666:2020
1641:2006
1616:2020
1520:Lock
1092:1043
1065:1093
1038:1132
1011:1150
984:1172
957:1188
930:1212
903:1283
876:1312
849:1365
822:1373
795:1375
768:(km)
762:Lock
756:Pool
721:The
563:The
538:Alma
440:and
410:dams
408:and
372:Iowa
370:and
329:The
310:and
242:The
1782:doi
1747:doi
1560:26
1554:298
1551:185
1533:64
1527:324
1524:201
1503:52
1497:388
1494:241
1476:45
1470:440
1467:273
1449:39
1443:485
1440:301
1422:29
1416:523
1413:325
1395:34
1389:552
1386:343
1368:74
1362:586
1359:364
1341:43
1335:660
1332:410
1314:32
1308:704
1305:437
1287:42
1281:736
1278:457
1260:16
1254:778
1251:483
1233:47
1227:794
1224:493
1206:56
1200:840
1197:522
1179:42
1173:897
1170:557
1152:52
1146:939
1143:583
1125:53
1119:990
1116:615
1098:50
1089:648
1071:39
1062:679
1044:18
1035:703
1017:23
1008:714
990:16
981:728
963:24
954:738
936:71
927:753
909:29
900:797
882:53
873:815
846:848
819:853
792:854
621:in
586:or
401:).
397:in
318:at
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2027:.
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1971:.
1945:.
1917:.
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1780:.
1768:.
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1592:^
1557:16
1530:40
1500:32
1473:28
1446:24
1419:18
1392:21
1365:46
1338:27
1311:20
1284:26
1257:10
1230:29
1203:35
1176:26
1149:32
1122:33
1095:31
1068:24
1041:11
1014:14
987:10
960:15
933:44
906:18
879:33
855:8
828:2
743:25
739:24
737:,
735:22
733:,
731:21
729:,
727:20
556:.
548:,
540:,
520:,
516:,
512:,
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1982:.
1956:.
1928:.
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1749::
1741::
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1668:.
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852:5
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