411 REFERENCE · Wikipedia
2011 Mississippi River floods
Reference material by Wikipedia contributors. This retains its source identity and is not 411 news reporting.
2011 major floods in the United States
February 2025
September 2023
2011 Mississippi River floods USfloodmap8May2011.png There were 100 populated locations experiencing major or moderate flooding on May 8, 2011.Source: National Weather Service May 4, 2011 to June 20, 2011 Mississippi River Valley, United States About 20 direct348 indirect from preceding stormsCBS News https://www.cbsnews.com/news/tornado-victims-seek-comfort-in-sunday-services/ Tornado victims seek comfort in Sunday services May 1, 2011 May 1, 2011National Weather Service in Little Rock, Arkansas National Oceanic and Atmospheric Administration April 27, 2011 April 28, 2011 Heavy Rain/Severe Weather on April 23–27, 2011 http://www.srh.noaa.gov/lzk/?n=hydro0411.htmCNN http://www.cnn.com/2011/US/05/01/severe.weather/index.html?hpt=T2/ Top federal officials tour, promise help to tornado-ravaged South May 1, 2011 May 1, 2011 US$2 to 4 billionMasters Jeffrey Mississippi River flood of 2011 already a $2 billion disaster http://www.wunderground.com/blog/JeffMasters/comment.html?entrynum=1800 Weather Underground Jeff Masters' WunderBlog 12 May 2011Strauss Gary Mississippi flood damages could reach billions http://tucsoncitizen.com/usa-today-news/2011/05/11/mississippi-flood-damages-could-reach-billions/ 12 May 2011 Tucson Citizen May 11, 2011 Marisol BelloDecember 2015
Major floods along the Mississippi River in April and May 2011 were among the largest and most damaging recorded along the U.S. waterway in the past century, comparable in extent to the Great Mississippi Flood of 1927 and Great Flood of 1993. In April 2011, two large storm systems deposited record levels of rainfall on the Mississippi River drainage basin. When that additional water combined with the springtime snowmelt, the river and many of its tributaries began to swell to record levels by the beginning of May. Flooding occurred in Illinois, Missouri, Kentucky, Tennessee, Arkansas, Mississippi, and Louisiana.
U.S. President Barack Obama declared the western counties of Kentucky, Tennessee, and Mississippi federal disaster areas.http://blog.memphisdailynews.com/?p=2209 Obama Signs Tennessee Disaster Declaration Blog.memphisdailynews.com 2011-05-09 2011-05-16 https://web.archive.org/web/20110615111956/http://blog.memphisdailynews.com/?p=2209 15 June 2011 dead For the first time in 37 years, the Morganza Spillway was opened on May 14, deliberately flooding 4600 sqmi sqkm of rural Louisiana to save most of Baton Rouge and New Orleans."Rural Louisiana flooded to save New Orleans" (CBS News/Associated Press) May 14, 2011
Fourteen people were killed in Arkansas,http://www.arkansasonline.com/news/2011/apr/30/river-floods-100-homes-states-death-toll--20110430/ River floods 100 homes; state's death toll at 14 Arkansasonline.com 2011-04-30 2011-05-16 with 348 killed across seven states in the preceding storms. Thousands of homes were ordered evacuated, including over 1,300 in Memphis,https://www.bbc.co.uk/news/world-us-canada-13364606 BBC News - Mississippi flood: Southern states brace for crest Bbc.co.uk 2011-05-11 2011-05-16 https://web.archive.org/web/20110513080043/http://www.bbc.co.uk/news/world-us-canada-13364606 13 May 2011 live and more than 24,500 in Louisiana and Mississippi,http://www.timesunion.com/news/article/Gov-Jindal-Morganza-Spillway-opening-by-Saturday-1378440.php https://archive.today/20120913151259/http://www.timesunion.com/news/article/Gov-Jindal-Morganza-Spillway-opening-by-Saturday-1378440.php dead 2012-09-13 Gov Jindal: Morganza Spillway opening by Saturday Times Union 2011-05-12 2011-05-16 "Flooding begins to 'wrap arms' around Memphis" May 7, 2011 (Toronto Sun) though some people disregarded mandatory evacuation orders.Paul Rioux (May 16, 2011) "Many in way of diverted Mississippi River floodwaters ignore evacuation order" The Times-Picayune The flood crested in Memphis on May 10 and artificially crested in southern Louisiana on May 15, a week earlier than it would have if spillways had not been opened.https://www.csmonitor.com/USA/2011/0508/Memphis-and-Baton-Rouge-brace-for-record-breaking-Mississippi-flood Memphis and Baton Rouge brace for record-breaking Mississippi flood Christian Science Monitor 2011-05-08 2011-05-16 https://web.archive.org/web/20110524191314/http://www.csmonitor.com/USA/2011/0508/Memphis-and-Baton-Rouge-brace-for-record-breaking-Mississippi-flood 24 May 2011 live The United States Army Corps of Engineers stated that an area in Louisiana between Simmesport and Baton Rouge was expected to be inundated with 20 - 30 ft of water.Estimated Inundation (US Army Corps of Engineers) Baton Rouge, New Orleans, and many other river towns were threatened,"Mississippi River rise has River Parishes residents worried" NOLA.com May 12, 2011"'Sacrificial' towns prepare for deliberate flooding" MSNBC May 12, 2011 but officials stressed that they should be able to avoid catastrophic flooding."Officials try to calm fears of New Orleans flooding from Mississippi River" https://web.archive.org/web/20110515153637/http://www.wwltv.com/news/river-watch/Officials-try-to-calm-fears-of-New-Orleans-flooding-from-Mississippi-River-121740599.html May 15, 2011 WWL TV May 12, 2011
thumb|Rainfall totals within the United States for the week ending April 29.
thumb|U.S. Weather Service map showing number of inches of precipitation above/below normal year to date at June 18, 2011. The map shows that significantly large amounts of precipitation in the Ohio River basin that resulted in the worst of the flooding being below confluence of the Ohio and Mississippi. Louisiana, which experienced the worst of the flood was actually in a major drought. Heavy precipitation in the head waters of the Missouri River in Montana resulted in the 2011 Missouri River Floods which began to affect the Mississippi in late June (although to a lesser degree than the April flood). Significantly lower than normal rain in eastern Arizona led to the Wallow Fire in May/June.
From April 14–16, the storm system responsible for one of the largest tornado outbreaks in U.S. history also produced large amounts of rainfall across the southern and midwestern United States. Two more storm systems, each with heavy rain and tornadoes, hit in the third week of April. In the fourth week of April, from April 25–28, another, even more extensive and deadly storm system passed through the Mississippi Valley dumping more rainfall resulting in deadly flash floods.This latter storm produced over 250 tornadoes, the deadliest tornado outbreak since 1936, causing an estimated $11 billion dollars in damage. The unprecedented extensive rainfall from these four storms, combined with springtime snow melt from the Upper Midwest, created the perfect situation for a 500-year flood along the Mississippi.
Flood stages and effects by state
As flood waters proceeded down the Lower Mississippi from the St. Louis area (where the Missouri River and the Mississippi River converge), they affected Missouri and Illinois, then Tennessee, Arkansas, Mississippi, and Louisiana.
Missouri and Illinois
On May 3, using the planned procedures for the Birds Point-New Madrid Floodway, the Corps of Engineers blasted a two-mile (3 km) hole in the levee protecting the floodway, flooding 130000 acre km2 of farmland in Mississippi County, Missouri, in an effort to save the town of Cairo, Illinois and the rest of the levee system, from record-breaking flood waters. Levee breach lowers river, but record flooding still forecast http://www.cnn.com/2011/US/05/03/missouri.levee.breach/index.html?hpt=Sbin 2011-05-03 CNN May 3, 2011 The breach displaced around 200 residents of Missouri's Mississippi and New Madrid counties, who were forced to evacuate after a court approved the plan to breach the levee.Court approves breaching of Birds Point levee http://www.ksdk.com/rss/article/257042/3/Court-approves-breaching-of-Birds-Point-Levee KSDK Cairo, Ill. 2011-05-06 2013-01-28 https://archive.today/20130128063240/http://www.ksdk.com/rss/article/257042/3/Court-approves-breaching-of-Birds-Point-Levee dead
Tennessee
thumb|left|Flooding along Beale Street in downtown Memphis, Tennessee
Dyersburg, a city in northwestern Tennessee, experienced the worst flooding with over 600 homes and businesses inundated as the Forked Deer River, a tributary of the Mississippi, flowed backwards into southern areas of the city. Hundreds of Structures Underwater in Dyersburg WREG Memphis On May 10, the river reached 47.8 ft, the highest level reached at Memphis since 1937, when the river there reached a record 48.7 ft, and the second highest level ever recorded, even surpassing the 1927 flood. Many local rivers spilled their banks, including Big Creek, the Loosahatchie River, and the Wolf River along with Nonconnah Creek. Subsequent flooding occurred in Millington, as well as suburban areas of Frayser, Bartlett, and East Memphis.
Arkansas
thumb|This image shows the resultant flooding of farmland west of the Mississippi 32 kilometers south of the deliberate levee breach near Cairo, Illinois.
Interstate 40, connecting Memphis and Little Rock, experienced flooding west of Memphis along the White River between Hazen and Brinkley, where lanes in both directions were closed. Brinkley itself also experienced flooding. Eight people died in Arkansas as a result of flooding. Man drowned in floodwaters in eastern Arkansas Associated Press May 5, 2011
Mississippi
yes section February 2012
thumb|Mississippi counties declared federal disaster areas.
In Tunica County, nine casinos located on stationary river barges were closed most of May. The hotel portion of the casinos are located on adjacent, low-lying land, and began to flood with the rising waters, some up to 6 ft m.Rising waters flood Tunica casinos http://www.wmctv.com/story/14582894/rising-waters-flood-tunica-casinos 2011-05-05 WMC 2011-05-05 https://web.archive.org/web/20110509004745/http://www.wmctv.com/story/14582894/rising-waters-flood-tunica-casinos 2011-05-09 dead Near Vicksburg, Highway 465 in Warren and Issaquena counties was closed on May 3 due to high flood waters.http://vicksburgpost.com/view/full_story/13125472/article-Eagle-Lake-residents-told-to-evacuate-Highways--levees--rails-shutting-down- February 2022 North-south access to and from Vicksburg was cut off for more than two weeks. U.S. Highway 61 between Vicksburg and Port Gibson was closed by backwater flooding along the Big Black River on May 12; it reopened June 1. Another portion of U.S. Highway 61 near Redwood was closed by backwater flooding along the Yazoo River on May 13 and was closed until June 3.http://vicksburgpost.com/view/full_story/13215521/article-61-closing-north-and-south-by-weekend-Flood-closes-second-casino- February 2022
In anticipation of major flooding, the U.S. federal government declared 14 counties along the Mississippi River, the Thames River: Adams, Bolivar, Claiborne, Coahoma, DeSoto, Humphreys, Issaquena, Jefferson, Sharkey, Tunica, Warren, Washington, Wilkinson and Yazoo.http://vicksburgpost.com/view/full_story/13264779/article-On-the-water? On the water? dead 2012-05-20 2016-02-02 https://web.archive.org/web/20160202025436/http://www.vicksburgpost.com/view/full_story/13264779/article-On-the-water
The Flood of 2011 set new record stages at Vicksburg and Natchez.U.S. National Weather Service Crest Summary Map along the Lower Mississippi River and Backwater Locations http://www.srh.noaa.gov/images/jan/Weather_Events/2011/May_MS_River_Flood/Crest_Summary.png 29 May 2011http://vicksburgpost.com/view/full_story/14361466/article--River-below-43-feet-Historic-flood-over-%E2%80%94-on-the-books- February 2022 The peak streamflow at Vicksburg, 2,310,000 cuft/s m3/s, exceeded both the estimated peak streamflow of the Great Mississippi Flood of 1927, 2278000 cuft/s m3/s on, and the measured peak streamflow of the 1937 flood, 2080000 cuft/s m3/s on.WaterWatch WaterWatch: Water Resources Conditions, Peak, Discharge https://waterwatch.usgs.gov/new/index.php?r=ms&id=pa01d USGS 1 June 2011Peak Streamflow USGS 07289000 MISSISSIPPI RIVER AT VICKSBURG, MS https://nwis.waterdata.usgs.gov/ms/nwis/dv?cb_00065=on&cb_00060=on&format=html&begin_date=2011-02-01&end_date=2011-07-20&site_no=07289000&referred_module=sw USGS 21 July 2012 The Project Design Flood predicts that a flowrate at Vicksburg of 2,710,000 cuft/s m3/s would still be within the limits of the downstream capacities, meaning that the May 17-18 peak flow was about 85% of the acceptable flowrate for Vicksburg.
+ Comparison of Observed 2011 Peak Stages and Record StagesU.S National Weather Service Mississippi River Hydrographs http://water.weather.gov/ahps2/river.php?wfo=pah&wfoid=18785&riverid=203833&view=1,1,1,1,1,1,1,1&toggles=10,7,8,2,9,15,6&pt%5B%5D=144108&pt%5B%5D=141463&pt%5B%5D=141839&pt%5B%5D=143934&pt%5B%5D=141618&pt%5B%5D=146423&pt%5B%5D=143366&pt%5B%5D=142172&pt%5B%5D=141493&pt%5B%5D=142940&pt%5B%5D=144619&pt%5B%5D=144798&pt%5B%5D=144609&pt%5B%5D=141308&pt%5B%5D=144449&pt%5B%5D=143828&pt%5B%5D=142711&allpoints=143846,142736,143816,143998,145144,142659,142234,145887,144081,142375,143866,141506,142962,143885,143323,144201,144542,142873,143260,143099,142560,144186,143177,142054,143945,144055,141370,143630,141931,142812,141676,142534,144568,143535,144589,143030,144031,143079,144282,141445,141722,141383,143445,143646,143787,143574,143545,142773,141629,144517,142500,143196,142105,142509,142418,144108,141463,141839,143934,141618,146423,143366,142172,141493,142940,144619,144798,144609,141308,144449,143828,142711&data%5B%5D=hydrograph 31 May 2011 Gage Flood Stage (ft) Crest Stage (ft) Crest Date Prior Record Stage (ft) Prior Record Date Memphis 34 47.8 10 May 2011 48.7 10 Feb 1937 Helena 44 56.5 12 May 2011 60.2 12 Feb 1937 Arkansas City 37 53.1 16 May 2011 59.2 21 Apr 1927 Greenville 48 64.2 16 May 2011 65.4 21 Apr 1927 Vicksburg 43 57.1 19 May 2011 56.2 4 May 1927 Natchez 48 61.9 19 May 2011 58.0 21 February 1937
Louisiana
yes section February 2012
thumb|right|250 px|Flow capacity for the Mississippi river in thousands of cubic feet per second based on the current project design flood.The Mississippi River & Tributaries Project: Designing the Project Flood United States Army Corps of Engineers April 2008 http://www.mvd.usace.army.mil/mrc/mrt/Docs/Designing%20the%20Project%20Flood%20info%20paper.pdf dead https://web.archive.org/web/20110523142809/http://www.mvd.usace.army.mil/mrc/mrt/Docs/Designing%20the%20Project%20Flood%20info%20paper.pdf May 23, 2011
Following the Great Mississippi Flood of 1927, much effort has been invested in building defenses to withstand a flood of three million cubic feet per second just upstream from the Old River Control Structure. The US Army Corps of Engineers refers to this design goal as Project Flood. the expected flow will be on the high side, but still within that maximum capacity, assuming everything works as expected.Contributing Op-Ed columnist http://www.nola.com/environment/index.ssf/2011/05/floods_are_a_reminder_of_the_m.html Floods are a reminder of the Mississippi River's power: John Barry 12 May 2011 NOLA.com 2011-05-16
Morganza Spillway and Atchafalaya Basin
On May 14, a single floodgate of the Morganza Spillway was opened in order to divert 125000 cuft/s of water from the Mississippi River to the Atchafalaya Basin. This diversion was deemed necessary to protect levees and prevent major flooding in Baton Rouge and New Orleans, with the tradeoff of exacerbating flooding in the Atchafalaya Basin, and will also reduce floodwater stress on the Old River Control Structure upstream. This was the first opening of the spillway since the 1973 flood.Paul Rioux, The Times-Picayune http://www.nola.com/environment/index.ssf/2011/05/morganza_floodway_opens_to_div.html Morganza Floodway opens to divert Mississippi River away from Baton Rouge, New Orleans 15 May 2011 NOLA.com 2011-05-16http://www.mvn.usace.army.mil/bcarre/morganza.asp Morganza Floodway 2011-05-08 US Army Corps of Engineers https://web.archive.org/web/20110521070429/http://www.mvn.usace.army.mil/bcarre/morganza.asp 21 May 2011 dead The Watchers http://thewatchers.adorraeli.com/2011/05/14/morganza-spillway-about-to-open/ US 2011 Great Flood: Morganza spillway about to open 14 May 2011 Thewatchers.adorraeli.com 2011-05-16 May 15, 2011 https://web.archive.org/web/20110515150125/http://thewatchers.adorraeli.com/2011/05/14/morganza-spillway-about-to-open/ dead
By May 15, a total of nine gates had been opened by the Corps of Engineers. The Corps had estimated that it would take opening one-fourth of the spillway's 125 bays—or 31 bays—to control the flow of the river through Baton Rouge in response to a forecast crest of 45 ft m anticipated on May 17, which must remain below 1500000 cuft/s on of water per second through Baton Rouge to ensure the integrity of the levee system.KENNEDY KATIE Planning for high water http://www.2theadvocate.com/news/Planning-for-high-water.html 15 May 2011 The Advocate 15 May 2011 dead https://web.archive.org/web/20110518231217/http://www.2theadvocate.com/news/Planning-for-high-water.html May 18, 2011
Prior to the decision to open more gates on the spillway, the Corps studied four flooding scenarios, all of which assumed the Bonnet Carré Spillway near New Orleans would be concurrently operating at full capacity (100%).
Scenario 1: Open the Morganza Spillway to half (50%) of its maximum capacity, which would divert 300000 cuft/s of water.
Scenario 1a: Open the Morganza Spillway to one-quarter (25%) of its maximum capacity, which would divert 150000 cuft/s of water.
Scenario 2: Do not open the Morganza Spillway, and keep the Old River Control Structure at its routine operating level of only 30% of the Mississippi's flow; no additional water would be diverted
Scenario 3: Do not open the Morganza Spillway, and open the Old River Control Structure somewhat more, which would divert an extra 150000 cuft/s of water.
Following this analysis, which showed that extensive flooding was expected in the Atchafalaya Basin regardless of the choice made regarding the Morganza Spillway, the Corps decided to start the 2011 diversion by opening the spillway a bit less than described in scenario 1a (21%, not 25%)
The Corps of Engineers subsequently released a map showing the estimated times it would take the flood waters to reach the various communities in the Atchafalaya Basin over eight days.The Times-Picayune (May 16, 2011) "New maps of Mississippi River, Atchafalaya River estimated flooding released by Corps"
Source United States Army Corps of Engineershttp://www.mvn.usace.army.mil/bcarre/missriver.asp The Mississippi River 2011-05-12 2011-05-09 United States Army Corps of Engineers https://web.archive.org/web/20110521070521/http://www.mvn.usace.army.mil/bcarre/missriver.asp 21 May 2011 dead
Waterford Nuclear Generating Station
The Waterford Nuclear Generating Station, about 25 mi km west of New Orleans, was restarted May 12,https://www.nrc.gov/reading-rm/doc-collections/event-status/reactor-status/2011/20110511ps.html#r4 NRC: Power Reactor Status Report for May 11, 2011 Nuclear Regulatory Commission 2011-05-11 2011-05-16https://www.nrc.gov/reading-rm/doc-collections/event-status/reactor-status/2011/20110513ps.html#r4 NRC: Power Reactor Status Report for May 13, 2011 Nuclear Regulatory Commission 2011-05-13 2011-05-16 after a refueling shutdown on April 6.https://www.nrc.gov/reading-rm/doc-collections/event-status/reactor-status/2011/20110406ps.html#r4 NRC: Power Reactor Status Report for April 6, 2011 Nuclear Regulatory Commission 2011-05-16
Bonnet Carré Spillway and Lake Pontchartrain
The Bonnet Carré Spillway, near New Orleans, was built to divert water from the Mississippi River to Lake Pontchartrain, and from there to the Gulf of Mexico, reducing water levels and flow near New Orleans. On May 23, 330 of the structure's 350 bays were opened due to rising water levels otherwise anticipated to jeopardize levees protecting New Orleans.http://www.mvn.usace.army.mil/bcarre/2011operation.asp U.S. Army Corps of Engineers Team New Orleans May 13, 2012 dead https://web.archive.org/web/20110521190827/http://www.mvn.usace.army.mil/bcarre/2011operation.asp May 21, 2011 The Army Corps of Engineers began closing the spillway gates on June 12 as the river level began to fall and the last of the gates were closed on June 20. Last gates at Bonnet Carre Spillway closed June 20, 2011 http://www.nola.com/environment/index.ssf/2011/06/last_gates_at_bonnet_carre_spi.html Associated Press 2011-06-22
Climate factors
The Gravity Recovery and Climate Experiment (GRACE) satellites indicated a continued water storage increase over the Missouri River Basin (MRB) prior to the 2011 flood event.https://ams.confex.com/ams/94Annual/videogateway.cgi/id/25952?recordingid=25952 Video Gateway A 2014 studyWang Shih-Yu Hakala Kirsti Gillies Robert R. Capehart William J. The Pacific quasi-decadal oscillation (QDO): An important precursor toward anticipating major flood events in the Missouri River Basin?: Wang et al.: Precursor of Missouri River Floods Geophysical Research Letters 16 February 2014 41 3 991–997 10.1002/2013GL059042 128460718 free examined what climate forcing conditions preceded the long-term changes in these variables. It was found that precipitation over the MRB undergoes a profound modulation during the transition points of the Pacific quasi-decadal oscillation and associated teleconnections. The results infer a prominent teleconnection forcing in driving the wet/dry spells in the MRB, and this connection implies persistence of dry conditions for the next 2 to 3 years.
Risk of major course change in the Lower Mississippi River
thumb|The Old River Control Structure complex. View is to the east-southeast, looking downriver on the Mississippi, with the three dams across channels of the Atchafalaya River to the right of the Mississippi. Concordia Parish, Louisiana, is in the foreground, on the right, and Wilkinson County, Mississippi, is in the background, across the Mississippi on the left.
During the 2011 floods, concerns were raised that the Mississippi might divert its main channel into the Atchafalaya Basin if the Old River Control Structure, the Morganza Spillway, or nearby levees failed, or into Lake Pontchartrain if the Bonnet Carré Spillway or adjacent levees failed.McPhee John http://www.newyorker.com/archive/1987/02/23/1987_02_23_039_TNY_CARDS_000347146?currentPage=all McPhee, The Control of Nature: Atchafalaya The New Yorker 1987-02-23 2011-05-16 http://www.mappingsupport.com/p/gmap4.php?q=https://sites.google.com/site/gmap4files/p/news/mississippi_course_change.txt&ll=30.417887,-91.201416&t=h&z=9&label=on Will the Mississippi River change its course in 2011 to the red line? 2011-05-08 MappingsupportClaire Taylor Morganza ready for flood http://www.theadvertiser.com:80/article/20110512/NEWS01/105120319/Morganza-ready-flood The Advertiser https://web.archive.org/web/20110513200927/http://www.theadvertiser.com:80/article/20110512/NEWS01/105120319/Morganza-ready-flood 13 May 2011 12 May 2011 deadMark Schleifstein, The Times-Picayune http://www.nola.com/weather/index.ssf/2011/05/army_corps_fears_massive_flood.html Mississippi River flooding in New Orleans area could be massive if Morganza spillway stays closed NOLA.com 2011-05-16http://www.johnweeks.com/river_mississippi/pages/lmiss25.html Bonnet Carre Spillway, Norco, LA Johnweeks.com 2008-04-10 2011-05-16 Jeff Masters of the Weather Underground noted that failure of the Old River Control Structure "would be a serious blow to the U.S. economy, and the great Mississippi flood of 2011 will give [this structure] its most severe test ever."http://www.wunderground.com/blog/JeffMasters/comment.html?entrynum=1801 America's Achilles' heel: the Mississippi River's Old River Control Structure: Wunder Blog Wunderground.com 2011-05-16
During the 2011 floods, the Army Corps of Engineers decided to open the Morganza Spillway at 1/4 of its capacity to allow 150000 cuft/s m3/s on to enter the Morganza and Atchafalaya floodways. In addition to reducing the 2011 flood crest downstream, this reduced the chances of a channel change by reducing stress on the other elements of the control system.
See also
2011 Mississippi River floods
2011 Missouri River Flood
2011 Assiniboine River Flood
2011 Red River Flood
2011 Souris River flood
2011 Super Outbreak
Atchafalaya River
Bird's Point, Missouri
Great Mississippi and Missouri Rivers Flood of 1993
Great Mississippi Flood of 1927
Ohio River flood of 1937
Old River Control Structure
References
30em
External links
Before and after satellite images
NASA; The Weather Channel, May 4
before and after images from IBTimes.com, May 12
animated javascript version from HuffingtonPost.com, May 12
Kentucky to Mississippi State from NASA, May 20
Satellite images of flooding from NASA Earth Observatory
Advanced Hydrologic Prediction Service - NOAA
Mississippi river flood gauges (National Weather Service)
US Army Corps of Engineers Mississippi River Flood Fight
Photos: Mississippi River flooding at The Big Picture, Boston.com
Interactive satellite and topographic maps from the Old River Control Structure to the Gulf
General Weather Conditions and Precipitation Contributing to the 2011 Flooding in the Mississippi River and Red River of the North Basins, December 2010 through July 2011 United States Geological Survey
Streamflow Characterization and Summary of Water-Quality Data Collection During the Mississippi River Flood, April through July 2011 United States Geological Survey
Flood, Mississippi
2011
2011, Mississippi
2011 Mississippi River floods
2011, Mississippi
2011, Mississippi
2011, Mississippi
2011, Mississippi
Category:Floods in Louisiana
Category:2011 in Arkansas
Category:2011 in Illinois
Category:2011 in Kentucky
Category:2011 in Mississippi
Category:2011 in Missouri
Category:2011 in Louisiana
Category:2011 in Tennessee
Category:May 2011 in the United States
Category:June 2011 in the United States