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A torrential rain event during the first full week of March 2016 featuring over two feet of record March rain in the South unleashed major river flooding, rising to historic levels in some areas.

(MORE: Flood Impacts)

Record flooding occurred along a sizable stretch of the Sabine River along the Texas/Louisiana border, due to record releases from Toledo Bend Reservoir, first put in service in 1966.

<img class="styles__noscript__2rw2y" src="https://dsx.weather.com//util/image/w/toledo-bend-flood-10mar16.jpg?v=at&w=485&h=273&api=7db9fe61-7414-47b5-9871-e17d87b8b6a0" srcset="https://dsx.weather.com//util/image/w/toledo-bend-flood-10mar16.jpg?v=at&w=485&h=273&api=7db9fe61-7414-47b5-9871-e17d87b8b6a0 400w, https://dsx.weather.com//util/image/w/toledo-bend-flood-10mar16.jpg?v=ap&w=980&h=551&api=7db9fe61-7414-47b5-9871-e17d87b8b6a0 800w" > Aerial view of the Toledo Bend Dam near Burkeville, Texas, on Mar. 10, 2016. At the time, a record release of 207,644 cubic feet per second, or about 1.5 million gallons per second, was occurring. (Vernon Parish Sheriff's Office Deputy Rusty Bailey) (Vernon Parish Sheriff's Office Deputy Rusty Bailey)

The river crushed a previous record crest near Burkeville, Texas by over 5 feet, topped a 1913 record east of Bon Wier, Texas, and topped an unofficial record from 1884 in Deweyville, Texas, Monday.

(MORE: Deweyville Hit By Massive Flooding)

Record flooding has occurred in nine locations, including the Bogue Falaya River in Covington, Louisiana, and Bayou Dorcheat at Lake Bistineau, Louisiana.

Scroll down for a full rundown of the notable river flooding below.

(MORE: Over a Dozen Major Flash Floods in the Last 12 Months )

The top rainfall total from this multi-day heavy rain event last week was just shy of 27 inches just south-southeast of Monroe, Louisiana. The official airport reporting station in Monroe had picked up 20.66 inches of rain from March 8-11.

Incredibly, in just four days, this set a record for the wettest month in Monroe, outpacing October 2009 when 20.56 inches was recorded. Including rainfall from earlier in the month and on Sunday, Monroe has seen 21.35 inches since March 1.

In just six days, the cooperative station outside of Monroe (26.96 inches), picked up half the average annual precipitation of Monroe's Regional Airport (53.71 inches).

For more storm reports and historical perspective on this event, scroll down a bit to our recap section below.

River Flooding Notables

Below is a list of river crests in various locations, including places that have set records.

Record Crests:

Bayou Dorcheat at Lake Bistineau, Louisiana: Crest has topped the previous record flood from April 1991 by just over 2 feet. Records there date back to at least 1974. Homes are flooded at these levels.

Crest has topped the previous record flood from April 1991 by just over 2 feet. Records there date back to at least 1974. Homes are flooded at these levels. Bogue Chitto River near Bush, Louisiana : Just barely topped record crest from April 1983 on March 12. Homes flooded. Access road flooded.

: Just barely topped record crest from April 1983 on March 12. Homes flooded. Access road flooded. Bogue Falaya River at Boston Street (Covington, Louisiana) : Crested almost 3 feet above the previous record crest from Jan. 21, 1993 on March 11.

: Crested almost 3 feet above the previous record crest from Jan. 21, 1993 on March 11. Coldwater River at Marks, Mississippi : Crested at 42.07 feet, just above previous record of 41.89 feet from December 1991. This likely flooded much of northern Quitman County, including numerous homes. (Note: period of record appears to date only to 1991.)

: Crested at 42.07 feet, just above previous record of 41.89 feet from December 1991. This likely flooded much of northern Quitman County, including numerous homes. (Note: period of record appears to date only to 1991.) Little River of Louisiana near Rochelle : Crested just over 4 feet above the previous record crest from Dec. 29, 1982. Catastrophic flooding of numerous homes with communities in the floodplain isolated. This will persist into early this week.

: Crested just over 4 feet above the previous record crest from Dec. 29, 1982. Catastrophic flooding of numerous homes with communities in the floodplain isolated. This will persist into early this week. Sabine River east of Bon Wier, Texas : Record crest recorded on March 13 topped the previous record from April 1913. Widespread, catastrophic flooding along this stretch.

: Record crest recorded on March 13 topped the previous record from April 1913. Widespread, catastrophic flooding along this stretch. Sabine River east of Burkeville, Texas: Crested about 5.8 feet above its previous record flood stage of just over 48 feet set on Feb. 1, 1999. Records date to 1884. "Widespread major to catastrophic flooding occurs" at these levels.

Crested about 5.8 feet above its previous record flood stage of just over 48 feet set on Feb. 1, 1999. Records date to 1884. "Widespread major to catastrophic flooding occurs" at these levels. Sabine River at Deweyville, Texas : Crested at 33.24 feet on March 15, topping the unofficial May 1884 record of 32.2 feet, due to previous record releases from Toledo Bend Reservoir well upstream. At these levels, the town of Deweyville was isolated, with numerous homes flooded and widespread, catastrophic flooding.

: Crested at 33.24 feet on March 15, topping the unofficial May 1884 record of 32.2 feet, due to previous record releases from Toledo Bend Reservoir well upstream. At these levels, the town of Deweyville was isolated, with numerous homes flooded and widespread, catastrophic flooding. Tchefuncte River near Folsom, Louisiana : Topped record crest from April 1983. Highway 40 bridge threatened. Evacuations required, homes flooded at that level.

Other Crests:

Amite River at Bayou Manchac Point, Louisiana : Crested at just over 15 feet on March 14 (major flood), highest since Tropical Storm Allison in 2001. Homes possibly impacted, roads impassable.

: Crested at just over 15 feet on March 14 (major flood), highest since Tropical Storm Allison in 2001. Homes possibly impacted, roads impassable. Amite River at Port Vincent, Louisiana : Crested at 11.2 feet Monday. Streets flooded in the town with some residential flooding.

: Crested at 11.2 feet Monday. Streets flooded in the town with some residential flooding. Bayou D'Arbonne at Lake D'Arbonne, Louisiana: Crested just shy of 89 feet, second highest crest on record, on March 11. Severe flooding of several homes likely occurred around the lake, with nearly all roads flooded to some extent.

Crested just shy of 89 feet, second highest crest on record, on March 11. Severe flooding of several homes likely occurred around the lake, with nearly all roads flooded to some extent. Big Cypress Creek (Caddo Lake) at Mooringsport, Louisiana : Appears to have crested at its fourth highest level on record, highest since May 1966. Several hundred homes, including some on stilts, are likely flooding.

: Appears to have crested at its fourth highest level on record, highest since May 1966. Several hundred homes, including some on stilts, are likely flooding. Big Sunflower River at Sunflower, Mississippi : Tied fourth highest crest on record, just 0.37 feet below the 1973 record crest. Low-lying streets flooded.

: Tied fourth highest crest on record, just 0.37 feet below the 1973 record crest. Low-lying streets flooded. Bogue Chitto River at Franklinton, Louisiana : Crested at third highest level on record (24.27 feet on March 11). Homes flooded.

: Crested at third highest level on record (24.27 feet on March 11). Homes flooded. Calcasieu River near Glenmora, Louisiana : Crested March 12 as a tie at the second highest level on record, topping the 1989 flood, but shy of the record May 1953 level. Flooding of several structures and roads.

: Crested March 12 as a tie at the second highest level on record, topping the 1989 flood, but shy of the record May 1953 level. Flooding of several structures and roads. Calcasieu River near Oberlin: Crested below 23 feet on March 14, which is fifth highest crest on record. Secondary roads and homes were affected at 19 feet.

Crested below 23 feet on March 14, which is fifth highest crest on record. Secondary roads and homes were affected at 19 feet. Leaf River near McClain, Mississippi : Crested at its fourth highest level on record, highest since 1974. Flooding of homes, county roads.

: Crested at its fourth highest level on record, highest since 1974. Flooding of homes, county roads. Obion River near Bogota, Tennessee : Crested at seventh highest level on record, highest since May 2011. At that level, flooding of a few homes in the town was likely along with secondary roads.

: Crested at seventh highest level on record, highest since May 2011. At that level, flooding of a few homes in the town was likely along with secondary roads. Obion River near Obion, Tennessee : Crested at its fourth highest level on record, highest since May 2011. Flooding widespread in Rives and flooding in the town of Obion, as well.

: Crested at its fourth highest level on record, highest since May 2011. Flooding widespread in Rives and flooding in the town of Obion, as well. Pearl River near Pearl River, Louisiana : Crested at its second highest level on record Monday (20.32 feet). Subdivisions flooded near the river and parts of I-10 east of Slidell likely were covered.

: Crested at its second highest level on record Monday (20.32 feet). Subdivisions flooded near the river and parts of I-10 east of Slidell likely were covered. Red River at Shreveport, Louisiana : Crested at 31.79 feet (moderate flood) March 14. A couple of city parks flood, and Russell Road flooded between I-220 and Blanchard Highway in north Shreveport at those levels.

: Crested at 31.79 feet (moderate flood) March 14. A couple of city parks flood, and Russell Road flooded between I-220 and Blanchard Highway in north Shreveport at those levels. Sabine River at Logansport, Louisiana: Crested at 35.06 feet on March 13. At that level, the city's water plant was in danger of flooding. Several dozen homes likely flooded, as well.

Crested at 35.06 feet on March 13. At that level, the city's water plant was in danger of flooding. Several dozen homes likely flooded, as well. Sabine River at Orange, Texas : Crested at its second highest level on record (7.62 feet) on March 17, due to record releases from Toledo Bend Reservoir well upstream. At the 6-foot river stage, numerous roads and homes were subject to flooding. Only twice before had the river reached the 6-foot stage at Orange: 1) Hurricane Ike 2008 (9.86 feet) and 2) April 25, 1913 (6.27 feet).

: Crested at its second highest level on record (7.62 feet) on March 17, due to record releases from Toledo Bend Reservoir well upstream. At the 6-foot river stage, numerous roads and homes were subject to flooding. Only twice before had the river reached the 6-foot stage at Orange: 1) Hurricane Ike 2008 (9.86 feet) and 2) April 25, 1913 (6.27 feet). Tangipahoa River at Robert, Louisiana : Crested at third highest level on record on March 12. Highways, including U.S. 190, flooded. Some homes flooded, cut off.

: Crested at third highest level on record on March 12. Highways, including U.S. 190, flooded. Some homes flooded, cut off. Tchefuncte River near Covington, Louisiana : Third highest crest recorded on March 12. U.S. 190 bridge flooded, homes flooded.

: Third highest crest recorded on March 12. U.S. 190 bridge flooded, homes flooded. Tickfaw River at Liverpool, Louisiana : Fourth highest crest recorded on March 11. Flooding of roads and buildings near the river.

: Fourth highest crest recorded on March 11. Flooding of roads and buildings near the river. Trinity River at Liberty, Texas: Crested just shy of the 29-foot stage. Five to six subdivisions cut off, according to the National Weather Service.

Crested just shy of the 29-foot stage. Five to six subdivisions cut off, according to the National Weather Service. West Fork San Jacinto River Near Humble, Texas : Crested March 12 just over 3.5 feet above flood stage lead to flooding of homes in several subdivisions.

: Crested March 12 just over 3.5 feet above flood stage lead to flooding of homes in several subdivisions. West Hobolochitto Creek near McNeill, Mississippi : Crested March 12 more than 7.6 feet above flood stage. Several homes flooded.

Why This Happened

A massive, slow-moving, southward dip in the jet stream inched east across Mexico, then near the Gulf Coast, funneling deep, tropical moisture into parts of the South and Mississippi Valley, a rather unusual pattern for early March.

In fact, atmospheric moisture values (known to meteorologists as "precipitable water") topped a March record (or for any winter month) in Lake Charles, Louisiana on March 10.

(MORE: More Flooding in a Warming World )

Recap of an Historic March Event

<img class="styles__noscript__2rw2y" src="https://dsx.weather.com//util/image/w/south-flood-12mar16-primary.jpg?v=at&w=485&h=273&api=7db9fe61-7414-47b5-9871-e17d87b8b6a0" srcset="https://dsx.weather.com//util/image/w/south-flood-12mar16-primary.jpg?v=at&w=485&h=273&api=7db9fe61-7414-47b5-9871-e17d87b8b6a0 400w, https://dsx.weather.com//util/image/w/south-flood-12mar16-primary.jpg?v=ap&w=980&h=551&api=7db9fe61-7414-47b5-9871-e17d87b8b6a0 800w" > Rainfall is estimated from March 7-12, 2016. The heaviest totals, generally in excess of 6 inches, fell in the areas shaded in yellow. River/areal flood warnings on March 12, 2016 shown by green polygons.

First, here are the highest storm-total rainfalls from both official observing stations and cooperative observers:

Near Monroe, Louisiana: 26.96 inches

Near Swartz, Louisiana: 23.33 inches

Bossier City (Barksdale AFB), Louisiana: 19.09 inches

Near Hemphill, Texas: 18.60 inches

Portland, Arkansas: 18.05 inches

Near Minden, Louisiana: 17.26 inches

Cleveland, Mississippi: 14.29 inches

Near Longview, Texas: 12.03 inches

Shreveport (Regional Airport), Louisiana: 12.02 inches

Near Collierville, Tennessee: 11.50 inches

Memphis Int'l Airport: 8.40 inches

Jackson, Mississippi: 8.21 inches

Hattiesburg, Mississippi: 7.87 inches

Suffice to say, this was one of the heaviest March rain events on record in this area, more reminiscent of a tropical storm or its remnant.

Calendar-day rainfall records for any March day had already been set in the following locations:

Corpus Christi, Texas: 5.15 inches on March 9

Greenville, Mississippi: 5.64 inches on March 9

Monroe, Louisiana: 10.86 inches on March 9; (their second wettest March day is now March 8, when 5.62 inches of rain fell at Monroe Regional Airport)

Shreveport, Louisiana: 5.12 inches on March 8; (their second wettest March day is now March 9, when another 4.42 inches of rain fell)

Meteorologist and hurricane specialist Eric Blake noted the storm-total rainfall in Monroe, Louisiana, as of early Thursday morning topped the previous record for any two week period, there, in records dating to 1930.

Over 13 inches of rain fell Thursday night into Friday morning, prompted evacuations of 50 residents near Hammond, Louisiana, northwest of New Orleans. A building collapsed and a road washed out at the Washington Parish fairgrounds in Franklinton, Louisiana.

Numerous roads were flooded and closed in Hattiesburg, Mississippi, evacuations were prompted in Petal and Seminary, Mississippi, and a bridge collapsed in Laurel, Mississippi. Businesses reportedly were flooded by several feet of water in Tylertown, Mississippi.

(MORE: Your Vehicle Can Be Biggest Danger In Flash Flooding )

Major flooding also swamped the Shreveport, Louisiana, area where up to 18 inches of rain has fallen. Elsewhere, double-digit rainfall totals have been recorded in east Texas, southern Arkansas, and northwest Mississippi.

While not as heavy as locations to their south, this was a rain event of unusual magnitude in Memphis.

Flooding prompted evacuations in Greenwood, Haughton, Homer, Minden and Rayville, Louisiana. Evacuations have also been performed by watercraft at Lake Mexia in Texas where flooding was reportedly comparable to what occurred there last April. In Arkansas, evacuations were ordered in Dermott where at least 10 families were displaced by floodwaters.

By Wednesday night, flooding was expanding north and northeast across the Mississippi Valley, with significant flooding impacted portions of western Tennessee. At least one water rescue was made in Union City, where numerous roads were shut down due to high water.

Flooding began Monday night west of Ft. Worth, Texas, as floodwaters swamped homes and forced water rescues. In Minden, Louisiana, water was coming into the Webster Parish Courthouse and at least 40 other buildings were flooded. Water was also reported in homes in Dixie Inn, Louisiana Tuesday evening.

Flooding wasn't the only impact of this unusual pattern.

An EF1 tornado caused damage near Cool, Texas Monday evening and an EF1 tornado touched down near Tolar, Texas, southwest of Ft. Worth Tuesday morning. An EF1 tornado also left a narrow path of damage in Stephenville, Texas early Tuesday. A squall line then surged through Ft. Worth packing a 66 mph gust at the Ft. Worth Meacham Airport and a gust to 72 mph at Interstate 820 and Blue Mound Road.

Baseball size hail pounded Voca, Texas Tuesday evening, while hail to the size of golf balls covered the ground in both Evant and Jonesboro, in Texas.

You can find out more on impacts from this storm system at the link below.

(MORE: Severe Weather and Flooding Hit the South)

Continue to check back with weather.com for updated information and forecasts in the coming days.

MORE ON WEATHER.COM: Southern Flooding and Severe Weather