Mississippi and atchafalaya river flood briefing may 17 2011 2pm
Download
1 / 13

Mississippi and Atchafalaya River Flood Briefing May 17, 2011 2pm - PowerPoint PPT Presentation


  • 116 Views
  • Uploaded on

Mississippi and Atchafalaya River Flood Briefing May 17, 2011 2pm. National Weather Service Lower Mississippi River Forecast Center and Weather Forecast Office New Orleans/Baton Rouge, Lake Charles and Jackson, MS. Rainfall Next 5 Days. No significant rain expected in Louisiana

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Mississippi and Atchafalaya River Flood Briefing May 17, 2011 2pm' - beck


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Mississippi and atchafalaya river flood briefing may 17 2011 2pm

Mississippi and Atchafalaya River Flood BriefingMay 17, 20112pm

National Weather Service

Lower Mississippi River Forecast Center

and

Weather Forecast OfficeNew Orleans/Baton Rouge, Lake Charles and Jackson, MS


Rainfall next 5 days
Rainfall Next 5 Days

No significant rain expected in Louisiana

through Sunday




May 19

May 20

May 21

Dry weather will prevail through

the weekend.

A slow moving cold front will

remain west of the region.

Southerly winds will increase to

near 15 mph on Thursday and

will continue into the weekend.

May 22

May 23


Mississippi River Crests

Morganza Spillway Utilization 20% or 125,000 CFS


Atchafalaya River Crests

Morganza Spillway Utilization 20% or 125,000 CFS


Mississippi River Forecast

Morganza Operation – appr. 20% or 125,000 CFS

Crest Height at 57.5’May 19th

Crest Height at 63.0’ May 21st

Crest Height at 63.5’ May 22nd

Crest Height at 44.8’ May 18th

Crest Height at 32.5’ May 18th

Crest Height at 23.8’cresting

Crest Height at 17.0’ cresting


Atchafalaya River Basin

Morganza Operation – appr. 20% or 125,000 CFS

Crest Height at 44.5’

May 20rd

Crest Height at 35.0’

May 21rd

Crest Height at 31.0’

May 22th

Crest Height at 27.0’

May 24th

Crest Height at 18.0’

May 25th

Crest Height at 17.0’

May 25th

Crest Height at 11.0’

May 25th


Morgan city impacts forecast crest 11 ft 20 of morganza

DATE CREST

05/28/1973 10.53 RECORD

06/27/1957 8.46

04/05/1997 8.06

04/18/1975 7.95

06/06/1983 7.32

Morgan City ImpactsForecast crest – 11 FT (20% of Morganza)


Morgan city forecast crest 11 ft

4 ft – Water will move up the bank and across access roads below the city dock. Vessel Traffic safety rules will be strictly enforced by the US Coast Guard. Minor

5 ft – Floodwall gates will be closed to protect against higher stages. Vessel traffic will be affected by stronger river current and vessel traffic safety rules will be strictly enforced by the U. S. Coast guard. Minor

6 ft – The city dock will be under water. Water will cover the lower end of Belleview Front street in Berwick. Vessel traffic will be affected by stronger river current and vessel traffic safety rules will be strictly enforced by the U. S. Coast guard. Minor

7 ft – Buildings at the foot of Ann street on the river side of the flood wall will flood as water overtops the Rio Oil Company dock. Buildings on the river side of the Berwick floodwall will flood. River traffic restrictions will be strictly enforced. Moderate

9 ft – structures on the river side of protection walls in Morgan City and Berwick will be under water. River traffic restrictions will be strictly enforced. Moderate

Morgan CityForecast crest – 11 ft


Morgan city forecast crest 11 ft1

If more water is diverted through below the city dock. Vessel Traffic safety rules will be strictly enforced by the US Coast Guard. Morganza and stage reaches 12.0 ft this would be a Major flood threat.

Back water flooding of 5 to 6 feet at Bayou Bouef will cause damage east of Morgan City to the community of Amelia.

Structures on the river side of protection walls in Morgan City and Berwick will be under water. River traffic restrictions will be strictly enforced.

Morgan CityForecast Crest – 11 ft


Records on Mississippi River below the city dock. Vessel Traffic safety rules will be strictly enforced by the US Coast Guard.

Red River Landing

Baton Rouge

47.28 ft on 05/15/1927

45.18 ft on 05/16/1922

45.18 ft on 04/29/1945

Current forecast crest 45.0 ft

  • 61.61 ft on 03/24/1997

  • 60.94 ft on 05/14/1927

  • 60.70 ft on 04/24/2008

    Current forecast crest 64.5 ft

Donaldsonville

Reserve

36.01 ft on 05/15/1927

34.75 ft on 05/16/1922

34.11 ft on 04/29/1945

Current forecast crest 33.5 ft

26.00 ft on 06/11/1929

25.90 ft on 04/28/1945

25.60 ft on 03/05/1932

CRESTING

New Orleans

21.27 ft on 04/25/1922

21.02 ft on 05/11/1912

21.00 ft on 04/25/1927

CRESTING


ad