Overview Realtime Historical Map View
Heat Advisory
2026-08-22T20:00:00-05:00

* WHAT...Heat index values up to 112 expected. * WHERE...All of southeast Louisiana and southern Mississippi. * WHEN...From 11 AM this morning to 8 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Bayou Lafourche Sw Of Donaldsonville, La Historical Data

Historical Data


Streamflow Range


Date Average 2026 2025 2024 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011
01-01 319.5
01-02 324.6
01-03 315.4
01-04 304.9
01-05 321.4
01-06 320.7
01-07 318.0
01-08 320.8
01-09 305.1
01-10 336.0
01-11 331.11
01-12 333.0
01-13 327.44
01-14 327.44
01-15 332.67
01-16 324.22
01-17 320.82
01-18 320.18
01-19 329.0
01-20 333.27
01-21 327.0
01-22 341.18
01-23 300.8
01-24 327.18
01-25 329.82
01-26 329.4
01-27 316.4
01-28 323.36
01-29 331.73
01-30 337.0
01-31 330.83
02-01 332.5
02-02 288.52
02-03 335.1
02-04 335.9
02-05 304.03
02-06 321.0
02-07 309.84
02-08 298.55
02-09 335.0
02-10 326.18
02-11 319.27
02-12 318.82
02-13 321.55
02-14 335.17
02-15 323.58
02-16 326.92
02-17 324.82
02-18 321.73
02-19 339.2
02-20 315.25
02-21 319.55
02-22 329.45
02-23 337.0
02-24 316.18
02-25 321.3
02-26 335.78
02-27 327.36
02-28 330.45
02-29 348.0
03-01 362.9
03-02 353.6
03-03 361.2
03-04 372.1
03-05 371.2
03-06 354.5
03-07 358.42
03-08 365.25
03-09 361.5
03-10 345.33
03-11 329.5
03-12 344.58
03-13 366.91
03-14 343.08
03-15 353.83
03-16 355.58
03-17 355.67
03-18 356.25
03-19 364.77
03-20 367.25
03-21 369.08
03-22 383.27
03-23 393.83
03-24 352.97
03-25 339.86
03-26 342.46
03-27 362.62
03-28 356.77
03-29 364.62
03-30 362.0
03-31 360.17
04-01 365.23
04-02 365.31
04-03 357.38
04-04 362.77
04-05 332.92
04-06 336.0
04-07 360.62
04-08 344.0
04-09 343.33
04-10 358.46
04-11 322.05
04-12 362.0
04-13 363.25
04-14 317.51
04-15 283.42
04-16 322.14
04-17 333.91
04-18 322.82
04-19 361.36
04-20 360.45
04-21 368.42
04-22 365.58
04-23 360.08
04-24 365.0
04-25 356.73
04-26 380.64
04-27 382.73
04-28 382.2
04-29 391.7
04-30 396.7
05-01 381.82
05-02 334.09
05-03 355.18
05-04 357.0
05-05 359.75
05-06 370.25
05-07 375.33
05-08 359.18
05-09 356.0
05-10 333.27
05-11 333.27
05-12 313.75
05-13 352.58
05-14 358.82
05-15 339.03
05-16 358.18
05-17 376.18
05-18 350.25
05-19 343.88
05-20 348.45
05-21 339.75
05-22 340.67
05-23 363.75
05-24 361.08
05-25 372.75
05-26 378.0
05-27 382.58
05-28 376.92
05-29 362.47
05-30 363.92
05-31 351.82
06-01 365.08
06-02 365.75
06-03 386.55
06-04 388.64
06-05 350.3
06-06 344.83
06-07 351.82
06-08 387.73
06-09 389.0
06-10 397.36
06-11 395.45
06-12 403.7
06-13 400.0
06-14 405.8
06-15 393.64
06-16 382.82
06-17 371.55
06-18 362.18
06-19 344.9
06-20 370.73
06-21 353.64
06-22 363.45
06-23 361.09
06-24 365.91
06-25 365.27
06-26 345.09
06-27 370.27
06-28 365.36
06-29 360.55
06-30 353.45
07-01 371.0
07-02 373.55
07-03 378.09
07-04 377.73
07-05 349.42
07-06 352.25
07-07 336.82
07-08 346.55
07-09 369.9
07-10 378.83
07-11 375.67
07-12 374.0
07-13 363.82
07-14 356.25
07-15 377.0
07-16 390.0
07-17 395.36
07-18 389.55
07-19 386.09
07-20 367.5
07-21 386.36
07-22 385.91
07-23 364.5
07-24 364.5
07-25 375.58
07-26 375.25
07-27 366.08
07-28 351.42
07-29 360.0
07-30 373.33
07-31 372.83
08-01 362.45
08-02 375.83
08-03 373.92
08-04 375.5
08-05 360.58
08-06 371.08
08-07 372.33
08-08 346.51
08-09 370.64
08-10 332.55
08-11 367.27
08-12 354.55
08-13 339.45
08-14 322.5
08-15 329.33
08-16 336.73
08-17 346.82
08-18 356.0
08-19 342.91
08-20 373.4
08-21 359.9
08-22 328.1
08-23 359.36
08-24 349.9
08-25 330.4
08-26 354.27
08-27 347.45
08-28 343.36
08-29 335.91
08-30 311.49
08-31 346.89
09-01 327.97
09-02 337.45
09-03 350.0
09-04 358.0
09-05 357.27
09-06 361.55
09-07 354.27
09-08 357.27
09-09 357.0
09-10 357.73
09-11 361.36
09-12 357.91
09-13 349.82
09-14 337.6
09-15 321.4
09-16 313.7
09-17 314.3
09-18 315.4
09-19 328.7
09-20 330.4
09-21 333.1
09-22 314.78
09-23 331.56
09-24 331.78
09-25 347.3
09-26 347.45
09-27 350.09
09-28 349.27
09-29 339.09
09-30 335.5
10-01 325.3
10-02 327.3
10-03 338.5
10-04 342.2
10-05 351.18
10-06 343.58
10-07 337.5
10-08 336.42
10-09 342.92
10-10 331.83
10-11 332.33
10-12 355.67
10-13 330.92
10-14 341.08
10-15 341.42
10-16 323.73
10-17 333.5
10-18 338.25
10-19 338.08
10-20 338.08
10-21 325.8
10-22 345.0
10-23 346.25
10-24 328.67
10-25 340.5
10-26 311.42
10-27 332.42
10-28 337.92
10-29 337.0
10-30 331.83
10-31 323.83
11-01 320.0
11-02 339.36
11-03 338.42
11-04 339.17
11-05 341.17
11-06 332.18
11-07 326.82
11-08 305.64
11-09 319.09
11-10 327.36
11-11 328.18
11-12 319.91
11-13 325.73
11-14 341.83
11-15 333.75
11-16 337.17
11-17 331.18
11-18 341.73
11-19 342.73
11-20 341.55
11-21 338.0
11-22 324.17
11-23 329.82
11-24 325.4
11-25 324.4
11-26 317.18
11-27 317.0
11-28 316.4
11-29 329.0
11-30 334.36
12-01 350.82
12-02 340.18
12-03 340.91
12-04 337.27
12-05 332.0
12-06 325.2
12-07 332.55
12-08 336.91
12-09 340.67
12-10 336.92
12-11 332.33
12-12 350.82
12-13 334.36
12-14 328.0
12-15 326.64
12-16 339.73
12-17 338.2
12-18 341.1
12-19 333.2
12-20 310.67
12-21 320.89
12-22 305.7
12-23 323.2
12-24 334.6
12-25 324.0
12-26 336.6
12-27 320.33
12-28 276.77
12-29 294.38
12-30 318.3
12-31 317.4

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index