Hurricane Ida (2021): peak water levels
102 river and stream gauges and 9 tide gauges · Baton Rouge, Houma–Thibodaux, New Orleans and the Northshore, Mississippi Gulf Coast · August 28, 2021 to September 4, 2021
Against today's NWS flood stages, 28 of the 102 river and stream gauges here peaked at or above a flood stage (5 at major, 11 at moderate, 12 at minor). For 14 of them it is the highest peak in their comparable USGS record: Tchoutacabouffa River near D'iberville, Pearl River at I-10 near Slidell, Delacroix Canal near Caernarvon, Crooked Bayou northwest of Lake Cuatro Caballo near Delacroix, Davis Pond Freshwater Diversion near Boutte, Empire Waterway south of Empire and 8 more. The highest tide gauge reading was 6.91 ft above MHHW at Bay Waveland Yacht Club (Aug 29, 2021 at 10:54 PM CDT).
Tide gauges
| Tide gauge | Peak | Time | Against today's flood thresholds | Station record (NOAA) |
|---|---|---|---|---|
| Shell Beach | +6.85 ft | Aug 29, 2021 at 12:48 PM CDT | at or above NWS major | +9.37 ft (August 29, 2012) |
| Grand Isle | +4.88 ft | Aug 29, 2021 at 1:42 PM CDT | at or above NOAA major HTF | this storm |
| Pilots Station East, S.W. Pass | +4.01 ft | Aug 29, 2021 at 7:30 AM CDT | at or above NOAA major HTF | +5.54 ft (August 29, 2005) |
| Bay Waveland Yacht Club | +6.91 ft | Aug 29, 2021 at 10:54 PM CDT | at or above NWS moderate | +9.09 ft (September 1, 2008) |
| New Canal Station | +5.52 ft | Aug 30, 2021 at 6:06 AM CDT | at or above NWS moderate | +5.97 ft (August 30, 2012) |
| Pascagoula NOAA Lab | +3.84 ft | Aug 30, 2021 at 2:18 AM CDT | at or above NWS moderate | +6.98 ft (October 29, 2020) |
| Port Fourchon, Belle Pass | +3.09 ft | Aug 29, 2021 at 11:00 AM CDT | at or above NWS moderate | +3.40 ft (September 24, 2005) |
| Pilottown | +4.00 ft | Aug 29, 2021 at 8:30 AM CDT | — | +4.61 ft (August 29, 2012) |
| West Bank 1, Bayou Gauche | 3.84 ft | Aug 30, 2021 at 2:30 PM CDT | — | — |
Highest six-minute water level in the window, relative to mean higher high water (an ordinary high tide) on today's tidal datum.
River and stream gauges
Baton Rouge
| Gauge | Peak | Time | Against today's NWS flood stages | In its record |
|---|---|---|---|---|
| Tickfaw River at Liverpool | 12.73 ft | Aug 30, 2021 at 8:15 PM CDT | at or above major flood stage | highest since water year 2016 |
| Amite River at Highway 22 near Maurepas | 7.20 ft | Aug 29, 2021 at 11:30 PM CDT | at or above major flood stage | highest since water year 2012 |
| Tickfaw River at Holden | 18.82 ft | Sep 2, 2021 at 1:45 AM CDT | at or above minor flood stage | highest since water year 2016 |
| Tickfaw River at Montpelier | 16.45 ft | Sep 1, 2021 at 12:15 AM CDT | at or above minor flood stage | highest since water year 2016 |
| Amite River near French Settlement | 5.90 ft | Aug 30, 2021 at 10:30 PM CDT | at or above minor flood stage | highest since water year 2016 |
| New River Canal east of Sorrento | 5.41 ft | Aug 31, 2021 at 7:00 AM CDT | — | highest in 10 years of record |
| Beaver Bayou at Denham Road near Baton Rouge | 65.36 ft | Aug 30, 2021 at 1:45 AM CDT | — | highest since water year 2026 |
| Amite River at Magnolia | 40.20 ft | Sep 1, 2021 at 3:15 AM CDT | 7.8 ft below minor flood stage | highest since water year 2026 |
| Hurricane Creek at Baton Rouge | 36.70 ft | Sep 1, 2021 at 5:15 PM CDT | — | highest since water year 2026 |
| Ward Creek at Government St at Baton Rouge | 36.27 ft | Sep 1, 2021 at 4:15 PM CDT | — | highest since water year 2026 |
| Beaver Bayou at Wax Road near Baton Rouge | 31.92 ft | Aug 30, 2021 at 4:15 AM CDT | — | highest since water year 2026 |
| Comite River at Greenwell Springs Road near Baton Rouge | 27.65 ft | Aug 30, 2021 at 9:00 AM CDT | — | highest since water year 2026 |
| Jones Creek at Old Hammond Highway near Baton Rouge | 26.91 ft | Aug 30, 2021 at 12:15 AM CDT | — | highest since water year 2026 |
| Amite River near Denham Springs | 25.78 ft | Sep 1, 2021 at 10:45 PM CDT | 3.2 ft below minor flood stage | highest since water year 2026 |
| North Branch Ward Creek at Baton Rouge | 18.41 ft | Aug 29, 2021 at 11:00 PM CDT | — | highest since water year 2026 |
| Comite River at Point Hudson-Pride Road near Milldale | 15.35 ft | Aug 31, 2021 at 2:30 AM CDT | — | highest since water year 2026 |
| Ward Creek at Essen Lane near Baton Rouge | 13.24 ft | Aug 30, 2021 at 12:30 AM CDT | — | highest since water year 2026 |
| Claycut Bayou at Antioch Road near Baton Rouge | 12.07 ft | Aug 30, 2021 at 12:00 AM CDT | — | highest since water year 2026 |
| Dawson Creek at Bluebonnet Blvd near Baton Rouge | 12.03 ft | Aug 30, 2021 at 5:00 AM CDT | — | highest since water year 2026 |
| Beaver Bayou at Hooper Road near Baton Rouge | 9.85 ft | Aug 30, 2021 at 3:15 AM CDT | — | highest since water year 2026 |
| Black Bayou at Highway 621 near Prairieville | 8.14 ft | Aug 30, 2021 at 1:30 AM CDT | — | highest since water year 2023 |
| Old Ward Creek Diversion at Highland Road near Baton Rouge | 8.13 ft | Aug 30, 2021 at 6:45 AM CDT | — | highest since water year 2026 |
| Bayou Lafourche southwest of Donaldsonville | 8.09 ft | Aug 30, 2021 at 1:00 PM CDT | — | highest since water year 2026 |
| Grand Goudine at Babin Road near Duplessis | 8.05 ft | Aug 30, 2021 at 1:00 AM CDT | — | highest since water year 2025 |
| Bayou Fountain at Bluebonnet Blvd near B.R. | 7.84 ft | Aug 30, 2021 at 10:30 PM CDT | — | highest since water year 2026 |
| Amite River near Darlington | 7.65 ft | Aug 31, 2021 at 5:45 AM CDT | 10.3 ft below minor flood stage | highest since water year 2026 |
| Panama Canal at Highway 44 near Gonzales | 7.58 ft | Aug 30, 2021 at 5:30 AM CDT | — | highest since water year 2024 |
| Welsh Gully at J. Broussard Road near Prairieville | 7.48 ft | Aug 29, 2021 at 11:15 PM CDT | — | highest since water year 2026 |
| Bayou Manchac at Alligator Bayou near Kleinpeter | 7.32 ft | Aug 30, 2021 at 7:30 AM CDT | — | highest since water year 2026 |
| Henderson Bayou near Port Vincent | 7.24 ft | Aug 30, 2021 at 3:45 AM CDT | — | highest since water year 2020 |
| Bayou Manchac near Little Prairie | 6.96 ft | Aug 30, 2021 at 10:00 PM CDT | 3.0 ft below minor flood stage | highest since water year 2026 |
| Amite River at Port Vincent | 6.60 ft | Aug 30, 2021 at 11:30 PM CDT | 1.4 ft below minor flood stage | highest since water year 2026 |
| Alligator Bayou near Kleinpeter | 6.29 ft | Sep 5, 2021 at 10:30 PM CDT | — | highest since water year 2026 |
| Comite River near Zachary | 5.29 ft | Aug 31, 2021 at 6:00 AM CDT | — | highest since water year 2026 |
| Bluff Swamp near Kleinpeter | 5.00 ft | Sep 5, 2021 at 3:00 AM CDT | — | highest since water year 2026 |
| Black Bayou east of Gonzales | 4.50 ft | Aug 30, 2021 at 8:00 AM CDT | — | highest since water year 2020 |
| Comite River at Comite Dr near Baton Rouge | 4.22 ft | Aug 31, 2021 at 8:15 AM CDT | — | highest since water year 2026 |
| Bayou Francois at Highway 61 near Gonzales | 3.74 ft | Aug 29, 2021 at 11:30 PM CDT | — | highest since water year 2024 |
| New River north of Sorrento | 2.12 ft | Aug 30, 2021 at 6:15 AM CDT | — | highest since water year 2026 |
Houma–Thibodaux
| Gauge | Peak | Time | Against today's NWS flood stages | In its record |
|---|---|---|---|---|
| Bayou Lafourche at Lockport | 7.98 ft | Aug 29, 2021 at 6:45 PM CDT | — | highest in 19 years of record |
| Company Canal at Highway 1 at Lockport | 4.52 ft | Aug 29, 2021 at 6:45 PM CDT | — | highest in 24 years of record |
| Bayou Perot at Point Legard near Cutoff | 7.38 ft | Aug 29, 2021 at 1:45 PM CDT | — | highest since water year 2012 |
| Bayou Lafourche at Napoleonville | 6.36 ft | Aug 30, 2021 at 3:45 PM CDT | — | highest since water year 2026 |
| Bayou Lafourche at Thibodaux | 6.04 ft | Aug 30, 2021 at 1:30 AM CDT | — | highest since water year 2026 |
| Company Canal at Salt Barrier near Lockport | 4.53 ft | Aug 30, 2021 at 5:30 PM CDT | — | highest since water year 2008 |
| Caillou Lake (Sister Lake) southwest of Dulac | 3.76 ft | Aug 31, 2021 at 3:30 AM CDT | — | highest since water year 2026 |
| Caillou Bay southwest of Cocodrie | 3.39 ft | Aug 29, 2021 at 5:00 AM CDT | — | highest since water year 2026 |
| Belle River at Highway 70 near Pierre Part | 1.74 ft | Aug 31, 2021 at 7:15 PM CDT | — | highest since water year 2026 |
New Orleans and the Northshore
| Gauge | Peak | Time | Against today's NWS flood stages | In its record |
|---|---|---|---|---|
| Tangipahoa River at Robert | 23.12 ft | Aug 31, 2021 at 5:00 AM CDT | at or above major flood stage | highest since water year 2016 |
| Tchefuncte River near Folsom | 22.72 ft | Aug 31, 2021 at 12:30 AM CDT | at or above major flood stage | highest since water year 2016 |
| Bogue Falaya River near Camp Covington | 57.61 ft | Aug 30, 2021 at 5:30 PM CDT | at or above moderate flood stage | highest since water year 2016 |
| Tchefuncte River near Covington | 27.95 ft | Sep 1, 2021 at 1:15 AM CDT | at or above moderate flood stage | highest since water year 2016 |
| Bogue Chitto River at Franklinton | 16.23 ft | Aug 31, 2021 at 12:00 AM CDT | at or above moderate flood stage | highest since water year 2019 |
| Bogue Falaya River at Boston St. at Covington | 15.49 ft | Aug 30, 2021 at 10:00 PM CDT | at or above moderate flood stage | highest since water year 2016 |
| Tangipahoa River near Kentwood | 15.43 ft | Aug 30, 2021 at 6:45 PM CDT | at or above moderate flood stage | highest since water year 2016 |
| Bayou Liberty near Slidell | 9.02 ft | Aug 30, 2021 at 7:15 AM CDT | at or above moderate flood stage | highest since water year 2005 |
| Tangipahoa River near Amite | 21.40 ft | Aug 30, 2021 at 9:45 PM CDT | at or above minor flood stage | highest since water year 2016 |
| Pearl River near Bogalusa | 19.74 ft | Sep 4, 2021 at 7:30 AM CDT | at or above minor flood stage | highest since water year 2026 |
| Natalbany River at Baptist | 18.72 ft | Aug 30, 2021 at 10:00 AM CDT | at or above minor flood stage | highest since water year 2016 |
| Pearl River at Pearl River | 16.96 ft | Sep 3, 2021 at 1:45 AM CDT | at or above minor flood stage | highest since water year 2026 |
| Bogue Chitto River near Bush | 14.49 ft | Sep 1, 2021 at 9:30 AM CDT | at or above minor flood stage | highest since water year 2019 |
| Pearl River at I-10 near Slidell | 8.35 ft | Aug 30, 2021 at 2:00 AM CDT | at or above action stage | highest in 10 years of record |
| Delacroix Canal near Caernarvon | 14.46 ft | Aug 29, 2021 at 4:15 PM CDT | — | highest in 6 years of record |
| Crooked Bayou northwest of Lake Cuatro Caballo near Delacroix | 14.16 ft | Aug 29, 2021 at 4:00 PM CDT | — | highest in 23 years of record |
| Davis Pond Freshwater Diversion near Boutte | 13.87 ft | Aug 30, 2021 at 6:00 AM CDT | — | highest in 21 years of record |
| Empire Waterway south of Empire | 11.00 ft | Aug 29, 2021 at 1:00 PM CDT | — | highest in 9 years of record |
| Caminada Pass northwest of Grand Isle | 9.71 ft | Aug 29, 2021 at 11:15 AM CDT | — | highest in 9 years of record |
| Caernarvon Outfall Channel at Caernarvon | 8.87 ft | Aug 29, 2021 at 3:30 PM CDT | — | highest in 26 years of record |
| Tchefuncte River at Madisonville | 8.55 ft | Aug 30, 2021 at 12:45 AM CDT | — | highest in 10 years of record |
| L Pontchartrain at Crossover 4 near Mandeville | 6.73 ft | Aug 29, 2021 at 11:00 PM CDT | — | highest in 10 years of record |
| Airline Canal at Blind River near Gramercy | 4.07 ft | Aug 31, 2021 at 11:45 PM CDT | — | highest in 6 years of record |
| Pearl River at Pools Bluff near Bogalusa | 62.26 ft | Sep 4, 2021 at 2:15 PM CDT | — | highest since water year 2026 |
| East Pearl River at I-59 near Nicholson | 25.27 ft | Sep 1, 2021 at 7:30 PM CDT | — | highest since water year 2026 |
| Abita River north of Abita Springs | 24.29 ft | Aug 30, 2021 at 11:15 AM CDT | — | highest since water year 2024 |
| Bogue Falaya at Covington | 24.11 ft | Aug 30, 2021 at 11:00 PM CDT | — | highest since water year 2003 |
| Tangipahoa River near Ponchatoula | 19.39 ft | Aug 31, 2021 at 11:30 AM CDT | — | highest since water year 2016 |
| Mississippi River at Belle Chasse | 16.76 ft | Aug 29, 2021 at 12:15 PM CDT | — | highest since water year 2025 |
| Reggio Canal near Wills Point | 10.99 ft | Aug 29, 2021 at 5:00 PM CDT | — | highest since water year 2012 |
| Lake Cataouatche at Whiskey Canal south of Waggaman | 10.79 ft | Aug 29, 2021 at 8:30 PM CDT | measured on an earlier datum: not compared | — |
| Barataria Waterway at Mud Lake south of Lafitte | 9.06 ft | Aug 29, 2021 at 8:30 AM CDT | — | highest since water year 2020 |
| Barataria Bay near Grand Terre Island | 7.77 ft | Aug 29, 2021 at 9:45 AM CDT | — | highest since water year 2012 |
| Little Lake near Bay Dosgris east of Galliano | 7.62 ft | Aug 29, 2021 at 9:45 AM CDT | — | highest since water year 2020 |
| Y-Pipeline Canal in Bayou Sauvage NWR at New Orleans East | 5.97 ft | Aug 30, 2021 at 12:30 PM CDT | — | — |
| Rigolets at Highway 90 near Slidell | 5.49 ft | Aug 29, 2021 at 2:15 PM CDT | — | highest since water year 2024 |
| Naomi Diversion Canal near Naomi | 2.44 ft | Aug 28, 2021 at 12:45 PM CDT | — | highest since water year 2026 |
Mississippi Gulf Coast
| Gauge | Peak | Time | Against today's NWS flood stages | In its record |
|---|---|---|---|---|
| Biloxi River at Wortham | 24.69 ft | Aug 31, 2021 at 7:30 AM CDT | at or above major flood stage | highest since water year 2026 |
| Tchoutacabouffa River near D'iberville | 15.96 ft | Aug 30, 2021 at 10:00 PM CDT | at or above moderate flood stage | highest in 12 years of record |
| West Hobolochitto Creek near Mcneill | 19.79 ft | Aug 30, 2021 at 1:45 PM CDT | at or above moderate flood stage | highest since water year 2026 |
| East Hobolochitto Creek near Caesar | 19.61 ft | Aug 31, 2021 at 1:00 AM CDT | at or above moderate flood stage | highest since water year 2026 |
| Wolf River at Belle Ferry Road near Long Beach | 12.56 ft | Aug 31, 2021 at 9:45 PM CDT | at or above moderate flood stage | highest since water year 2026 |
| Jourdan River near Bay St Louis | 9.46 ft | Aug 31, 2021 at 11:45 AM CDT | at or above moderate flood stage | highest since water year 2026 |
| Wolf River near Landon | 27.06 ft | Aug 31, 2021 at 11:00 AM CDT | at or above minor flood stage | highest since water year 2026 |
| Pascagoula River at Merrill | 22.27 ft | Sep 4, 2021 at 9:45 AM CDT | at or above minor flood stage | highest since water year 2026 |
| Pascagoula River at Graham Ferry | 16.29 ft | Sep 2, 2021 at 3:15 PM CDT | at or above minor flood stage | highest since water year 2026 |
| Escatawpa River at I-10 near Orange Grove | 8.53 ft | Aug 31, 2021 at 7:15 PM CDT | at or above minor flood stage | highest since water year 2017 |
| Biloxi River near Lyman | 20.52 ft | Aug 31, 2021 at 2:15 PM CDT | — | highest since water year 2026 |
| Red Creek at Vestry | 17.62 ft | Sep 1, 2021 at 2:15 AM CDT | — | highest since water year 2026 |
| Mississippi Sound at USGS Merrill Shell Bank Light | 9.16 ft | Aug 29, 2021 at 10:30 PM CDT | — | — |
| East Pearl River at Csx Railroad near Claiborne | 8.43 ft | Aug 29, 2021 at 11:15 PM CDT | — | — |
| Biloxi Bay at Point Cadet Harbor at Biloxi | 6.36 ft | Aug 30, 2021 at 1:30 AM CDT | — | — |
| Mississippi Sound at USGS Round Island Light | 6.24 ft | Aug 29, 2021 at 7:45 AM CDT | — | — |
| Old Fort Bayou at Ocean Springs | 5.92 ft | Aug 30, 2021 at 2:00 AM CDT | — | highest since water year 2018 |
Highest gage height in the window: from USGS's 15-minute record where it exists, otherwise the gauge's USGS annual peak when that fell in the window (a date only). Flood stages are the National Weather Service's current ones, which can differ from those in use at the time. Peaks USGS records on an earlier datum are listed but not compared.
How this page is built
Each gauge's highest reading between August 28, 2021 and September 4, 2021 (the window runs past the rain because large rivers crest days later), from USGS and NOAA records, for the gauges this site carries today in Baton Rouge, Houma–Thibodaux, New Orleans and the Northshore, Mississippi Gulf Coast. Gauges installed since are not listed; a gauge out of service at the time has no row. Harris County's own gauges are not included: this site has their readings only from September 2026. Readings only: this page says nothing about damage or what happened at any street or property.
Every historic flood on this site · Storms since September 2026