Introduction

WTLA reports federal, state and regional source data on stream flows, groundwater levels, oil and other hazardous materials spill incidents by watershed, along with reporting hazardous algae blooms, algal toxin alerts at recreational freshwater bodies and in drinking water reservoirs. Information in this report is presented in the watershed area of occurrence, based on the location given by the source.

Flows: information is collected from the USGS WaterWatch site, presenting Louisiana’s rivers and creeks according to USGS Current Streamflow monitoring stations. The report describes each watershed by the flow of its main rivers and tributary streams, starting at the headwaters and reporting for each station down the line to the outlet in the Gulf of Mexico. 

• Rivers, and creeks flowing much above normal or high (in the top 10% of flow volume recorded for that system) are shown in boldface;
• flows that have breached action stage appear in red,
• and flows in flood stage appear in boldface red type.

WTLA offers a monthly updated snapshot of Louisiana’s flowing surface water. Flow levels change rapidly, check your local upstream monitoring stations at the USGS WaterWatch Current Streamflow and sign up for high water alerts.

Groundwater Monitor: USGS Groundwater Watch is our source for monitoring groundwater levels in test wells around the state. Test wells are listed in this report by watershed and updated monthly from USGS groundwater measurements, given in feet and inches from the surface down to the water level. The higher the measurement, the lower the water level in the test well.

Impaired Water Bodies (IWB) 303d List

The Clean Water Act (CWA) Section 303(d) Program provides a mechanism for integration of implementation efforts to restore and protect the nation’s aquatic resources. Through this process the nation’s waters are assessed, restoration and protection objectives are systematically prioritized, and Total Maximum Daily Loads (TMDLs) and alternative approaches are adaptively implemented to achieve water quality goals with the collaboration of State and Federal agencies, tribes, the regulated community, and the public.

New Vision of the CWA 303(d) Program

A new long-term vision for assessment, restoration, and protection under the CWA 303(d) Program for 2016 through 2022 (new vision) has been described whereby states may identify and prioritize watersheds for these restoration and protection efforts under the CWA 303(d) Program. The primary goals of this new vision of the CWA 303(d) Program include prioritization, assessment, protection, alternatives, engagement, and integration. The new vision will guide the realization of our clean water goals in a manner that recognizes lessons learned from the past two decades of CWA 303(d) Program implementation and addresses new challenges with innovative solution.

Hazardous Algae Blooms (HABs) Beach Alerts

Cyanobacteria are commonly referred to as ­blue-green algae; dense accumulations of toxin-producing cyanobacteria are referred to as “hazardous algae blooms”. Toxins may be present both before and after cyanobacteria are observed. WTLA posts the latest HABs reports around the state in the watersheds where they occur.

Spills

Spill Emergency:

Call Louisiana State Police at 1-225-925-6595 within 1 hour of the spill incident.

call LSP HAZ MAT hotline at 1-877-925-6595 or 225-925-6595

*The hazardous materials hotline is staffed by the Right-to-Know Unit and is the reporting point to the LSP for a chemical spill or emergency. Any transporter, manufacturer, storage facility, or anyone involving the handling of any regulated hazardous material must contact the LSP immediately to report any spillage or threat to public safety.

National Response Center (NRC) at 1-800-424-8802

24-hour emergency line staffed by US Coast Guard for oil spills on water.

An emergency spill situation is defined as any condition that could reasonably be expected to endanger the health and safety of the public or cause significant adverse environmental impacts.

For non-emergency spills:

Call the Louisiana Department of Environmental Quality (DEQ) 24-hour Hotline at 1-225-342-1234

Or, SPOC office line 1-225-219-3640 (within 24 hours of the spill, follow up with a written report in 7 days)

_DEQ-CustomerServiceCenter@la.gov

Louisiana's oil spill rules generally follow federal standards.

Any unauthorized spills of one barrel (42 gallons) of oil or more is considered the reportable amount. These and spills of unknown amount must be reported to DEQ within 24 hours, or in the case of an emergency event, see above, call State Police immediately.

All reportable spills (emergency or not) must be followed up within 7 days with a written report. Consult with LA DEQ for guidance on detailing your spill incident, check the national requirements for reporting oil spills, and LA release notification requirements. Seek out information on Spill Prevention Planning.

 “oil” includes but is not limited to: gasoline, crude oil, fuel oil, diesel oil, lubricating oil, sludge, oil refuse, oil mixed with wastes, and any other petroleum-related product.

“chemical” spills include all toxic substances, note “Any transporter, manufacturer, storage facility, or anyone involving the handling of any regulated hazardous material must contact the LSP immediately to report any spillage or threat to public safety.” Refer to LA Department of Health Environmental Epidemiology and Toxicology page for more information on reporting (https://ldh.la.gov/page/834)

Note that all spills must be cleaned up, whether or not they are reportable.

The OEC Surveillance Division protects the citizens of the state by conducting inspections of permitted and non-permitted facilities, by responding to environmental incidents such as unauthorized releases, spills and citizen complaints, natural disasters, and other emergency situations, by providing compliance assistance to the regulated community when appropriate, by assessing and monitoring air and water quality for compliance with standards, and by promoting case information management for vigorous and timely resolution of issues of non-compliance. 

 WTLA gathers data from LA DEQ, LADH, USGS WaterWatch, USGS Groundwater Watch, the National Weather Service, National Oceanographic and Atmospheric Administration (NOAA) sources. Our accuracy is dependent on these sources. 

Louisiana’s landscape tilts rainfall and runoff southward into the Gulf of Mexico.

Find your location in one of the eight watersheds of the state.

Region 1

The Red River collects rainfall and runoff from 57,000 square miles of northern Texas, Oklahoma and Arkansas before entering Louisiana’s Caddo Parish. The Red River and tributaries gather runoff from Caddo Parish, Bossier Parish, Webster Parish, the west half of Claiborne Parish, Red River Parish, deSoto Parish, Natchitoches Parish, the east edge of Sabine Parish, the south half of Winn Parish, the west half of Grant Parish and the northwest corner of Rapides Parish.

Water Bodies include Caddo Lake, Nantachie Lake, Cypress Lake, Bodcau Lake, Swan Lake, Half Moon Lake, Lake Ninock

Flows

• Red River drains an area of 57,000 sq miles of Arkansas, Texas and Oklahoma before entering LA’s Caddo Parish. Red River continues south through LA, draining the bounded area known as LA Watershed Region 1. 
• flow north of the border at Spring Bank, AR is 32.8% above mean, 5990 cfs and 13 ft deep (flood stage 37 ft);
• flow near Hosston has been monitored for just one year, as such, the flow is unrated, 9.65 ft deep.
• at Shreveport, unrated, 13.88 ft deep (flood stage 30 ft)
• at L&D #5 unrated, 121.08 ft deep
• at Coushatta, unrated, 25.05 ft deep (flood stage 31 ft)
• at L&D #4, near Red Oak, unrated 120.44 ft deep
• updated 07-05-22)

• Bodcau Bayou drains an area of 410 sq miles of Arkansas before entering Caddo Parish. The flow is monitored
• at Springhill, unrated, 1.7% above mean, 4.26 cfs and 3.77 ft deep
• At Sarepta, unrated, 2.56 ft deep. (updated 07-19-22)
• Twelvemile Bayou drains 3137 sq miles of Caddo Parish. The flow near Dixie is unrated, 9.62 ft deep.
• Cypress Bayou Lake receives drainage from an area of 163 sq miles in Caddo Parish. The flow
• near Keithville the flow is normal, 12% above mean at .53 cfs and .59 ft deep;
• near Benton is 8.81 ft deep. (updated 07-19-2022)
• Saline Bayou drains an area of 154 sq miles of Bienville Parish. The flow near Lucky is normal, 53.95% at 28.3 cfs and 3.59 ft deep. (updated 07-19-22)

• Caddo Lake receives the drainage for 2744 sq miles in Caddo County.
• at the dam near Mooringsport, unrated, 168.71 ft deep (flood stage 172 ft) (updated 07-19-22)
• Bayou Pierre drains an area of 879 sq miles in Caddo Parish. The flow
• at Shreveport, unrated, 3.66 ft deep
• near Lake End is normal, 60.7% above mean at 167 cfs and 5.57 ft deep.
• near Powhatan 11.69 ft deep (updated 07-19-22)
• Cross Bayou at Hwy 80 west of Greenwood, 1.86 ft deep (07-05-22)
• McCain Creek near Blanchard, 1.03 ft deep (updated 07-19-22)
• Nantachie Lake, Nantachie Creek, reservoir draining 80 square miles of Grant Parish, flowing southeast to join the Red River.
• Flow near Aloha is 2.61 ft deep (07-06-22)
• Black Bayou drains an area of 177 sq miles of Caddo Parish. The flow at Rodessa is unrated, 10.73 ft deep. (updated 07-19-22, 2022)

Groundwater Monitor

Caddo Parish Groundwater station ID#4201 Cd-462

• The depth to water is 5.8 ft (most recent measurement, May 10, 2022) Red River Alluvial Aquifer, with well depth of 64 ft. Elevation 145.42 ft above NGVD29 (WTLA update 07-19-22) 

Caddo Parish Groundwater station ID#4801 Cd-336

• Depth to water 18.38 ft (measured July 12, 2022)
• Latitude 32°42'07", Longitude 93°48'48" NAD27
  Caddo Parish, Louisiana, Hydrologic Unit 11140202
• Well depth: 86.0 feet Hole depth: 97.0 feet
  Land surface altitude: 182.47feet above NGVD29.
  Well completed in "Alluvial aquifers" (N100ALLUVL) national aquifer.
  Well completed in "Red River Alluvial Aquifer" (112RRVA) local aquifer

(update 07-19-22)

Impaired Water Bodies EPA 303d list (coming soon)

Hazardous Algal Blooms Beach Alerts (coming soon)

Spills (coming soon)

Region 2

The Dugdemona River and its tributaries drain Region 2 down to Catahoula Lake, joining the Red River as it heads down to the Gulf. The northern mid-line of Region 2 features includes flows into the Caney Creek Reservoir on the west side of the drainage basin with Little River taking flows on the eastern side of the basin. Region 2 includes the southern part of Lincoln Parish, the east side of Bienville Parish, most of Jackson Parish, the majority of Winn Parish to its eastern border, the west half of Caldwell Parish, the east half of Grant Parish, all of Lasalle Parish, most of Catahoula Parish to the south border, all but the northwest corner of Rapides Parish, and the north part of Avoyelles Parish. 

Flows

Flood-sensitive areas in this drainage basin include the southwest quarter of Hodge, the east side of Jordan Hill, the centre and east side of Deville, the centre of Pineville, and the south of Centre Point. Parts of Rapides Parish and the majority of Avoyelles Parish are extremely vulnerable to overland flooding.

Water bodies include Catahoula Lake, Caney Creek Reservoir.

• Dugdemona River drains an area of 740 sq miles in Jackson Parish. The flow
• near Jonesboro is not rated, 3.22 ft deep
• near Joyce is unrated, 4.7% above mean at 5.59 cfs and 4.66 ft deep;

(updated 07-19-22)

• Little River drains an area of 1899 sq miles of Caldwell and LaSalle Parishes. The flow
• At Rochelle, unrated, 6.64 ft deep;
• near Rochelle is below normal, 8.7% above mean, 38.4 cfs and 4.92 ft deep (flood stage 32 ft) (updated 07-19-22)

• Big Creek drains an area of 51 sq miles of the east side of Grant Parish. The flow at Pollock is normal, 79.65% above mean, 22 cfs and 2.69 ft deep, (updated 07-19-22)

Groundwater Monitor

• Avoyelles Parish station ID #0101 Av-5399Z
• Depth to water 9.12 ft as of the most recent measurement, June 4, 2022
• Well depth 170 ft. 45 ft above sea level.
• Part of the Mississippi River Alluvial aquifer.
• WTLA report updated 07-19-22

Avoyelles Parish station ID#2901 Av-164

Impaired Water Bodies EPA 303d list (coming soon)

Hazardous Algal Blooms (HABs) Beach Alerts (coming soon)

Spills (coming soon)

 Region 3

The Tensas River originates in East Carroll Parish flowing in and out of Lake Providence in northeast Louisiana. The Tensas drainage basin begins in Arkansas just south of Little Rock and widens out in Louisiana to drain East Carroll Parish, Madison Parish and Tensas Parish on the east side of Region 3.

Ouachita River drains the central portion of Region 3, Corney Bayou and tributaries draining the west side. 

Flows

• Tensas River drains an area of 957 sq miles of Tensas Parish. The flow
• At Tendal is normal, 28.7% above mean at 39.4 cfs and 7.02 ft deep (flood stage 25 ft);
• SE of Tendal is unrated, down a couple of inches this week to 5.13 ft;
• South of Newlight (USGS 07369649) is unrated, down two inches this week, 34.32 ft deep (flood stage 55 ft); (updated 07-20-22)
• Ouachita River drains an area of 15298 sq miles of Ouachita Parish. The flow
• At Sterlington is unrated, 57.14 ft deep
• near West Monroe is unrated, 12.9% above mean at 1270 cfs and 21.41 ft deep as of 07/20/22.
• Little Corney Bayou drains an area of 208 sq miles of Union Parish. The flow near Lillie (USGS 07366200) is normal, 5.1% above mean at 2.92 cfs and down four feet this week, 2.05 ft deep as of 07/20/22
• Bayou Lafourche drains an area of 361 sq miles in Richland Parish. The flow
• near Crew Lake is normal, 12.93% above mean at 114 cfs and down four feet, .79 ft deep;
• near Alto is down three and a half feet, 35.47 ft deep. (updated 07/20/22)

Groundwater Monitor

• Franklin Parish Groundwater station ID#2001 FR-682
• depth to water level is 23.64 ft as of the most recent measurement April 4, 2022. (No change to report as of 07/20/22)
• Latitude 31°55'38", Longitude 91°44'20" NAD27
  Franklin Parish, Louisiana, Hydrologic Unit 08050001
• Well depth: 90 feet Hole depth: 90 feet
  Land surface altitude: 65feet above NGVD29.
  Well completed in "Mississippi River Valley alluvial aquifer" (N100MSRVVL) national aquifer; "Mississippi River Alluvial Aquifer" (112MRVA) local aquifer

Impaired Water Bodies EPA 303d list (coming soon)

Hazardous Algal Blooms (HABs) Beach Alerts (coming soon)

Spills (coming soon)

Region 4

Draining the western half of DeSoto Parish, all but the eastern-most sliver of Sabine Parish, all of Vernon Parish, the west slice of Rapides Parish, all of Beauregard Parish and the west half of Allen Parish, the vast majority of Calcasieu Parish (the east bit is found in Region 5), the northwest corner of Jefferson Davis Parish and the west half of Cameron Parish.

• Bayou Anacoco drains an area of 365 sq miles in Vernon Parish. The flow

near Rosepine is normal 33.95% above mean at 66.6 cfs and 3.41 ft deep. (updated Jul 20, 2022)

• Bundick Creek drains an area of 120 sq miles of Beauregard Parish. The flow
• at DeRidder is below normal, 19.4% above mean at 16.6 cfs and 2.66 ft deep. (flood stage 20 ft)
• at Spillway near DeRidder, unrated 6.02 ft deep (flood stage 97 ft)(updated Jul 20, 2022)
• Calcasieu River drains an area of 1700 square miles of Rapides Parish and Allen Parish. The flow
• Near Glenmora is below normal, 18.5% above mean, 31.4cfs and 4.99 ft deep (flood stage 12 ft);
• near Oberlin is much below normal, 12.7% above mean 38.9 cfs and 1.15 ft deep (flood stage 13 ft)
• near Kinder is normal, 38.5% above mean, 375 cfs and 2.12 ft deep (flood stage 16 ft) (gages reading the same as last week);
• at I-10 near at Lake Charles, unrated 1.75 ft deep, 31.4ºC and 14000 µS/cm
• at Cameron equipment malfunction
• (updated Jul 20, 2022)

Groundwater Monitor

• Vernon Parish Groundwater station ID#4301 V-652
• depth to water level is 43.39 ft as of the last measurement, taken May 23, 2022. (updated 07/20/22)
• Latitude 30°56'26", Longitude 93°12'43" NAD27
  Vernon Parish, Louisiana, Hydrologic Unit 08080204
• Well depth: 160 feet, Hole depth: 160 feet
  Land surface altitude: 210 feet above NGVD29.
  Well completed in "Coastal lowlands aquifer system" (S100CSLLWD) national aquifer.
  Well completed in "Evangeline Aquifer" (121EVGL) local aquifer

Impaired Water Bodies EPA 303d list (coming soon)

Hazardous Algal Blooms (HABs) Beach Alerts (coming soon)

Spills (coming soon)

Region 5

Draining a large part of Rapides Parish (centre), the southern two-thirds of Avoyelles Parish, the west side slice of Pointe Coupee Parish, the eastern-most slice of Allen Parish, all of Evangeline, all of St. Landry, all of Acadia Parishes, the southeast corner of Calcasieu Parish, the majority of Jefferson Davis Parish (south), all of Lafayette Parish, all of St. Martin Parish, the westernmost slice of Iberville Parish, the majority of Cameron Parish (east) all of Vermillion Parish, all if not most of Iberia Parish, most of St. Mary Parish.

Here the Mississippi River clears the Old River Works dropping down 22 feet to meet the flow of the Red River, combining to reach one million cubic feet per second flow volume. From here we have a new river, called Atchafalaya. This legendary flow deposits sediment from the central plains over the final 150 miles to the Gulf of Mexico.

Flows

• Red River flows into Avoyelles Parish where the Old Man River lock distracts the Mississippi River into the Atchafalaya River. USGS WaterWatch does not display monitoring stations on the lower portion of the Red River.
• Atchafalaya River officially begins at Simmesport, Louisiana, taking in the combined drainage flows from the Red River and Mississippi River, 87570 square miles.
• Flow at Simmesport is unrated, 44.8% above mean at 116000 cfs and down three feet, 8.7 ft deep.
• At Melville, unrated, down two and a half feet, 5.81 ft deep;
• At Butte La Rose (USGS 07381515), 5.93 ft deep (flood stage 20 ft)

(updated 07/20/22)

Groundwater Monitor

• Avoyelles Parish Groundwater station ID#4401 depth to water, at 8.73 ft below surface at last measurement, 4/6/2022 (updated here 7-20-22)

Impaired Water Bodies EPA 303d list (coming soon)

Hazardous Algal Blooms (HABs) Beach Alerts (coming soon)

Spills (coming soon)

Region 6

Draining parts of Pointe Coupee Parish (centre), West Baton Rouge Parish, Iberville Parish, a tiny corner of Iberia Parish (southeast), a wee slice of west Ascension Parish, all of Assumption Parish, the south parts of St. James and St. John the Baptist Parishes, the eastern-most parts of St. Martin and St. Mary Parishes, all of Terrebonne Parish, all of Lafourche Parish, the south half of St. Charles Parish, the south part of Jefferson Parish, the west side of Plaquemines Parish and a tiny corner of Orleans Parish.

Flows

• Mississippi River drains an area of 1.13M sq miles. The flow at New Orleans is unrated, 4.26 ft deep.
• Bayou Grand Caillou drains an area of Terrebonne Parish. The flow at Dulac is unrated, 86% above mean at 81.1 cfs and 1.22 ft deep. (updated Jul 12, 2022)
• Bayou Teche drains an area of St. Martin Parish. The flow
• at Keystone L&D near St. Martinville is normal, 83.1% above mean flow at 301 cfs and 10.16 ft deep; (updated 07-20-22)

· Bayou Lafourche drains an area of Lafourche Parish. The flow at

• Thibodaux is above normal, 189% above mean at 442 cfs and 3.01 ft deep; (updated 07-20-22)

Groundwater Monitor

Iberville Parish USGS #4701- Ib-6965Z

Latitude 30°22'41", Longitude 91°24'47" NAD83
Iberville Parish, Louisiana, Hydrologic Unit 08070300

Well depth: 170 feet
Hole depth: 170 feet
Land surface altitude: 15 feet above NAVD88.
Well completed in "Mississippi River Valley alluvial aquifer" (N100MSRVVL) national aquifer.
Well completed in the "Mississippi River Alluvial Aquifer" (112MRVA) local aquifer

Depth to water, 1.73 ft as of Apr 4, 2022 (updated here Jul 20, 2022)

Impaired Water Bodies EPA 303d list (coming soon)

Hazardous Algal Blooms (HABs) Beach Alerts (coming soon)

Spills (coming soon)

Region 7

Draining parts of West Feliciana, East Feliciana Parishes, all of St. Helena Parish, all of Tangipahoa Parish, all of Washington Parish, all of East Baton Rouge Parish, all of Livingston Parish, all of St. Tammany Parish, part of Iberville, part of Ascension Parish, St. John the Baptist, St. James and St. Charles Parishes.

Flows

• Pearl River drains an area of sq miles in Parish. The flow
• Near Bogalusa is normal, 63% above mean at 3000 cfs and down more than a foot, 8.38 ft deep (flood stage 18ft)
• At Pool Bluffs near Bogalusa is unrated, 56.8 ft deep;
• At Navigation Canal Lock and Dam No. 3 is unrated, 23.02 ft deep;
• At Navigation Canal Lock and Dam No. 2 is unrated, 25.86 ft deep;
• At Navigation Canal Lock and Dam No. 1 is unrated, down eleven feet to 18.21;
• At NSTL station, discharge – 733 cfs, down more than a foot, .53 ft deep.
• At I-10 near Slidell, unrated, 4.29 ft deep. (flood stage 10 ft)
• (updated 07-20-22)
• Bogue Chitto River drains an area of 990 sq miles in Washington Parish. The flow
• At Franklinton, .82 ft deep (flood stage 12 ft)
• Near Bush is normal, 93.1% above mean at 1060 cfs and 3.59 ft deep (flood stage 11 ft). (updated 07-20-22)
• Tangipahoa River drains an area of 646 sq miles in Tangipahoa Parish. The flow
• At Osyka, MS is unrated, 96.6% above mean at 204 cfs and 8.53 ft deep;
• at Kentwood is unrated, down slightly this week, 2.58 ft deep (flood stage 13 ft);
• near Amite is unrated, down a couple of inches, 4.93 ft deep (flood stage 21 ft);
• at Robert is normal, 100.5% above mean at 653 cfs and down nearly two feet, 7.41 ft deep (flood stage 15 ft);
• near Ponchatoula, unrated, 5.87 ft deep (updated Jul 20, 2022)
• Natalbany River drains an area of 79.5 sq miles in Tangipahoa Parish. The flow
• at Baptist is normal, 66.9% above normal, 28.7 cfs and 4.48 ft deep (flood stage 16 ft) (updated 07-20-22)
• Tickfaw River drains a 247 sq mile area in Livingston Parish. The flow
• At Liverpool is normal, 64% above mean at 42.9 cfs and 1.7 ft deep; (flood stage 9 ft)
• At Montpelier, unrated, 87.8% above mean at 217 cfs and 3.42 ft deep (flood stage 13 ft);
• at Holden is above normal, 123.4% above mean, 220 cfs and down three and half ft, 1.77 ft deep. (flood stage 15 ft) (updated Jul 20, 2022)
• Ponchartrain at Crossover 4 near Mandeville, -.41 ft deep (updated 07-20-22)
• Tchefuncte River drains an area of 103 sq miles of St. Tammany Parish.The flow
• near Folsom is unrated, 5.85 ft deep (flood stage 16 ft)
• near Covington is unrated, 10.05 ft deep (flood stage 20ft)
• at Madisonville, unrated, -.01 ft (updated 07-20-22)
• Comite River drains an area of 284 sq miles of East Feliciana Parish and East Baton Rouge Parish. The flow
• near Olive Branch is unrated, -1.19 ft. (flood stage 19 ft)
• near Baker, unrated, 1.01 ft deep
• At Pt. Hudson-Pride Rd near Milldale is unrated, 40.9% above mean at 61.7 cfs and 12.96 ft deep.
• near Zachary, unrated 2.77 ft deep
• near Comite is above normal, 130.7% above mean, 238 cfs and -.04 ft deep. (flood stage 20 ft)
• at Comite Dr near Baton Rouge, unrated, 1.42 ft deep.
• at Hooper Rd, unrated, 1.12 ft deep (updated 07-20-22)
• Beaver Bayou drains an area in East Baton Rouge Parish. Flow at
• At Denham Rd near Baton Rouge is unrated, 29 ft deep
• At Wax Rd near Baton Rouge is unrated, 27.36 ft deep
• At Hooper Rd near Baton Rouge is unrated, .78 ft deep
• Amite River drains an area of 1775 sq miles of East Baton Rouge. The flow
• near Darlington is normal, 99.7% above mean at 488 cfs and -.29 ft deep; (flood stage 18 ft)
• at Grangeville, unrated 17.87 ft deep (flood stage 35 ft);
• at Magnolia, unrated 28.07 ft deep (flood stage 48 ft)
• near Denham Springs is above normal, 140.2% above mean at 959 cfs and 11.44 ft deep (flood stage 29 ft deep)
• near French Settlement, unrated, .57 ft deep, flood stage 4ft
• at Hwy 22 near Maurepas, unrated 1.22 ft deep, (flood stage 4 ft)
• (updated 07-20-22)

Groundwater Monitor

Tangipahoa Parish USGS test well #2701 TA-772

Depth to water 15.31 ft as of the latest measurement, Jan 25, 2022

Latitude 30°38'35", Longitude 90°18'27" NAD83
Tangipahoa Parish, Louisiana, Hydrologic Unit 08070205

Well depth: 1355 feet, Hole depth: 1360 feet
Land surface altitude: 133.00feet above NGVD29.

Well completed in "Coastal lowlands aquifer system" (S100CSLLWD) national aquifer, "Covington Aquifer" (120CVGN) local aquifer

(updated here 07-20-22)

Impaired Water Bodies EPA 303d list (coming soon)

Hazardous Algae Blooms (HABs) Beach Alerts (coming soon)

Spills (coming soon)

Region 8

Draining parts of St. Charles, Jefferson, Orleans, Plaquemines and St. Bernard Parishes

Water Bodies include Lake Ponchartrain, Rigolets Strait, Lake Borgne

Flows

• Mississippi River flow measured at Venice, unrated, .68 ft deep. (updated 07-20-22)
• Crooked Bayou (estuary) drains an area of Plaquemines Parish. The flow NW of Lake Cuatro Caballo near Delacroix is unrated, 4.72 ft and 29.6ºC and 1280 µS/cm.
• Black Bay (estuary) near Stone Island, near Pointe-a-la-Hache, is unrated, 5.56 ft deep, 29.3 ºC and 20000µS/cm.
• Empire Waterway south of Empire is unrated, 5.6 ft deep, 29.9ºC and 21900 µS/cm.

Groundwater Monitor

USGS #4001 Or-175

Latitude 30°05'25", Longitude 89°46'40" NAD27
Orleans Parish, Louisiana, Hydrologic Unit 08090203

Well depth: 449 feet
Hole depth: 547 feet
Land surface altitude: 10.00feet above NGVD29.
Well completed in "Coastal lowlands aquifer system" (S100CSLLWD) national aquifer.
Well completed in the "Gonzales-New Orleans Aquifer" (112GZNO) local aquifer

Record for this site is maintained by the USGS Louisiana Water Science Center

Depth to water 17.45 ft as of Feb 8, 2022 (WTLA update Jul 13, 2022)

Impaired Water Bodies EPA 303d list (coming soon)

Hazardous Algae Blooms (HABs) Beach Alerts (coming soon)

Spills (coming soon)