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8/13/2024
WT Staff
 August 13, 2024 updated 258 pm CDT
New Orleans East Bank, Abbeville BWAs
Orleans Parish: New Orleans East Bank has once again been subjected to a Boil Water Advisory, the second incident in less than a week. Yesterday's BWA was brought on by a water main break. The boil order applies to customers connecting along Hayne Blvd. from Read Blvd. to Paris Road; customers along Paris Rd. from Hayne Blvd to the north side of I-10 Service Rd; customers connecting along the north side of I-10 Service Rd. from Paris Rd to Read Blvd; and Read Blvd. customers from Hayne Blvd. to north side I-10 Service Rd. A recent power outage caused by a mylar balloon resulted in a BWA for New Orleans East and West Banks, along with Algiers Point.
Vermilion Parish: Parish seat Abbeville drinking water customers served by the Magnolia Plantation Water System experienced a system outage due to a pump failure yesterday. Magnolia Plantation scored an A grade from Louisiana Department of Health in 2023 with a 97% test result. The LDOH scores all drinking water facilities, municipal and privately owned, based on performance, customer complaints, maintenance and operations, financial stability and compliance with the EPA Safe Drinking Water Act.
Fifty sites in the streamflow network of the USGS indicate active flood mode in the USA Tuesday with ten locations recording flooding in Georgia. Drinking water infrastructure is often impacted by flooding, boil advisories are also issued when water mains break, when new lines are installed, when the water pressure drops for any reason, pump failure or power failure. WT brings the boil water advisories to our maps in yellow tags, do not consume orders in red tags. Watch for water advisories in your local area, be sure to boil water for minimum of one minute at a rolling boil to sanitize from potential microbiological contamination.
WT HAB Tracker from state sources and where available, the satellite monitoring program of the NOAA National Centers for Coastal Ocean Science
Louisiana: The latest upload from the NCCOS was captured August 12 at moderate wind speed 5.3 mph. Lac des Allemands continues to increase in concentration, the west bay joining the center and southeast hot spots at 3 million cells per 100 ml or more.
See the latest Louisiana HAB report here.
New York
The number of active HABs confirmed in NYS has dropped by forty overnight as reports made prior to July 30 have been moved to the 2024 HAB archives. No new reports have been confirmed since last week Friday, we expect more to be added to the notifications dashboard today, more follow.
Impacted water bodies are listed here.
The latest image in from NCCOS was snapped August 12, completely cloud obscured. The previous image captured Aug 11 showed a sliver of the Baie Missisquoi HAB with high concentration in the league of 800 to 900 thousand cells per 100 ml. The August 10 image is completely clear, we see here the Baie Missisquoi HAB filling the northeast water and the channel south into the west channel past North Hero Island at a consistent concentration 900 thousand to 1 million cells per 100 ml. A clear image of August 7 showed a hot spot of extreme high concentration at the northeast shoreline, another at the center of the bluegreen bloom down the lake near Alburg Springs, up to 3 million cells per 100 ml on that day, no longer so high in concentration. The widespread HAB in St. Albans Bay appears to have shrunk down to a large localized HAB on the west side at low concentration, less than 100 thousand cells per 100 ml. Lake Carmi in Vermont lakewide HAB concentration is up, 1 to 2 million cells per 100 ml. The latest satellite images of Lake Champlain from the NCCOS are here.
Lake Erie west basin: Ohio, Michigan
The latest image from NCCOS was captured August 12 at a high surface wind speed 13 mph, a clear view of the Lake Erie HAB with Maumee Bay State Park hot spot increasing in concentration and extent, now wrapping around Cedar Point National Wildlife Refuge 3 million cells per 100 ml on both sides of Cedar Point. North Maumee Bay has hot spots up to 2 million cells concentration. Get a look at the Lake Erie HAB here.
California: The new bluegreen bloom report was expected Friday afternoon ahead of the weekend, not yet available as of this update Tuesday. We connected with EPA staff in Big Valley Pomo Tribe for an update on Clear Lake, a statement on the summer season and recent annual Tule Boat Festival is forthcoming, more to follow.
Last week's Recent Bloom report dated August 2 featured seven water bodies with DANGER level advisories, including Lago Los Osos, Lake Chabot, Lake Anza, Discovery Bay, Contra Loma Reservoir, Big Break Regional Shoreline and Copsey Creek. Three water bodies have been posted with HAB Warning level advisories over the last week, including Discovery Bay, Tahoe Keys and San Luis Reservoir's Dinosaur Point Boat Launch. Caution advisories have been activated for another 31 sites. See the California HAB tracker report with advisories by watershed region, HAB DANGER and WARNING advisories are pinned to the map with bluegreen tags, the full list is here.
Georgia:
Georgia's Jekyll Island and St. Simons Island beaches continue to meet the safety threshhold for bacteria Monday morning. Two permanent advisories for Jekyll Island also tested clear for bacteria in the last quarterly water sample taken July 1, 2024. As of this report, all other St Simons Island and Jekyll Island beaches are tagged in green, indicating water meets the safety guidelines for bacteria. No new information has been found on the presence of HABs in Georgia since our last update. Georgia Environmental Protection Division does accept reports from the public of suspicious algal blooms. As we receive updates from EPD, the results will be found here. The latest Georgia beach advisories are available here.
See the North American drainage basin map here, scroll all the way down to see how surface water moves across the continent into the Pacific, Atlantic, Gulf of Mexico and Arctic Oceans. WT Media Group tells the story of water in three countries, Canada, USA and Mexico. See the drinking water advisories, hazardous spills, floods, drought and harmful algal blooms plotted on the maps, as the water flows. Check out the CrimeBox for historic prosecutions under the Clean Water Act, the Safe Drinking Water Act box for details on public drinking water facilities, interviews with the scientists and tech developers on the leading edge of clean water technology here.
As many drinking water facilities are supplied from surface water reservoirs, the streamflow situation is pertinent to both drinking water supply and quality. High flows can stir up sediment and cause turbidity in the reservoirs, requiring additional treatments to render the water potable. Low flow volume is linked to warmer temperatures in the reservoir and can be an issue for water quality where HABs are present. WT tracks streamflow trends with an eye to the impacts on drinking water supply and quality in each of the state's watersheds. Check the watershed layer on the map to see the direction of flow and streamflows that may be impacting drinking water today.
Harmful Algal Blooms: WT follows the movement and growth of harmful algal blooms (HABs) as provided by the satellite monitoring program of the NCCOS for New York's Lake Champlain, Ohio's Lake Erie and Louisiana's Lake Pontchartrain and surrounding area. Interpretation of satellite images is best in clear conditions at wind speed less than 4 mph, where the appearance and extent of HABs is reliably matched to a color scale for concentration. HABs are known to produce algal toxins of concern for raw drinking water sources and recreational water bodies. Plan beach access to avoid HABs and consider carrying a rapid test kit to detect the toxin microcystins.
US EPA Health Advisories for public drinking water specify the maximum threshhold for two common algal toxins, microcystins and cylindrospermopsins, liver toxins produced by cyanobacteria. Note these levels are health advisories, not legally enforceable regulatory limits. Two levels are identified, separating the population by age. The first level applies to pre-school aged children, the second level applies for those age 6 and up. The EPA health advisory gives the maximum level of toxin that would not produce negative health impacts over a ten day period. For microcystins, .3 ug/L under 6 yrs old; 1.6 ug/L for 6 and older. For cylindrospermopsins, the toxin associated with the HAB Aphanizomenon the level for preschoolers is .7 ug/L, for those 6 and up, 3 ug/L.
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