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7/10/2024
WT Staff
 HAPPENING NOW
Wednesday, July 10 2024
St Tammany Parish BWA
July 10, 2024 updated 157 pm CDT
Drinking Water Advisories
St Tammany Parish: Bayou Liberty Water Association has issued a BWA for customers on Dubbuisson Rd, Gwin Rd, Torregano Rd, Sue St, Rue Len Vir, Harbor Rd & Treasure Cove. The advisory was applied yesterday with no reason given. Bayou Liberty Water is a privately owned utility operating a community water system in St. Tammany Parish. Bayou Liberty scores a rating of A, 100% on the Louisiana Department of Health Drinking Water Grading system. The facility provides potable water to a residential population of more than ten thousand customers from a groundwater well source.
Union Parish: Some water customers in Rocky Branch experienced a BWA Monday, the order impacting all connections south of the intersection of Roan Road and LA-143. Rocky Branch Water scored a perfect 100%, earning an A on the 2023 Louisiana Department of Health Water Grading system. Public water systems provide water for human consumption to at least 15 service connections or 25 average people per day for at least 60 days per year. Rocky Branch serves a population of 1410 residents from a groundwater source since 1974.
HAB Tracker satellite monitoring program of the NOAA National Centers for Coastal Ocean Science
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.
New York
Lake Champlain's Baie Missisquoi HAB is clearly visible in the latest satellite image from NCCOS dated Monday July 8, a high concentration bloom stretching from north shore in Canada to the shore of Missisquoi National Wildlife Refuge on the US side of the border. This HAB appears to match the color scale for a concentration around 900 thousand cells per 100 ml standard sample in the south end, reaching an extreme high concentration 2 million cells per 100 ml along the north shore in Canada. A prior image captured Friday July 5 showed even higher concentration, 3 to 4 million cells per 100 ml. Seventy-eight HABs are confirmed by NYS Department of Environmental Conservation Wednesday morning, up from sixty-two Tuesday morning. First HABs of the season have been confirmed for Saratoga Lake, Oquaga Lake, Canandaigua Lake, Plymouth Reservoir and Fort Pond with additional or subsequent HAB reports confirmed at multiple locations in Chautauqua Lake and Beaver Dam Lake. A complete list with location descriptions is found here.
Louisiana: Southeast LA water bodies are captured in a wide angle pass by the Copernicus-Sentinel III satellite, catching Lake Pontchartrain to Black Bay in frame. The latest image was captured July 9 at a surface wind speed 9.9 mph. This latest image is partially cloud obscured, a very high concentration HAB 2 million cells per 100 ml is visible in Wetland Watchers Park south of Lake Pontchartrain. Updates are in progress, the most recent HAB report for Louisiana is available here.
Ohio: Lake Erie west basin is captured by the NCCOS monitoring satellite, the latest upload taken July 9 at surface wind speed 3.4 mph. The image is mostly cloud obscured, the widespread HAB mass at the international border shows between clouds at a concentration around 600 thousand cells per 100 ml. In the previous image captured July 8, the massive HAB from Toledo inner Maumee Bay is seen stretching out approximately 17 nm up the Michigan shoreline and extending fifteen plus miles into open water of Lake Erie. The North Maumee Bay and Michigan bloom retain a hot spot of extreme high concentration south of Monroe near shore, around the 2 million cells per 100 ml sample. Sandusky Bay HAB appears unchanged in position and extent in the July 8 image compared to July 7 position, at a slightly lower concentration by July 8. Updates are in progress. The latest Ohio HAB report is 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.
USGS Provisional Data Statement
Data are provisional and subject to revision until they have been thoroughly reviewed and received final approval. Current condition data relayed by satellite or other telemetry are automatically screened to not display improbable values until they can be verified.
Provisional data may be inaccurate due to instrument malfunctions or physical changes at the measurement site. Subsequent review based on field inspections and measurements may result in significant revisions to the data.
Data users are cautioned to consider carefully the provisional nature of the information before using it for decisions that concern personal or public safety or the conduct of business that involves substantial monetary or operational consequences. Information concerning the accuracy and appropriate uses of these data or concerning other hydrologic data may be obtained from the USGS.
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