6/26/2024
WT Staff
 HAPPENING NOW
Wednesday, June 26 2024
NWS: Severe thunderstorms for NYC
June 26, 2024 1003 am EDT
Hazardous Weather Outlook issued by National Weather service New York 419 am Wed June 26
There is a slight risk for severe thunderstorms late today into this
evening. The main threat is damaging winds, with large hail possible.
Current Streamflow Situationfrom the network of USGS streamflow gauges in NYS
Northeast streamflows have come down overnight, running mostly above normal, 75th to 89th percentile. The highest flows on the board midweek are 90th to 93rd percentile in Black River and St Lawrence River watersheds with one instance of 90th percentile flow remaining in Lake Champlain watershed. West interior, central and southward basins are mostly seasonal normal, the lower portion of west state flows remain below normal. The lowest flow level recorded Wednesday is 2nd percentile in the upper basin of Niagara River - Lake Erie watershed. As of this reporting, there are no active floods, no 99th percentile extreme high flows or 1st percentile extreme low flows in our reference network.
The drought map appears as reported yesterday, Lake Ontario minor tributaries west section remains in extreme drought condition with adjacent Niagara River - Lake Erie watershed rated below normal.
From The Sensors provisional data on river flooding from the network of USGS streamflow monitors
Seventy-three streamflow gauges indicate flooding in the USA Wednesday, down from seventy-four Tuesday. The majority of these floods are occurring in Minnesota, Wisconsin, South Dakota and Nebraska. Within the WT coverage area New York, Ohio, Georgia and Louisiana, one last location records flow above flood stage, that being on Sabine River in Louisiana.
Louisiana: Region 4 border river Sabine continues to run over flood stage in the lower channel near the outlet in Gulf of Mexico. Flow recorded near Ruliff, TX has not changed in the last two days, still showing provisional reading of seven inches above the channel. Provisional reading to be confirmed, more to follow. Water level at the flood site and flow volume are updated daily, see the black tag here.
Drinking Water Advisories
Seneca Falls came under a BWA Friday following repair of a water main. The BWA impacted those customers connecting north of the canal, extending west to Rumsey Street. Seneca Falls WTP operates with permit NY4901198, serves a population of 9400 residential customers from a surface water source in Cayuga Lake. The Town of Seneca Falls operates with permit NY490011, the 2023 Annual Water Quality report states 9000 served from a raw water intake in Cayuga Lake, 25 feet below the surface. As Cayuga Lake is noted with active HAB reports, WT will track microcystins test results here. More to follow.
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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