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WT Staff

Thursday, June 6, 2024
NWS: Severe thunderstorms developing in the west

June 6, 2024 updated 454 pm EDT

Drinking Water Advisories
A BWA was issued Tuesday for some areas in the Village of Champlain, including customers connecting at 100 to 137 South St, 1 Northern Tier Way Buildings #1-6, 860 to 888 Route 11 and 1064 Route 9.

Hazardous Weather Outlook for west interior NYS issued 337 am by NWS Binghamton

There is a chance for strong to severe thunderstorms to develop and move from west to east starting in the late morning through the late afternoon. The best chance for severe storms will be east of the Finger Lakes with strong to damaging winds as the main threat. Heavy downpours are expected to accompany these storms, allowing for a small chance of flash flooding, especially across flood prone areas. If you have outdoor plans, be sure to have multiple ways to receive warnings from the National Weather Service.

Impacting Northern Oneida-Yates-Seneca-Southern Cayuga-Onondaga-Steuben- Schuyler-Chemung-Tompkins-Madison-Southern Oneida-Cortland-Chenango-Otsego-Tioga-Broome-Delaware-Sullivan Counties in New York

WT USA Flows and Flood Tracker provisional data from the network of USGS streamflow monitors

Sixty-four floodings are showing active on the USA network of the USGS Waterwatch Thursday, down from one hundred and thirty-two yesterday. WT USA tracks streamflow monitors in four states, New York, Ohio, Georgia and Louisiana. As of this report, Long Island records two sites above 99th percentile flow level, Ohio has five locations in extreme high flow, one of these in action stage looking to flood. Eleven active flood sites are monitored in Louisiana.

Watershed Region 1: Bayou Bodcau Lake and Caddo Lake are flooding near Shreveport and Mooringsport, respectively. Bayou Dorcheat continues to flood near Springhill and downstream at Minden. To the south into Region 4 watershed, border river Sabine carries on flooding near Logansport, approaching moderate flood stage three and a half feet above the channel and still rising near Burkeville, two and a half feet over near Bon Wier and a foot over the channel in the lower end near Ruliff. East Region 4 Calcasieu River runs two and a half feet over near Glenmora and four inches over near Oberlin station. To the south in Region 5 watershed, Mermentau River is a hair over flood stage at Mermentau. Vermilion Bay is no longer flooding at Cypremort Point. See black tags indicating flood flow volume and gauge height, blue tags for 99th percentile flows updated daily here.

Current Streamflows from the network of USGS river monitors in NYS
The drying trend has become widespread over this week with fewer sites recording the seasonal normal Thursday. In spite of this general dry condition, Long Island is experiencing three monitored locations above the 99th percentile, including Valley Stream and Bellmore Creek. East Meadow Brook is running 96th percentile. More to follow.

Drought Map
New York drought map has filled in dramatically overnight through the areas we have pointed out all week, the upstate interior west and north watersheds rated below normal. Lake Ontario minor tributaries west section in Niagara, Orleans and west Monroe Counties retains the status of moderate hydrologic drought overnight, Lower Genesee River, Lake Ontario minor tributaries central section, Mohawk River and Susquehanna River watersheds debut at below normal Thursday. St. Lawrence and Upper Hudson Rivers continue below normal. In the southwest, Allegheny River watershed has regathered Chautauqua County to join Cattaraugus County area rated below normal. In the west interior, Oswego River-Finger Lakes watershed area rated below normal has grown. Updates are in progress. 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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