|
12/27/2023
WT Staff
HAPPENING NOW
NWS Fog advisory lifted
Big Creek flooding at Alpharetta
Wednesday, December 27, 2023 - last updated 822 pm EST
Streamflow situation from USGS Waterwatch gages throughout Georgia
Big Creek is no longer flooding at Alpharetta. Satilla River is still rising at Atkinson, St Marys River is still flooding at MacClenny, FL and Folkston GA, see black location tags on the map for flow details.
USGS monitoring stations in the northeast are flowing much above normal, down from the extreme high flow 99th percentile values yesterday. There are currently no gauges sending extreme low flow values anywhere in the state.
See black location tags on the map for flood, blue tags for 99th percentile high flow details.
Drought Map USGS 7-day average streamflow compared with historic average
Drought area has expanded and intensified over the holidays with Upper Flint, Upper Coosa and Tallapoosa watersheds in the Mississippi basin accelerated to to severe hyrdologic drought rating.
Severe drought rated areas are stepped down to below normal rating Wednesday as the 7-day average streamflows catch up with the current streamflow situation. Coosa River watershed's Whitfield and Murray Counties are no longer rated severe drought, recovering flow levels along with Tallapoosa watershed's Haralson and Carroll Counties, currently rated below normal. The Upper Flint River watershed has dropped the severe drought rating overnight from Clayton County to Taylor County, this morning rated moderate hydrologic drought.
The Upper Chattahoochee River watershed experienced extreme high flows from the headwaters to Fulton County yesterday. As of this update, flows are no longer extreme high, rated much above normal or above the 90th percentile. As a result of these high streamflow values of the last 24 to 36 hours, the 7-day average increased rapidly enough to kick the Upper Chattahoochee River watershed clear off the drought map. The Middle Chattahoochee watershed area from Douglas - South Fulton to northwest Muscogee County is stepped down from moderate drought to below normal this morning. The rest of the way down the Chattahoochee River drainage area is still rated below normal to the state line Seminole County. Flint River watershed shifts from moderate drought rating to a strip rated below normal in the north half of Schley, Marion Counties, and back to moderate drought in South Marion and Schley. Lower Flint River watershed falls off the drought map at Dougherty County.
In the Atlantic basin, the Upper Savannah River watershed, also experiencing record high flows over the last 24 to 36 hours, has lost the moderate drought rating from Rabun to Hart County, no longer rated on the drought map. Lower Savannah River watershed is still rated below normal from Banks - Franklin to south Wilkes -Lincoln counties today. Upper Ocmulgee and Upper Oconee watersheds are still rated below normal as they have been since Friday last week.
USGS seven-day average streamflows at each monitoring location are rated against the historic average flow volume for this day. Results appear on the drought map, showing surface area with a rating: below normal, moderate drought, severe drought or extreme drought. The drought-rated surface area most often follows watershed lines, the physical topography of drainage and direction of flow of the surface water across the state. The watershed layer on the map shows surface area impacted by streamflows in each drainage area. Turn the directional arrows on to see which way the water flows, along with hazardous spills reported in the area that could have an impact on water quality.
Hazardous Spills files released from Georgia Department of Environmental Conservation
Search is underway for the latest spill incident reports released by Georgia EPD. More to follow today.
Spills reported here previously include the tractor trailer unit saddle tank rupture in Dekalb that caused a spill of 100 gallons of diesel fuel on a highway near Lawrence. A large sewage spill is considered anything over 10 thousand gallons. Last week a large spill was reported in Atlanta, 15000 gallons of sewage is reported spilled on Kenora Drive. No impact to waterways reported in connection with that spill.
HABs update from Georgia Department of Natural Resources - Coastal Resources Division Shellfish and Water Quality Unit
Two permanent beach advisories remain in effect on Jekyll Island including Jekyll Clam Creek Beach on the north end and St Andrews Beach on the south end. Lab tests on October 16 samples show the enterococcus bacteria levels below the health advisory threshold. Clam Creek Beach came in at 20 cfu per 100 ml and 7 cfu per 100 ml for St Andrews.
Public notification of the location of harmful algal blooms helps to protect pets, swimmers and waders from venturing into areas with known HABs and helps recreational water users find clear access points on state water bodies. Observations of HABs can be reported here by email, info@wtga.us for public notification on our map and through SMS alerts. The identity of the reporting party is not included in our notifications. Include a photo and location geo-tag so that the bloom can be accurately placed on the map and confirmed by local authorities.
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.
|
|
|
All rights reserved 2024 - WTNY - This material may not be reproduced in whole or in part and may not be distributed,
publicly performed, proxy cached or otherwise used, except with express permission.
|
| 
| ABOUT 
