Barnett Reservoir increases discharge
Barnett Reservoir officials increased discharge at the dam Saturday morning to 40,000 cubic feet per second to slow down a rise on the lake in advance of a Wednesday crest on the Pearl River.
In a morning conference call with the National Weather Service, the Lower Mississippi River Forecast Center in Slidell, the U.S. Army Corps of Engineers and the City of Jackson, the Pearl River Valley Water Supply District said the move was necessary to stop a rise in the 33,000 acre lake northeast of Jackson.
All participants agreed that the discharge level should be maintained for 24 hours, with another conference call scheduled for 9:30 a.m. on Sunday.
The National Weather Service is forecasting a crest of 34 feet in Jackson on Monday night, which will cause some street flooding. The forecast is based on inflows, past rainfall and predictions for the next 48 hours. PRVWSD adjusted the discharge from 30,000 to 35,000 feet Friday night and then to 40,000 at 5 a.m., and at 10 a.m. it appeared the lake was cresting at 298 feet (above sea level).
Heavy rainfalls throughout the upper Pearl River Basin and on Barnett Reservoir caused an immediate rise of the river and the lake. The peak inflow of water into the reservoir is forecast at 43,900 cubic feet per second on Wednesday. By increasing discharge, the plan is to lower the lake before the peak inflow to create storage capacity
and reduce the ultimate river crests at downriver locations.
The public can track river forecasts online at the websites:
Ross Barnett Reservoir