Heavy rains triggered flash flooding Friday across Steuben County, washing out roads, closing bridges, swelling rivers and streams, and filling residents' yards and basements with standing water.

Heavy rains triggered flash flooding Friday across Steuben County, washing out roads, closing bridges, swelling rivers and streams, and filling residents’ yards and basements with standing water.

A great deal of damage occurred when streams and creeks overflowed, and culverts and ditches couldn’t handle the excess water, leading to road washouts, said Tim Marshall, director of the Steuben County Office of Emergency Management.

There were roads and bridges affected by flooding in at least 10 towns in Steuben County.

“I think once you start adding up all the municipalities, we’re going to have substantial dollar losses in some of these areas,” Marshall said.

The Steuben County Department of Public Works and many town DPWs who don’t normally work on Fridays put in overtime to clean up and begin repairing the damage, Marshall said.

“I’d say Prattsburgh definitely got hit the hardest,” Marshall said. “They had multiple roads that were affected, and they had probably the heaviest rain. They had 2 inches of rain (Tuesday night) when Penn Yan got hit, and then they got almost 3 inches (Friday), so they really got affected the worst.”

There were a lot of calls about flooded basements across the county, and local volunteer firefighters were out Friday assisting homeowners.

Local gorges, rivers and streams were muddy and churning with branches and other debris floating downstream.

A flood warning remained in effect until this morning for the Cohocton River in the Campbell area.

The Chemung River, while well above normal levels, was never considered a threat to overflow the flood walls, Marshall said.

A large empty tank washed away from a farm in the Town of Erwin and made its way down the Chemung River, crashing loudly into the piers of the Patterson Bridge and the Bridge Street Bridge in downtown Corning.

There were entire trees floating downstream in the Chemung River.

Several school districts in Steuben County closed early Friday due to the flooding.

There were no storm-related injuries or power outages reported, Marshall said.

The following roads and bridges were still closed or affected by flooding as of late Friday afternoon, according to the Steuben County Office of Emergency Management:

• Avoca: State Route 415 closed between Owens Road and Michigan Hollow.
• Urbana: Lower East Lake Road closed from Gateway Lane to Silvernail Road.
• Prattsburgh: Fisher Road and Waldo Road.
• Hartsville: Slate Creek Bridge.
• Canisteo: Carson Bridge closed, and County Route 119 just east of the County Route 14 intersection.
• Campbell: County Route 125 near Wood Road Bridge.
• Rathbone: County Route 110 near County Route 119.

Some of the roads may remain closed through the weekend, and the bridges will have to be inspected before they can reopen, Marshall said.

In Penn Yan and parts of Yates County which were devastated by storms and flooding overnight Tuesday, Friday’s rain caused more flooding and road closures, according to Yates County Sheriff Ron Spike.

A state of emergency remained in effect for parts of Yates County, as well as a boating advisory for Keuka Lake, which has high water levels and floating debris.

As of Friday morning, 11 homes in Penn Yan and two in the Town of Jerusalem were classified as severely damaged by inspectors from the storm earlier this week. An American Red Cross shelter at Penn Yan Academy remains open.