See how the US 'patched' the highest dam in California

The risk of breaking the Oroville dam, California, has decreased but police chief Butte County, California state - Mr. Kory Honea, on February 15 warned people they are still in an "emergency" situation.

A series of trucks and helicopters poured 1,200 tons of rock / hour in the last few days in an effort to "patch" the emergency discharge road - heavily eroded - of Oroville Dam . "This is a proactive way to handle the eroded area. There are many people, many equipment, many materials are brought by helicopters and trucks" - Mr. Bill Croyle, head of the State Department of Water Resources California, revealed.

In the repair area, there are more than 125 groups of workers, 40 trucks and 3 helicopters mobilized. Captain Dan Olson, spokesman for the California Department of Forestry and Fire Protection, said authorities used unmanned aircraft to monitor repairs.

Oroville smashing is fast.(Photo: Sacbee).

Ready-made ice bags.(Photo: KCRA).

According to Mr. Croyle, water in Oroville Lake continued to be discharged into parallel "patching". The purpose of water discharge is to allow Oroville Lake to "suck" water when storms come on the night of February 15 (local time). Next week is forecast to have 3 more storms towards California state.

However, Mr. Croyle expressed confidence that the upcoming unburnt storms would be Oroville dam and the repair continued until the land and wind situation did not allow.

One of the dangers to repair is unauthorized use of unmanned aircraft."If they (people) use unmanned aircraft in the area, they will hinder the helicopter. If you hinder the helicopter, you slow down the damming process" - an official added. .

Helicopters and trucks dump 1,200 tons of rock / hour down the eroded area.(Photo: Sacbee)

Along with helicopters, trucks also rushed to transport stones to eroded places of emergency discharge lines.(Photo: Sacbee)

Ho continued to flush.(Photo: Los Angeles Times).

Crane trucks spread stones due to trucks pouring down the pit before the cement was covered.(Photo: Sacbee).

Vehicles transporting materials go continuously around the clock.(Photo: Sacbee).

The patching process is being carried out at the fastest speed.(Photo: Sacbee).

Earlier, on February 12, nearly 200,000 residents of Oroville, California, received an emergency evacuation order because the dam was in danger of breaking, flooding the area.

On February 14, evacuation orders were lifted. At the end of the day, US President Donald Trump approved federal emergency assistance for the state of California to repair Oroville.

The water in Oroville Lake is being discharged, the water level has been reduced by more than 6cm.(Photo: Sacbee).

The emergency discharge of Oroville Dam is interrupted by erosion.(Photo: Sacbee).

In the repair area, there are more than 125 groups of workers, 40 trucks and 3 helicopters mobilized.(Photo: Sacbee).

A series of trucks and helicopters poured 1,200 tons of rock / hour in recent days in an effort to "patch" the emergency discharge road.(Photo: Sacbee).

The pit collapses on the discharge road of Oroville Dam.(Photo: California Department of Water Resources)