NewsLocal News

Actions

Test-blasting operations at Isabella Lake

Posted
and last updated

The U.S. Army Corps of Engineers Sacramento District and its contactor Flatiron/Dragados/Sukut Joint Venture will conduct test-blasting operations as part of the Isabella Dam Safety Modification Project on Thursday, November 15 starting at 12 p.m., forcing a short-term closure of Highway 155 near the main dam.

Additional test-blasting will also occur on November 21 and November 28, however specific times have not been determined.

Production blasting is expected to begin in mid-December and will clear out rock for construction of a new emergency spillway between the main and auxiliary dams.

Construction flaggers will be present to provide traffic control during blasting operations.

Audible warning signals will alert the public of an impending blast and will signal when the operation is complete.

Five Minute Warning – a one-minute series of long horn blasts

One Minute Warning – a series of short horn blasts

All Clear – one long horn blast

,

Weather

Daily Forecast

View Hourly Forecast

Day

Conditions

HI / LO

Precip

Wednesday

04/30/2025

Partly Cloudy

87° / 61°

0%

Thursday

05/01/2025

Partly Cloudy

86° / 61°

2%

Friday

05/02/2025

Sunny

89° / 60°

1%

Saturday

05/03/2025

AM Clouds/PM Sun

76° / 52°

24%

Sunday

05/04/2025

Cloudy

66° / 56°

15%

Monday

05/05/2025

Partly Cloudy

78° / 58°

2%

Tuesday

05/06/2025

Sunny

83° / 60°

4%

Wednesday

05/07/2025

Sunny

84° / 61°

0%