… Roadway flooding is expected to return multiple times this week and could be just the start of a nightmare for the region during El Niño. According to a new report from the UC Davis Road Ecology Center, the high risk of flooding this winter threatens key infrastructure statewide. … The National Weather Service has issued a coastal flooding advisory in the Bay Area through Friday, warning that flooding along the bayshore will continue this week. At-risk locations include the shoreline of San Francisco Bay, Monterey Bay and San Pablo Bay, as well as low-lying areas bordering the ocean. … In an effort to protect the road, Highway 37 closed this past week for emergency construction after Gov. Gavin Newsom directed Caltrans to elevate the flood-prone sections. … The UC Davis report identified the problem that other key parts of Bay Area infrastructure, such as SFO, are built on former marshes.

Other El Niño news:

• Action News Now (Chico, Calif.): Newsom to sign order protecting Pacific Coast Highway from El Niño’s powerful storms
• The Appeal-Democrat (Marysville, Calif.): Sutter County, with its own history of deadly flooding, is making plans for El Niño
• UC ANR: Blog: UC ANR climate scientist Daniel Swain explains El Niño in fact sheet
• The Equation (Union of Concerned Scientists): Blog: Super El Niño and fossil fueled climate change are compounding record high sea levels in California. Here’s how​
• Daily Breeze (Hermosa Beach, Calif.): Editorial: Dam report underscores California’s poor priorities