Search results
Results From The WOW.Com Content Network
Flood control structures spared parts of Los Angeles County from destruction, while Orange and Riverside Counties experienced more damage. [15] The flood of 1938 is considered a 50-year flood. [16] It caused $78 million of damage ($1.69 billion in 2023 dollars), [16] making it one of the costliest natural disasters in Los Angeles' history. [17]
Downtown Los Angeles received 4.1 inches (100 mm) of rain on February 4, 2024, marking it the wettest day since March 15, 2003. Several Malibu, California schools were closed due to inaccessibility because of severe weather causing road closures. [14] Power outages caused by the storms left approximately 850,000 people without power.
For river systems, a 100-year flood is generally expressed as a flowrate. Based on the expected 100-year flood flow rate, the flood water level can be mapped as an area of inundation. The resulting floodplain map is referred to as the 100-year floodplain. Estimates of the 100-year flood flowrate and other streamflow statistics for any stream in ...
Explore current groundwater conditions in this interactive map: Patterns emerged. Many of the communities most exposed to flooding were built along historical creeks or on top of filled-in wetlands.
Periods of heavy rainfall caused by multiple atmospheric rivers in California between December 31, 2022, and March 25, 2023, resulted in floods that affected parts of Southern California, the California Central Coast, Northern California and Nevada. [3] [4] The flooding resulted in property damage [5] [6] [7] and at least 22 fatalities. [1]
Updated maps from Williamson County show an increase of 6,000 structures in the 100-year flood plains. The last information available was from 1994.
The term 100-year flood indicates that the area has a one-percent chance of flooding in any given year, not that a flood will occur every 100 years. [ 2 ] Such maps are used in town planning , in the insurance industry, and by individuals who want to avoid moving into a home at risk of flooding or to know how to protect their property.
This $60 million data project could unmask the notoriously opaque world of California water. California is finally digitizing its 100-year-old paper water rights. Why that’s a big deal