Investigators asked that question for weeks after January’s storm. The answer involved San Diego’s biggest crises.

A brush fire broke out in Santee on Sunday afternoon ... Get top local stories in San Diego delivered to you every morning. Sign up for NBC San Diego's News Headlines newsletter.

The Sierra Club is suing the Imperial Irrigation District over its latest Colorado River water conservation agreement, ...

The city says the San Diego County Sheriff’s Department will conduct the background checks through appointments by calling 858-974-2222. Santee City Council approved cannabis manufacturing ...

A man who shot 15 people at a Santee High School in 2001 had his first parole ... were studying the impacts of toxic gas connected to sewage from the Tijuana River. UC San Diego Researcher Doctor ...

After three decades of proposals by developers, court cases, and federal intervention, in 2005 the Tijuana River National Estuarine ... Imperial Beach, and San Diego.

The City of San Diego has secured millions in grant money to help clear out encampments along the San Diego River. The largest one is known as the “island” with about 40 inhabitants.

Extreme heat in South San Diego worsens air quality due to Tijuana River Valley pollution, prompting indoor stay advisory.