Agua Mansa

California wrote the book on ghost towns, from Gold Rush tent cities to Owens Valley farm towns the aqueduct dried up.

Agua Mansa (Spanish for "gentle water") is a former settlement in an unincorporated area of San Bernardino County, near Colton, California, United States. Once the largest settlement in San Bernardino County, it is now a ghost town. Only the cemetery remains. The town was established in 1842 in early California, then known as Alta California. It was on the Santa Ana River, across from the era settlement of La Placita. Agua Mansa and La Placita were the first non-native settlements in the San Bernardino Valley.

The on-the-ground condition of Agua Mansa is unverified — it's listed here with unknown status. That could mean standing buildings, or an empty field. Go prepared for either, and consider sharing what you find so the record improves.

Nobody has confirmed the access situation, so treat any visit as reconnaissance: verify land ownership first, and be ready to admire from the road.

Here's the honest truth: access to Agua Mansa is unverified. We couldn't confirm whether the site sits on public land, private property, or something in between — so verify land ownership and local rules before visiting, and respect private property at all times.

Ghost-town etiquette is simple: take only photographs. Removing artifacts is illegal on public lands and disrespectful everywhere else — and on federal land it can be a serious offense.