Marina del Rey, CA Coastal Erosion Rate
Is the coast eroding 1.1 miles west of Marina del Rey, CA?
The coast 1.1 miles west of Marina del Rey, CA is actually gaining ground, not losing it: USGS's transects measure 1.04 feet of accretion a year here, sediment building up rather than washing away. At that rate, the shoreline has gained roughly 10.4 feet over the last decade.
What this reading actually covers
This is a roughly 3.5-mile stretch of coast, not one address or parcel - USGS's own transects run every few hundred feet, but that's finer than any one property needs, so this page reports the stretch nearest Marina del Rey, CA. Centered near 33.98°N, 118.47°W. Survey years: 1852-2016, method LRR, from USGS's California shoreline-change assessment. That's how current the data is here, real, but not a live feed, since a shoreline survey is a major undertaking, not an annual check-in.
25 years at this rate
Holding the 1.04 ft/yr accretion rate 1.1 miles west of Marina del Rey, CA for 25 years would add roughly 26 feet of shoreline, again assuming nothing about the local sediment supply changes.
How solid is this number
37 transects feed this segment's number; 0% of them individually measured retreat. The published margin on this reading runs ±0.44 ft/yr. Among the 1211 US coastal segments with a measurable trend, this one ranks 1115 for erosion, 1 being the fastest-retreating coast in the dataset. Source: USGS National Shoreline Change data release (ScienceBase, DOI 10.5066/P94J0K7Z), Kratzmann 2024 / Data Report 1187. Chincoteague, VA sits at national rank 1119 for growth (1.09 ft/yr), one reference point among the 1211 scored segments, 2407 miles from here. 2.2 miles up the coast, Santa Monica, CA shows 1.85 ft/yr of accreting.
One address near Marina del Rey: the Coastal Change Hazards Portal zooms past this stretch to the underlying map.