Richardson Island facts for kids

Quick facts for kids
Richardson Island

USGS aerial imagery of the former location of Richardson Island
Richardson Island Location in San Francisco Bay Area Show map of San Francisco Bay Area Richardson Island Location in California Show map of California Richardson Island Location in the United States Show map of the United States
Geography
Location	Northern California
Coordinates	37°56′12″N 122°31′04″W / 37.93667°N 122.51778°W / 37.93667; -122.51778 (Richardson Island)
Adjacent bodies of water	San Francisco Bay
Highest elevation	16 ft (4.9 m)
Administration
United States
State	California
County	Marin

Richardson Island used to be a marshy island in the Sacramento–San Joaquin River Delta. Today, it is completely surrounded by land. You can find it in Marin County, California.

The island's exact location is 37°56′12″N 122°31′04″W / 37.93667°N 122.51778°W / 37.93667; -122.51778 (Richardson Island). In 1981, the United States Geological Survey measured its elevation. They found it was about 16 feet (or 4.9 meters) above sea level.