Places California North Central Sacramento Area Outings Delta-Sacramento-Stockton-Napa-Berkeley California Sacramento-San Joaquin Delta North
last updated 4 Apr 2025

Today, the Delta is largely devoted to agriculture, and includes about 55 islands or tracts that are imperfectly protected from flooding by over 1,000 miles of levees mostly in the South.

Cities:
The larger cities Rio Vista, Walnut Grove, ... are above sea level.
THe elevation of Steamboat Slough at the Howard Landing Ferry, is 26 ft.
Location Population Elevation Tide
Rio vista 10,145 20 ft 4.4 ft
Iselton 777 10 ft 3 ft
Walnut Grove 970 10 ft 2.5 ft
Ryde 146 0 ft 2.5 ft
Howard Landing 2,533 6 ft 3 ft
Cortland 528 13 ft 3.7 ft
Hood 314
Sacramento 526,384 26 ft 1 ft
Links:
USGS for Sacramento R a Delta CA shows waterway elevation for a date.
Walnut Grove, Rio Vista, Steamboat Slough