Flood Risk and
Neptune Drive
San Leandro Facilities and Transportation
Committee
May 5, 2023
Flood Control District
2 Alameda County Flood
Control District formed in
1949. Many improvements
were completed by the mid
1960s
HUD FIRM 1974
3 1968 National Flood Insurance Act
Virtually no insurance is purchased
1970 Only 16 flood insurance policies
have been sold.
1973 Flood Insurance Protection Act
(requires insurance in high risk zones)
First flood hazard map for San Leandro
published in 1974 – no high risk areas
identified.
FIRM: Flood Insurance Rate Map – typically identifies locations of high flood risk FEMA FIRM 1980
4 1979 FEMA created
1980 Bonaire Park and James Madison
Elementary School are within 100 year
flood boundary.
FEMA FIRM 2009
5 Areas in blue are within 100 year flood
boundary.
Many properties now within flood
boundary.
FEMA FIRM 2018
6 Approximately 1000 properties shown in
purple are added to the 100 year flood
boundary.
Properties North of Estudillo Canal are
predicted to receive water from two
locations: Estudillo Canal and the
shoreline near Marina/Neptune Drive.
Both areas must be addressed before
properties can be reclassified.
Estudillo canal project (by ACFCD) on hold
until funding is identified.
Neptune Drive project (by City) on hold
until Estudillo canal project is moving
forward.
Steps required to
reduce flood risk • Prepare improvement plans • Obtain FEMA approval • Build improvements • File an application for revision to the FIRM
7 Questions?