Title
Staff Report for a City of San Leandro City Council Resolution to Approve and Authorize the City Manager to Execute a Grant of Easement with the Alameda County Flood Control and Water Conservation District for Storm Drainage (Grants an easement over City property for storm drainage)
Staffreport
SUMMARY AND RECOMMENDATIONS
Alameda County Flood Control and Water Conservation District requests an easement over a portion of the City's Dredge Material Management Site for construction, maintenance, and storm water purposes that will benefit the City of San Leandro.
Staff recommends authorizing execution of a grant of easement.
BACKGROUND
Flood Insurance Rate Maps adopted by the Federal Emergency Management Agency (FEMA) in 2018 indicate that when a significant rain event coincides with a very high tide, there is a risk that water in the Estudillo Canal will not flow to San Francisco Bay and will instead flow over the northern bank of the canal and enter the neighborhood to the north. The Alameda County Flood Control and Water Conservation District (District) owns and operates the Estudillo Canal and has engineered a solution to reduce the risk of flooding from this canal. The District plans to store excess water in the City's Dredge Material Management Site (DMMS) until the tide recedes rather than allowing stormwater to otherwise spill out of the canal in an uncontrolled manner and into the adjacent Marina Faire and Mulford Gardens neighborhoods. The District requests an easement over a 5,550 square foot area of the DMMS for construction of interlocking pavers to protect against erosion, for maintenance of the same, and for rights to divert storm water into the DMMS.
The DMMS is located between the Heron Bay Marshland and the Estudillo Canal and is protected from high tide by an existing levee. The site was formerly used to store material dredged from the San Leandro Marina while it dried. Dredging and the storage of dredged material has been disco...
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