The Hayward shoreline will be the site Saturday of one of more than 500 satellite events taking place worldwide in association with the planned March for Science and Earth Day rally in Washington, D.C.

The sea level for San Francisco Bay is projected to rise more than 5 feet by the end of the century.

In addition, the area is expected to be prone to more frequent and longer-lasting storm flooding, inundation of tidal zones and shoreline erosion. Sewage treatment plants and industrial and residential areas near the bay also may be threatened.

The Hayward Shoreline March for Science is scheduled for 10:30 a.m. at the Hayward Shoreline Interpretive Center, 4901 Breakwater Ave., Hayward. It will follow a 1.5-mile course along the bay trail, with a group aerial photo at 11 a.m.

Those taking part are asked to register at www.eventbrite.com/e/march-the-hayward-shoreline-tickets-32877017043.

Hayward to mark Earth Day

Hayward will have a cleanup day Saturday to commemorate Earth Day.

Volunteers should meet at 8:30 a.m. Saturday at the Hayward Community Gardens, 25051 Whitman St. Those taking part are asked to provide their own gloves.

The Keep Hayward Clean and Green Task Force is sponsoring the cleanup.

For more information, go to www.hayward-ca.gov/khcg.

Forum to consider future of water in state

A Castro Valley luncheon forum will examine the future of water in California on April 28.

The forum will include Joan Buchanan, of Restore the Delta, and East Bay Municipal Utility District Director Frank Mellon.

Buchanan will talk about her organization’s opposition to the Delta twin tunnels water project, and Mellon will discuss the water district’s water situation and plans.

The forum will be 11:30 a.m. to 2 p.m. April 28 at the Castro Valley Adult School, Rooms 12 and 13, 4430 Alma Ave., Castro Valley.

To register, email lwvea@aol.com by April 24. A box lunch can be ordered for $10-$15. Checks should be made out and sent to: LWV Eden Area, Treasurer, Box 2234, Castro Valley, CA 94546.

The forum is sponsored by the League of Women Voters Eden Area, Asian Pacific Islander America Public Affairs East Bay Chapter, and Castro Valley Adult and Career Education.

Hayward area history awards Saturday

The Hayward Area Historical Society is having its 16th annual History Awards on Saturday.

The society will honor people and organizations making history and preserving culture in the Hayward area.

The reception will include drinks, appetizers, desserts and a silent auction.

The awards begin at 5 p.m. Saturday at the society’s Museum of History and Culture. Tickets are $100; proceeds help support the society’s programs. For more information, go to www.haywardareahistory.org.

Community identifier roundtables scheduled

Three roundtables are planned to discuss community identifier projects in Ashland/Cherryland, San Lorenzo and Castro Valley.

Murals will be painted at three freeway overpasses with the names of the communities and other design elements.

Artists making mural proposals will be at the roundtable meetings to hear residents’ thoughts about their communities and how they can be reflected in the artwork.

The first meeting will be at 6 p.m. Tuesday at the Castro Valley Library, 3600 Norbridge Ave. The next will be at 6 p.m. Wednesday at Ashland Place, 16385 E. 14th St., San Leandro.

The final meeting will be at 6 p.m. May 2 at the San Lorenzo Library, 395 Paseo Grande.

Residents can also share their ideas at http://tinyurl.com/ztqzvan.

Arab-American ensemble to perform

In celebration of Arab American Heritage Month, the Aswat Choral Ensemble will perform Saturday at the San Leandro Library.

Aswat is an ensemble of 20 singers and musicians who perform classical and folk Arabic music.

The free performance begins at 2 p.m. at the main library, 300 Estudillo Ave.

For more information, call 510-577-3971.

Youth program grant proposals sought

San Leandro is accepting grant proposals to support youth programs in the city.

The city has set aside $1,500 grants for groups or programs.

Applications are available online at www.sanleandro.org, at the Marina Community and at the Senior Community Center.

Applications will be accepted through Tuesday.