Keep the kids reading this summer. There are lots of programs listed here. If you know of one not listed here, please put it in the comments section!
San Francisco Summer Library
Sign up and log your reading here. Kids up to age 12 get a prize for every 10 hours they read, and can enter a raffle. Teens ages 13-18 get prizes for every 30 hours they read, plus raffle tickets for great prizes. Even adults can register. Adults who read 40 hours get a free book or museum pass to the deYoung. Raffle prizes for all include museum memberships and a $500 gift card to Chronicle Books.
The SF Library has reading lists here, organized by ethnicity (Chinese, Spanish, Russian etc.), nature, arts/music/recreation, neighborhood, etc.
Marin County Summer Library Reading Program
Each week you read for at least three hours, you get a prize, including a free pizza, crayons, silly straw and lunch tote. Program runs June 9-August 10. See a children's librarian in the Marin County library system to sign up.
Santa Clara County Summer Reading Program
The Santa Clara County summer reading program runs June 1 - August 31. You'll win prizes for reading. Teens and adults who read five books can enter a drawing to win a Nexus Google Tablet or iPad mini. You need to register online to be eligible.
Alameda County Summer Reading Program
From June 10 to August 10, the Alameda County Summer program includes all ages, even adults, with the theme Have Book - Will Travel. Use a game board they provide to track your reading time, and you can win books and other prizes, plus raffle tickets.
Contra Costa County Summer Reading Festival
Pick up a reading record starting June 8 at your local Contra Costa county library branch. Libraries like the Martinez branch have special festivities and give prizes for the first people to come in to sign up. Babies to adults welcome to join the festival.
Scholastic Summer Challenge
Scholastic has the Summer Challenge, where your child can win prizes, enter sweepstakes and help break the world reading record. They don't actually say what the awards are in the press release (nor on the home page of the summer challenge), so I can't help you there. The website has book ideas, summer reading tips and activity suggestions for parents to help their children read. Log in your reading minutes here and register. The school that logs the most minutes gets a visit from Captain Underpants author Dav Pilkey. Looks like some schools are already on the ball, so if you want to register your school, you better do it quickly to get those minutes piling up!
Barnes & Noble
Read 8 books (you don't need to purchase them from B&N), and write about it in your reading journal. Bring that to Barnes & Noble and you'll earn a free book. Sign up here. At that link they also share staff picks based on the grade level.