Map of San Diego's 2,000-foot-radius "predator-free zones"

There needs to be a detailed map of all city, couty and state parks. Also the city and county should provide these to Sex Offenders (S.O.s), along with a list and where the updates are of the official daycare centers. As all S.O.s have to live wiht these restrictions there is no proper way for them to locate and stay 300ft. away. The Thomas guide is not accurate anough when the GPS monitors are accurate to within 50ft. Mapquest has been suggested but thios is still not accurate and many S.O.s are not allowed access to the net. The city and county must make these maps more accurare and give the property outlines to map makers like Mapquest and the Thomas Guides!