The Delta reveals wonders to those willing to seek it, and the Big Break Visitor Center in Oakley is offering an exciting lineup of Delta Discovery programs every Saturday and Sunday in January and February. The activities are tailored especially to families, who will discover the hidden world of Big Break through games, activities and explorations. There is no charge for admission, and no registration is required.

Saturdays, 11 a.m. to noon

Jan. 19 – What is a Delta?

Jan. 26 – Avian Adventures

Feb. 2 – Wetland Story Time

Feb. 9 – Wetland Story Time

Feb. 16 – Watershed Wonders

Feb. 23 – Critter Clues: Tracks and Scat

Sundays, 2 to 3 p.m.

Jan. 20 – Delta Fish

Jan. 27 – Wetland Story Time

Feb. 3 – Delta Plants

Feb. 10 – Predators and Prey

Feb. 17 – Bird Adaptations

Feb. 24 – The Sensational Sun

Also on Saturdays and Sundays, from 9 to 10 a.m., Delta adventurers can participate in the citizen-science project Testing the Waters, which monitors the health of the Delta by tracking various parameters of the water quality of Big Break Regional Shoreline. The group will record the changes in such factors as dissolved oxygen, pH and turbidity that impact this vital ecosystem.

For more information, call the Big Break Visitor Center at the Delta, 69 Big Break Road in Oakley, at 510-544-3050.