Del Valle Regional Park

Del Valle Regional Park is a part of the East Bay Regional Park District (EBRPD) in unincorporated Alameda County, California, 10miles south of the city of Livermore. The park covers 4,316 acres (~17.47 km2., ~6.74 sq. mi.).General descriptionThe park largely surrounds Lake Del Valle, an artificial reservoir made in 1968 by damming Arroyo Valle, a small river. The lake provides a source of recreation for visitors including swimming, fishing, and boating. There are lifeguards present at designated swimming areas. The park also offers 28 miles (~45.1 km) of hiking, horseback, and bicycle trails, in addition to 150 camping sites. It is the eastern gate for the Ohlone Wilderness Trail.The park can be approached from Mines or Arroyo Road, where the parking meter is often broken.Damage from flooding in 2017Del Valle Regional Park suffered widespread damage from the unusually heavy rains that struck the East Bay in early 2017. Much of the damage was around Lake Del Valle, where runoff overflowed five times into beaches, campgrounds and picnic areas. Some of the trails were washed out and needed to be rebuilt. The park was closed for nearly three months, before reopening on April 15, 2017. EBRPD estimated the cost to repair this park alone at $1.8 billion, and said the cost would rise further if the rains continued.