Before the interference of industry, Arroyo Del Valle was an intermittent stream that dried up each summer. Some 20 years ago, Hanson and two other sand and gravel companies made an agreement with ...

At noon Sunday, the department began releasing 500 cubic feet per second flow of water from Lake Del Valle into Arroyo Valle. Flow increased up to 2,000 cubic feet per water by 4 p.m.

CAMPERS and day visitors to Del Valle Regional Park, south of Livermore, probably don’t realize the magnitude and history of this 3,400-acre park and lake. The reservoir’s 16 mile shoreline ...

U.S. physicians who have been skeptical about using PAS (para-aminosalicylic acid) to treat tuberculosis are being converted. Three doctors on the staff of the Arroyo Del Valle Sanatorium of ...

Livermore police asked Sunday afternoon that people stay away from the Arroyo Mocho creek and trail as the California Department of Water Resources is conducting a high flow release from the Del ...