The mythical Barkley family of The Big Valley - an ABC TV series that ran from 1965 to 1969 - would recognize much of the terrain of their beloved eastern San Joaquin County.Wide open spaces with gently rolling land as it nears the foothills is still much the norm today. Unfortunately the Barkeys - depicted as Stockton’s most powerful and rich family 140 years ago - probably wouldn’t flinch at the amount of violence and crime in their beloved county seat.But what they would be astounded at is how detached the Board of Supervisors can be about what the Barkley clan knew was one of the most, if not the most, critical county asset - water.More than 70 percent of the fresh water used in California passes through the San Joaquin Delta of which almost all is encompassed within county boundaries.Every plan advanced to address the Golden State’s thirst for water that involves the Delta would drastically alter the way of life - and farming - in San Joaquin County. Farming is by far the No.