State Sen. Sam Aanestad, R-Grass Valley, said he fears water rights in the Sierra could be jeopardized by a conservancy aimed at protecting the mountain range's resources, such as the South Yuba River, shown here off of North Bloomfield Road. State Sen. Sam Aanestad on Monday attacked the idea of a Sierra Nevada Conservancy, fearing it will infringe on property and water rights. Despite Gov. Arnold Schwarzenegger's endorsement of the plan, the Republican legislator last week voted against a compromised version of the bill, which would create an organization aimed at gathering grants and other funds to protect and improve...