A far-reaching measure before California voters in June would authorize the state to borrow $4.1 billion for investments in outdoor recreation, land conservation and water projects. But Proposition 68, which needs a simple majority vote to pass, is not your typical water and parks bond measure. The proposition steers clear of flashy, big-ticket items like new dams and major state park expansions. Instead, it favors upgrading smaller neighborhood parks, protecting local greenways and open space and cleaning up polluted riverbanks and groundwater supplies, largely in urban and suburban areas.