| geosmin and mib events in a new reservoir in southern california. | diamond valley lake is a large drinking water reservoir in western riverside county, california near the city of hemet. in almost 6 years since filling began in 1999, this reservoir has experienced five episodes involving either geosmin or 2-methylisoborneol (mib). the first one was a short-lived but intense geosmin event in may 2000, associated with a planktonic cyanobacterium, anabaena circinalis. geosmin levels reached 750 ng/l at the surface. all the other episodes involved benthic prolifera ... | 2007 | 17489388 |