UNION VALLEY is located in CA at coordinates 38.8640°N, 120.4380°W. Water level data is provided by California DWR / CDEC. The latest reading is 4844.10 ft.
A small badge a marina, lake association or guide can paste on their site. It always includes a link back to UNION VALLEY on LakeLevels — that is the entire point.
Recommended — places a real link on the host page.