Southern California Edison routinely inspects all of its dams for safety. At Saddlebag Lake, some leakage happens through existing naturally occurring cracks in the bedrock under the dam. In the fall of 2017, an increase in leakage was observed. SCE Dam and Public Safety engineers determined the increase was caused by cracks in the bedrock that previously were sealed. SCE will use pressurized grout to reseal the cracks. The integrity and safety of the dam has not been affected.
https://sierranewsonline.com/repairs-to-start-on-saddlebag-lake-leaks/