The storms brought by atmospheric river patterns have created enough rainfall to declare Clearlake as being officially “full”. TheLakeCountyNews reports the lake is considered full at 7.56 feet Rumsey, a special measurement for the lake. The lake reached that measurement late Monday evening. By 9 am on Tuesday, the lake stood at 7.9 feet Rumsey. The lake would reach flood stage at 9 feet, Last year, it took the lake until March 14 to reach full level and topped out at 8.38 feet Rumsey on March 21 before receding.