93' - Top of levee. Stages above this level result in flooding outside the levee. (datum = used)

87' - Flood stage.

80' - Simpson Lane becomes impassible. Dantoni Road floods. More orchards flood.

79' - Simpson Lane floods. Access into and out of Marysville via Simpson Lane bridge is cut off. Orchards within the levee system are flooded.

74' - Monitor stage.