35.2' - High operational limit of gage
31.6' - Flood of record. Hurricane Agnes June 22, 1972.
29' - Major flood stage. Water begins to enter residence near the gage house.
27' - Water reaches top of the outside staff gage on USGS well house.
25' - Moderate flood stage. Water reaches base of deck at nearby home.
23' - Significant flooding throughout Dan River valley.
22' - Portions of Dan Valley Road and and Water Street in Mayodan are affected by high water.
19.5' - Dan Valley Road and River Road in Madison are closed by floodwaters.
19' - Minor flood stage. Flooding of lowlands and one or two roads.
0.8' - Low operational limit of gage