| Flood Impacts |
| 29.0 | WATER OVERTOPS THE WIRE WEIGHT GAGE ON OLD HIGHWAY 20. WATER IS OVER A FOOT DEEP ATOP THE BRIDGE |
| 28.0 | WATER OVERTOPS THE BRIDGE ON OLD HIGHWAY 20 |
| 27.5 | WATER REACHES THE BOTTOM OF THE GAGE HOUSE |
| 25.0 | RECORD STAGE. OBSERVED ON MARCH 16, 1973 |
| 20.0 | WATER IS APPROACHING HOMES SOUTH OF DOWNTOWN COURTLAND...WITH SEVERAL STREETS IMPASSIBLE. WATER REACHES THE UNDERSIDE OF THE BRIDGE AT OLD HIGHWAY 20 IN COURTLAND |
| 16.0 | WATER BEGINS TO COVER ROADS SOUTH OF DOWNTOWN COURTLAND |
| 14.0 | LOWLAND FLOODING BEGINS ON THE LEFT BANK OF THE RIVER |
| 12.0 | THE RIVER OVERFLOWS ON COUNTY ROAD 150 ABOUT THREE QUARTERS OF A MILE UPSTREAM OF THE GAGE SITE...SOUTH OF COURTLAND |
