The above chart is courtesy of the National Weather Service.
The complete National Weather Service Gilboa Dam Site has further information.
The chart below shows the Schoharie Reservoir water level as height above sea level. Water starts spilling over the dam at 1124.5 feet and flood stage starts at 1130.5 feet. The theoretical break point of the dam prior to it's repair was judged by Department of Environmental Protection to be 1138 feet. The highest recorded water level was 1136 and one half feet in 1996.
The above chart is courtesy of the National Weather Service.
Flood Categories (in feet above sea level)
| Major Flood Stage: | 1133.5 | Severe flooding downstream of dam. |
| Moderate Flood Stage: | 1131.5 | Moderate flooding downstream of dam |
| Flood Stage: | 1130.5 | (With notch in place - Temporary flood elevation) The river is bankfull downstream |
| Action Stage: | 1124.5 | Water reaches temporary notch. |
Historical Crests
(1) 1136.60 ft on 1996/01/19
(2) 1136.26 ft on 1955/10/16
(3) 1135.69 ft on 1987/04/4
(4) 1135.25 ft on 2005/04/3
(5) 1134.78 ft on 1980/03/21