| Height Above FS | Total Occurence | Percent of Crest Occurrence | Cumulative Total Flood Occurrence | Percent of Floods above Listed Value |
| 9 ft to 10 ft | 10 | 50.0 | 9 ft or above 20 | 100.0 |
| 10 ft to 11 ft | 1 | 5.0 | 10 ft or above 10 | 50.0 |
| 11 ft to 12 ft | 3 | 15.0 | 11 ft or above 9 | 45.0 |
| 12 ft to 13 ft | 3 | 15.0 | 12 ft or above 6 | 30.0 |
| 13 ft to 14 ft | 1 | 5.0 | 13 ft or above 3 | 15.0 |
| 14 ft to 15 ft | 1 | 5.0 | 14 ft or above 2 | 10.0 |
| 15 ft to 16 ft | 0 | 0.0 | 15 ft or above 1 | 5.0 |
| 16 ft to 17 ft | 1 | 5.0 | 16 ft or above 1 | 5.0 |
| Height Above FS | Total Occurence | Percent of Crest Occurrence | Cumulative Total Flood Occurrence | Percent of Floods above Listed Value |
| 9 ft to 10 ft | 9 | 47.4 | 9 ft or above 19 | 100.0 |
| 10 ft to 11 ft | 1 | 5.3 | 10 ft or above 10 | 52.6 |
| 11 ft to 12 ft | 3 | 15.8 | 11 ft or above 9 | 47.4 |
| 12 ft to 13 ft | 3 | 15.8 | 12 ft or above 6 | 31.6 |
| 13 ft to 14 ft | 1 | 5.3 | 13 ft or above 3 | 15.8 |
| 14 ft to 15 ft | 1 | 5.3 | 14 ft or above 2 | 10.5 |
| 15 ft to 16 ft | 0 | 0.0 | 15 ft or above 1 | 5.3 |
| 16 ft to 17 ft | 1 | 5.3 | 16 ft or above 1 | 5.3 |
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Codes and description
C1|Crest information looks unreliable and incomplete and not used in frequency calculations. Some of the floods are based on current flood stage and nearby gage information.
C2|Crest information looks reliable despite potential problems. This data was used in frequency calculations.
C3|Crest height estimated by the USGS.
C4|Crest height is from the National Weather Service.
C5|Crest height affected by backwater.
C6|Crest occurred at a previous flood stage that is lower than the current flood stage. The crests below the new flood stage are not used in flood frequency calculations.
C7|Crest from USGS yearly peak and/or date is different than the crest we provide. In many cases MARFC uses crest based on backwater or ice effects.
C8|Crest month or day of occurrence has been estimated by The Middle Atlantic River Forecast Center usually based on nearby gage information.
C9|Crest date (day) in the month is unknown.
F1|Flow is an estimate.
F2|Flow affected by regulation or diversion and in some cases to an unknown degree.
F3|Flow effected by snow-melt, ice jam or debris jam break up.
F4|Flow affected by dam failure.
F5|Flow - All or part of the record affected by urbanization, mining, agricultural changes, channelization or other factors.
G1|Gage height at a different site and/or datum.
G2|Gage is not an official USGS gage with crests provided by the NWS. Crest information looks unreliable and incomplete and not used in flood frequency calculations.
G3|Gage datum changed during this year.
none,No code; Good Data
Updated: 08:09 AM Feb 08, 2013