| Height Above FS | Total Occurence | Percent of Crest Occurrence | Cumulative Total Flood Occurrence | Percent of Floods above Listed Value |
| 19 ft to 20 ft | 4 | 12.1 | 19 ft or above 33 | 100.0 |
| 20 ft to 21 ft | 7 | 21.2 | 20 ft or above 29 | 87.9 |
| 21 ft to 22 ft | 6 | 18.2 | 21 ft or above 22 | 66.7 |
| 22 ft to 23 ft | 4 | 12.1 | 22 ft or above 16 | 48.5 |
| 23 ft to 24 ft | 0 | 0.0 | 23 ft or above 12 | 36.4 |
| 24 ft to 25 ft | 0 | 0.0 | 24 ft or above 12 | 36.4 |
| 25 ft to 26 ft | 2 | 6.1 | 25 ft or above 12 | 36.4 |
| 26 ft to 27 ft | 1 | 3.0 | 26 ft or above 10 | 30.3 |
| 27 ft to 28 ft | 2 | 6.1 | 27 ft or above 9 | 27.3 |
| 28 ft to 29 ft | 2 | 6.1 | 28 ft or above 7 | 21.2 |
| 29 ft to 30 ft | 1 | 3.0 | 29 ft or above 5 | 15.2 |
| 30 ft to 31 ft | 1 | 3.0 | 30 ft or above 4 | 12.1 |
| 31 ft to 32 ft | 1 | 3.0 | 31 ft or above 3 | 9.1 |
| 32 ft to 33 ft | 0 | 0.0 | 32 ft or above 2 | 6.1 |
| 33 ft to 34 ft | 0 | 0.0 | 33 ft or above 2 | 6.1 |
| 34 ft to 35 ft | 2 | 6.1 | 34 ft or above 2 | 6.1 |
| Height Above FS | Total Occurence | Percent of Crest Occurrence | Cumulative Total Flood Occurrence | Percent of Floods above Listed Value |
| 19 ft to 20 ft | 0 | 0.0 | 19 ft or above 9 | 100.0 |
| 20 ft to 21 ft | 3 | 33.3 | 20 ft or above 9 | 100.0 |
| 21 ft to 22 ft | 2 | 22.2 | 21 ft or above 6 | 66.7 |
| 22 ft to 23 ft | 1 | 11.1 | 22 ft or above 4 | 44.4 |
| 23 ft to 24 ft | 0 | 0.0 | 23 ft or above 3 | 33.3 |
| 24 ft to 25 ft | 0 | 0.0 | 24 ft or above 3 | 33.3 |
| 25 ft to 26 ft | 0 | 0.0 | 25 ft or above 3 | 33.3 |
| 26 ft to 27 ft | 1 | 11.1 | 26 ft or above 3 | 33.3 |
| 27 ft to 28 ft | 2 | 22.2 | 27 ft or above 2 | 22.2 |
| 28 ft to 29 ft | 0 | 0.0 | 28 ft or above 0 | 0.0 |
| 29 ft to 30 ft | 0 | 0.0 | 29 ft or above 0 | 0.0 |
| 30 ft to 31 ft | 0 | 0.0 | 30 ft or above 0 | 0.0 |
| 31 ft to 32 ft | 0 | 0.0 | 31 ft or above 0 | 0.0 |
| 32 ft to 33 ft | 0 | 0.0 | 32 ft or above 0 | 0.0 |
| 33 ft to 34 ft | 0 | 0.0 | 33 ft or above 0 | 0.0 |
| 34 ft to 35 ft | 0 | 0.0 | 34 ft or above 0 | 0.0 |
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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