| Height Above FS | Total Occurence | Percent of Crest Occurrence | Cumulative Total Flood Occurrence | Percent of Floods above Listed Value |
| 20 ft to 21 ft | 18 | 21.7 | 20 ft or above 83 | 100.0 |
| 21 ft to 22 ft | 18 | 21.7 | 21 ft or above 65 | 78.3 |
| 22 ft to 23 ft | 7 | 8.4 | 22 ft or above 47 | 56.6 |
| 23 ft to 24 ft | 7 | 8.4 | 23 ft or above 40 | 48.2 |
| 24 ft to 25 ft | 9 | 10.8 | 24 ft or above 33 | 39.8 |
| 25 ft to 26 ft | 4 | 4.8 | 25 ft or above 24 | 28.9 |
| 26 ft to 27 ft | 4 | 4.8 | 26 ft or above 20 | 24.1 |
| 27 ft to 28 ft | 7 | 8.4 | 27 ft or above 16 | 19.3 |
| 28 ft to 29 ft | 3 | 3.6 | 28 ft or above 9 | 10.8 |
| 29 ft to 30 ft | 1 | 1.2 | 29 ft or above 6 | 7.2 |
| 30 ft to 31 ft | 1 | 1.2 | 30 ft or above 5 | 6.0 |
| 31 ft to 32 ft | 0 | 0.0 | 31 ft or above 4 | 4.8 |
| 32 ft to 33 ft | 2 | 2.4 | 32 ft or above 4 | 4.8 |
| 33 ft to 34 ft | 1 | 1.2 | 33 ft or above 2 | 2.4 |
| 34 ft to 35 ft | 0 | 0.0 | 34 ft or above 1 | 1.2 |
| 35 ft to 36 ft | 0 | 0.0 | 35 ft or above 1 | 1.2 |
| 36 ft to 37 ft | 0 | 0.0 | 36 ft or above 1 | 1.2 |
| 37 ft to 38 ft | 1 | 1.2 | 37 ft or above 1 | 1.2 |
| Height Above FS | Total Occurence | Percent of Crest Occurrence | Cumulative Total Flood Occurrence | Percent of Floods above Listed Value |
| 20 ft to 21 ft | 15 | 22.1 | 20 ft or above 68 | 100.0 |
| 21 ft to 22 ft | 18 | 26.5 | 21 ft or above 53 | 77.9 |
| 22 ft to 23 ft | 5 | 7.4 | 22 ft or above 35 | 51.5 |
| 23 ft to 24 ft | 4 | 5.9 | 23 ft or above 30 | 44.1 |
| 24 ft to 25 ft | 7 | 10.3 | 24 ft or above 26 | 38.2 |
| 25 ft to 26 ft | 3 | 4.4 | 25 ft or above 19 | 27.9 |
| 26 ft to 27 ft | 3 | 4.4 | 26 ft or above 16 | 23.5 |
| 27 ft to 28 ft | 6 | 8.8 | 27 ft or above 13 | 19.1 |
| 28 ft to 29 ft | 3 | 4.4 | 28 ft or above 7 | 10.3 |
| 29 ft to 30 ft | 1 | 1.5 | 29 ft or above 4 | 5.9 |
| 30 ft to 31 ft | 0 | 0.0 | 30 ft or above 3 | 4.4 |
| 31 ft to 32 ft | 0 | 0.0 | 31 ft or above 3 | 4.4 |
| 32 ft to 33 ft | 1 | 1.5 | 32 ft or above 3 | 4.4 |
| 33 ft to 34 ft | 1 | 1.5 | 33 ft or above 2 | 2.9 |
| 34 ft to 35 ft | 0 | 0.0 | 34 ft or above 1 | 1.5 |
| 35 ft to 36 ft | 0 | 0.0 | 35 ft or above 1 | 1.5 |
| 36 ft to 37 ft | 0 | 0.0 | 36 ft or above 1 | 1.5 |
| 37 ft to 38 ft | 1 | 1.5 | 37 ft or above 1 | 1.5 |
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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