| PEAK-FLOW CODES
Discharge Codes | |
|---|---|
| 1 | discharge is a maximum daily average |
| 2 | discharge is an estimate |
| 3 | discharge affected by dam failure |
| 4 | discharge less than indicated value, which is minimum recordable discharge at this site* |
| 5 | discharge affected to unknown degree by regulation or diversion** |
| 6 | discharge affected by regulation or diversion** |
| 7 | discharge is an historic peak*** |
| 8 | discharge actually greater than indicated value |
| 9 | discharge due to snowmelt, hurricane or debris dam breakup |
| A | year of occurrence is unknown or not exact |
| B | month or day of occurrence is unknown or not exact |
| C | all or part of the record affected by urbanization, mining, agricultural changes, channelization, or others |
| D | base discharge changed during this year |
| E | only the annual maximum peak exceeded base discharge this year. |
| * | Code 4 cannot occur simultaneously with codes 1, 2, 3, 7, or 8. |
| ** | Codes 5 and 6 cannot occur simultaneously. |
| *** | Code 7 should indicate that the value for the particular year is an historic peak and the particular year occurred before or after the systematic record, or during a break in the systematic record. |
| Gage-Height Codes | |
|---|---|
| 1 | gage height affected by backwater |
| 2 | gage height not the maximum for the year* |
| 3 | gage height at different site and/or datum |
| 4 | gage height below minimum recordable elevation |
| 5 | gage height is an estimate |
| 6 | gage datum changed during this year |
| * | If code 2 is given here, then a date and data entries should be made for the maximum annual gage height. |
| Maximum Gage-Height Codes not Associated with Annual Peak Flow | |
|---|---|
| 1 | gage height affected by backwater |
| 3 | gage height at different site and/or datum |
| 5 | gage height is an estimate |
| 6 | gage datum changed during this year |
Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |