D.4 Documentation of Station Water Level
Accurate documentation of the record is extremely important. It establishes the identity of the location and the base values for future evaluation. It also ensures accurate transfer of the information from the field to the office.
It is easiest to evaluate a hydrometric record successfully when the supportive values and observations have been well documented. Each segment of the record must contain the necessary identification, support values and information. Documentation must be complete and legible. Always do the documentation immediately following the observations. Do not depend on memory; never wait for a more convenient time or location.
In most cases, specially-designed forms are provided to record the necessary information and observed readings systematically. Example RIC Forms are inserted in the text as they are introduced. Blank forms are included as Appendix II. Extra information can always be listed on these forms if it is necessary.
Sometimes information that appears to be insignificant or redundant must be recorded. All this information is gathered for various reasons: to route the original data in a different direction, to cross-reference the accuracy of the documentation, or to provide convenient access to the information on the original record. For example, if a question on one form arises, it can be resolved quickly by comparing that form with others containing a record of the same observations. If two segments of a record requiring the same support data become separated, each segment when properly documented, can be understood independent of the other.
Form AQU-06 Water Stage Recorder - Station Record for the Year ___ (Figure D-20) posted within the recorder shelter, provides a convenient record of observed data from all past visits to the station. The Remarks column shows the method used for past measurements and indicates a safe limit of stage for stream wading. Level checks of the gauges are noted, along with any necessary gauge correction. Update the form before leaving the site. The station log form, properly documented, provides a ready reference to the station operation history.
Make all field data entries on the meter note front sheet at the time of observation and. before leaving the site, complete the form properly. The time, gauge heights, and general information recorded on this form establish the baseline data.
Figure D-20. Example of completed RIC Form AQU-06, Water Stage Recorder -Station Record for the Year _____
