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Observation sites are distributed
throughout our area of responsibility. Most of these individuals are
volunteers, although some receive a very small stipend. These reports are
quality controlled by us, and then sent to the RFC. The hydrologists on duty
at the RFC use these reports, gather additional river gage data, and from it
make river stage forecasts at larger, predetermined locations. They also
issue flash flood guidance (how much rain would have to fall in a given time
interval for flooding to occur on a county-by-county basis). The hydrologists
are available 16 hours/day to provide guidance as needed; however, any
statements and warnings are the responsibility of the local forecast office.
(Left: River gage at
Paw Paw, WV)
The AWIPS workstation has software for hydrology
surveillance and automated product preparation. Included in this software is
the ability to view river gage data, dial up precipitation gages, view flash
flood guidance, and integrate this information with records and station
histories to prepare statements. For instance, some of the details included
could compare the river stage forecast to a previous flood event, or detail
what this stage may inundate. An example of the main display screen can be
seen below. Each triangle represents a river gage in our Hydrologic Service
Area (HSA). The stations in green report levels below flood stage. The
triangle turns yellow when action stage is reached; the station is not yet in
flood, but is threatening. When a station exceeds flood stage, the triangle
turns red.

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