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Gaining and losing gages occurs frequently. Here is some guidance on dealing with losing sites and requests for a new forecast point.
Read NWSI 10-940 for an overview on changes to the hydrologic network.
Losing Gages
Decreases in the gaging network typically occur due to loss of funding. What can be done? Try to secure “sponsors” for the gages. The expense of siting and installing a gage has already been paid – try to find someone to pay the cost of maintenance.
Enlist the help of the RFC for information on why the gage is so important. For instance, the gage might provide input to water supply forecasts or support flood control operations.
New Forecast Points
New forecast points become necessary due to several changes, including changes in land use or increases to populations at risk near the river.
Example: During a visit to a gage location (currently a data point), you notice a sign advertising a new phase of a subdivision just outside the greenway on the High CFS River.
The subdivision was not included on a previous E-19, but you count 75 houses and estimate another 75 for the next phase.
Assuming an average of three occupants per house, this quickly adds up to a significant number of people at risk if the river floods.
Use the following job sheets to set stations inactive or requesting forecast service.
Reference: HPM Job Sheets