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Preliminary Performance Mapping for Flooding Action 03
The preliminary performance maps shown here are examples captured from the "Maps in Action" section. The geographic information system (GIS) maps store information recorded by the Tillamook County Department of Community
Development on structures that have participated in the elevation program. PIVOT's interactive flooding
maps allow the user to select and view the success of specific elevated structure projects. Flooding
Maps in Action
provide a starting point for exploring with GIS the performance of CCMP Flooding Action 03 (Fld-03).
The image at right shows a view of flooding action
components discussed under "What are we doing?"
The FEMA-designated 100-year flood zone
is shown, as are homes that were elevated through the efforts of CCMP Flooding Action 03. It is helpful to see these actions in spatial relationship to the problems they address.
Since the Tillamook Bay Watershed CCMP is in the early
stages of implementation, the data are not complete. However, even with preliminary data, the signs of success are becoming apparent.
Mapped locations of raised homes are tied to information on
elevation date and flood damage in a geographic information system (GIS).
Damage reported from the devastating 100-year flood of 1996 (before structures were elevated) can be compared with
flood damage reports after elevation (Tillamook experienced 100-year floods in 1998 and 1999 as well). The table to
the right shows an example of this simple and readily available data tied to one mapped location. This type of information can
illustrate the success associated with individual structures. To view a photograph of an elevated structure, place your mouse over the word yes in the information table.
Assessing Performance in the Long-Term
The same type of spatial information expanded to neighborhoods, rather than individual houses,
could be used to measure the success of flood protection efforts throughout the community. Place your mouse over the larger, highlighted words in the list below to see additional data layers on the map at right.
Other data layers developed to help measure performance might include the following:
Mapped cow refuge pads and the damages avoided to dairy farms by their use could also be documented. These are examples of any number of additional data layers that could be developed for further performance analysis.
Tillamook County and the Tillamook Bay National Estuary Program maintain many GIS data
layers, and more are being developed all the time. Visit this county Web site for a list of county GIS data layers.
You can also view available data on-line.
Image and Data Credits
What's Next? Interactive performance maps
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