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<br />1. Develop a flood emergency response plan that: integrates <br />the flood warning system information into the community flood <br />fight previously presented in Appendix F of the "Wiggins 0 & <br />M Manual, 1989". Suggestions are provided in Part 5. <br />2. Set up a maintenance plan. Suggestions are provided in <br />Part 6. . <br />3. Set up a rElgular flood drill schedule to test the system. <br />Include the volunteer observers in the testing plan. <br />4. Work out ell1 information sharing agreement with the Na- <br />tional Weather Service. See Part 5.2.2. <br /> <br />4.5 site Specific Construction Recommendations <br />A field investigation was made of the two flood warning <br />gage sites. ~~his section includes some observat:ions on how <br />the flood warning gages could be installed. <br />4.5.1 upstream Gage (Highway 52) <br />The best location for ei'ther a staff gage or an automated <br />flood warning gage is the riqht downstream wingwall at the <br />point that it joins 'the Eas.t bridge abutment. This location <br />provides the maximum range o:E stage, as well as protection <br />from floating debris. <br />It is unlikely tha.t the Highway Department will permit any <br />drilling in the! aging concretE~ 1rlingwal1. Therefore, it may <br />be necessary to install a piling adjacent to the wingwall, in <br />order to mount the qage. Th,~ top of the piling could be at- <br />tached to the top of the winqwall using brackets and clamps <br />without drilling. A stronge:r installation will be required <br />for an automated alarm gage than for a staff gage alone. <br />If a high stage staff gage is to be installed at this site, <br />it should be located on the same side of the bridge as the <br />low stage installation. For example, if an aui:omated flood <br />detection gage is built on th,~ downstream side of the Highway <br />52 bridge, them the high sta'"e staff gage should also be lo- <br />cated downstream of the bridg'~ in roughly the same hydraulic <br />cross section. Since there is no telephone pole nearby, in <br />that cross sect:ion, one may have t.o be installed. <br />4.5.2 Downstre!am Gage (County Road) <br />The automated flood detection qage could be attached to ei- <br />ther wing wall or the mid-span bridge pier. The right down- <br />stream wingwall may be the best of the 3 choices, as the <br />right downstream bank of Kimla Creek may be sub:iect to less <br />floating debr:.s than the middle or left bank at this loca- <br />tion. with thE! permission of the County Bridge Engineer, the <br />stilling well could be attached to the middle of the 3 I <br />beams supporting the right wingwall. If brackets could be <br />bolted through holes drilled in t,h.e flanges o:E t.he beam, <br />mounting will be relatively easy. The instrument shelter <br />should be locai:ed such that its lid is just below the top of <br />the guardrail. <br />There is a telephone pole, locat:ed near the right down- <br />stream bridge abutment, which could be used as a hi.gh stage <br />staff gage. Large sized numbers, demoting elevations tied to <br />gage datum, could be painted on the pole, so tha"t they could <br />be viewed at a distance. <br /> <br />17 <br />