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<br />Mapping Plan for Colorado <br /> <br />2.0 Overview of CWCB Analysis <br /> <br />The CWCB analysis of Colorado's floodplain mapping needs was based on two data gathering efforts: <br /> <br />1) Gathering specific information about the floodplain mapping needs and capabilities of as <br />many of Colorado's 332 communities as possible; and <br />2) Gathering and developing numeric data about each of Colorado's 64 counties, including <br />numeric data about each of the Colorado's 332 communities, to rank the floodplain mapping <br />needs of each county is the state. <br /> <br />CWCB staff and the MMIP consultants, Moser Engineering and PBS&J, developed two forms to gather <br />data about Colorado communities. One form was a survey questionnaire, asking a series of standard <br />questions about each community's map update needs. The other form was a worksheet, asking for <br />specific data regarding the stream reaches within the community and the specific update or new study <br />needs for those stream reaches. Blank copies of these forms were mailed to each of these Colorado's <br />communities. Copies of the mapping needs worksheet and questionnaire are provided in Appendix A-I. <br />In addition, workshops were held in four locations in Colorado to provide direct assistance to attendees in <br />filling out the forms. <br /> <br />The response to the mailings and workshops was as follows: <br /> <br />. 143 of332 communities responded by filling out at least one of the forms and/or by attending a <br />workshop; <br />. 34 of 64 counties responded; <br />. 109 of 268 municipalities responded; <br />. 141 questionnaires were filled out and entered into the database; <br />. 130 worksheets were filled out and entered into the database; and <br />. 83 communities sent officials to attend workshops. <br /> <br />All responses to the questionnaire and the worksheet questions have been entered into a statewide <br />database. A summary of data collected from Colorado Communities is provided in Appendix A-2. This <br />database will be expanded through follow-up efforts by CWCB staff with non-responding communities <br />after the submittal to FEMA of this plan. Using unit costs developed by FEMA, in conjunction with cost <br />data from Colorado floodplain mapping projects, the MMIP consultants estimated the cost of meeting <br />community mapping needs and then aggregated those estimated costs for each of the 64 counties. The <br />estimated total cost of meeting Colorado's identified floodplain mapping needs is $36 million. <br /> <br />While overall needs and the costs of meeting those needs were being researched, a parallel effort was <br />underway to prioritize the needs of Colorado's 64 counties. The CWCB staff was fully aware of the <br />MNUSS methodology developed by FEMA and its MCC contractors. CWCB recognizes the significant <br />effort that went into developing MNUSS and the value of its ranking capabilities. The CWCB staff felt <br />that it was important to develop a prioritization methodology specific to Colorado and its particular <br />floodplain mapping needs. CWCB staff found that data entered into MNUSS for Colorado was not <br />complete and, therefore, did not provide a fully reliable tool for prioritization in our state. There is clearly <br />overlap between the data analyzed in the CWCB methodology and the data analyzed by MNUSS. Some <br />of the data in the CWCB methodology, however, is unique to Colorado. <br /> <br />12/26/2002 <br /> <br />Page 9 of 38 <br />