Laserfiche WebLink
SECTIONTWO <br />Program Plan <br />CWCB believes that the most succinct description of technical standards for accuracy and <br />quality of floodplain delineation information is contained in a formal resolution adopted by the <br />Board of Directors of the Association of State Floodplain Managers (ASFPM) at its annual <br />conference in St. Louis, Missouri on May 12, 2003. The resolution in its entirety is included in <br />Appendix H of this report. The technical standards included within the resolution are listed <br />below: <br />"The fZood elevations and the fZoodplain delineations on the maps must correlate <br />reasonably to the best available topogr~aphic information for the stream and adjacent <br />corridor. <br />The planimetric features on the fZoodplain maps (streets and highways, stream <br />centerlines, bridges and other cirtical hydraulic features, corporate limits, section lines <br />and corners, survey benchmarks, etc.) must correlate reasonably to the best available <br />aerial photos or other suitable imagery for the stream and the adjacent corridor. <br />• The fZood hydrology used to develop the fZoodplain map must still reasonably refZect the <br />fZood hazard and meet pertinent local, regional, state and federal technical standards." <br />All Map Modernization projects in Colorado will be expected to meet these technical criteria. <br />The CWCB has identified 16 study tasks that could potentially be implemented in a countywide <br />map update. These tasks are listed in Table 2.1 below. More information on these tasks, <br />including definitions, "desired minimum standards", and cost estimating tools is included in <br />Appendix D. <br />Table 2.1 <br />Study Tasks for DFIRM Production <br />Task Descri tion Unit <br />A Pro' ect Sco in Pro' ect <br />B DFIRM Database Creation Panel <br />C Base ma u rade for Old S ecification DFIRM Panel <br />D DFIRM Conversion of Manual FIRM Panel <br />E Redelineation based on existin to o ra h Linear Mile <br />F Topographic Data Collection (LIDAR or Photogrametry) Square Mile <br />G To o ra hic Data Collection Surve Linear Mile <br />H A roximate Anal sis Limited Method and Redlineation Linear Mile <br />I Riverine Stud H drolo Linear Mile <br />J Riverine Stud H draulics - Detailed Method Linear Mile <br />K Riverine Stud Flood lain Delineation Linear Mile <br />L Detailed Stud for Uni ue Flood Hazards Linear Mile <br />M Inde endent QC of to o ra h S uare Mile <br />N Inde endent QC of h drolo & h draulics Linear Mile <br />O Inde endent QC of ma in Panel <br />P A eal resolution contin enc Percent of Total <br />Colorado Business Case Plan (Final Draft) 2-7 <br />