Laserfiche WebLink
<br />flood hazard area map sheet numbers are illustrated on the Flood Hazard <br /> <br />Area Map Index. <br /> <br />TypIcal Valley Cross Sections <br /> <br />Flood Profiles <br /> <br />Cross-sections for each stream are designated alphabetically, starting <br /> <br />from the downstream end of each study reach. The following order has <br /> <br />been used: <br /> <br />Section A, B, . <br /> <br />. . <br /> <br />Y, Z, AA, AB, etc. <br /> <br />The designation <br /> <br />In addition to the 100- and SOO-year frequency floods, hydraulic studies <br /> <br />were made on the 10- and SO-year events. Information regarding these <br /> <br /> <br />smaller floods is especially useful for engineering design purposes <br /> <br />sequence is unique for each reach and is not carried over from one reach <br /> <br />to another. <br /> <br />related to roads, storm sewers, channels, and appurtenant structures. <br /> <br />Flood profiles for the various frequency floods are included In this <br /> <br />Exhibit B is a selection of typical valley cross-sections illustrating <br /> <br />report as Exhibit A. For information regarding _flood line elevations at <br /> <br />a specific location, the flood profile data can be used in' conjunction <br /> <br />the configuration of stream channels and adjoining flood plain areas. <br /> <br />Shown on the cross-sections are the elevations and lateral extent for <br /> <br />with the flood hazard area maps, The cross-section locations which <br /> <br />,the 100- and SOO-year flood events. <br /> <br />appear on both the profiles and maps can be used as reference points, <br /> <br />Flood hazard area sheet numbers, compatible with cross-section locations, <br /> <br />Flood Frequency-Elevation and Discharge Data <br /> <br />are shown on each flood profile exhibit. <br /> <br />Tables 1 through 6 include flood crest elevations and peak discharges <br /> <br />As a general guide for orientation purposes, the following designations <br /> <br />for 10-, SO-, 100-, and SOO-year floods. Tabulated information is <br /> <br />are assigned to stream names, flood hazard area maps, and cross-sections. <br /> <br />intended for use in conjunction with the water surface profiles and <br /> <br />flood hazard area maps. The information is compatible with reach <br /> <br />Stream Name <br /> <br />Flood Hazard Area <br />Map-Sheet Numbers Reaches Cross-Sections <br />1-3 1 A-Z <br />3-9 2 AA-CL <br />Supplemental 2 6 HA-HH <br />1-2 3 DA-ER <br />1-2 4 FA-FL <br />1 S GA-GD <br /> <br />numbers and cross-section deSignations. <br /> <br />San Juan River <br /> <br />FLOOD POTENTIAL - FUTURE CONDITIONS <br /> <br />McCabe Creek <br />West Fork Tri b. <br />North Fork Trib. <br /> <br />The effects of watershed land use changes anticipated by county planners <br /> <br />within the next 10 to 15 years were analyzed in relation to future flood <br /> <br />heights. Projected land use maps with expected developments were used <br /> <br />in the analysis. <br /> <br />- 17 - <br /> <br />- 18 - <br />