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-� - - . <br /> Contraction Reach 1 ��� -� <br /> Lc <br /> I. r,. <br /> Typical how transition,. / <br /> pattern / \ <br /> 1 . // \ <br /> / \ <br /> \ <br /> Le /4., Expansion Reach \ <br /> / \ <br /> / Lieakzed how transition \\ <br /> / lrnu m Gar I-dimensumnl ER \ <br /> / modeling <br /> I / - <br /> / 1 \ <br /> ; / \ <br /> 3. Using FHWA Hydraulic Design of Highway Culverts nomographs for both the circular and arch culverts, it appears <br /> apparent that the regression analysis produced Q100-year would overtop the crossing in both the existing and <br /> proposed conditions.This means that the road surface will dictate water surface elevations(step backwater <br /> calculations will take over) in a way more significant than culvert hydraulics. <br /> Please reach out with questions if you would like to discuss more. <br /> Thanks, <br /> We are committed to service excellence. <br /> Visit our survey at http://dnr.wi.gov/customersurvey to evaluate how I did. <br /> Jacob Druffner <br /> Water Management Engineer I Waterways Bureau/External Services Division <br /> Wisconsin Department of Natural Resources I Spooner,WI 54801 <br /> Phone:(715)461-0159 <br /> jacob.druffner@wisconsin.gov <br /> azdnr.wi.gov <br /> 2 <br />