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Upstream soffitt <br />Upstream invert <br />End of upstream apron <br />Top centerline of downstream headwall <br />Downstream invert <br />End of downstream apron <br />rs * r> * ^9‘*o.hj <br />942.46 <br />942.61 <br />949.55 <br />941.95 <br />941.93 <br />"At 72" CMP thru R.R. grade" <br />Top upstream end (on bent lip) <br />Upstream flowline <br />Upstream invert <br />Stain on upstream end of culvert <br />Top downstream end of culvert <br />Downstream flowline <br />Downstream invert <br />944.82 <br />939.1 <br />938.80 <br />941.1 <br />944.18 <br />938.5 <br />938.28 <br />We also obtained the following elevations on the staff gage on the left upstream <br />winowall of the old Hwy. 12 culvert: Too of gage 945.53 <br />Toe = 2.06 <br />0^^ cf gage 943.47 <br />During our OHW investigation we boated the entire shoreline of the lake and <br />obtained the ground elevation at 8 trees (maple, ash, elm & oak). Based on the <br />average reduced elevation of the 6 best trees, the OHW of Long Lk. would be <br />944.3. One of these trees, a 2.2' elm stump was 1<l0+ years old. <br />recorded a recent beachline at 944.3 and distinct stains on the upstream <br />wingwall of the outlet culvert at 944.1 and 945.3. <br />. ■att. 11 m