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r vv <br />«• • <br />I nroARTMFNiT 0(^ NA /t-C1 I^A:^ E SNNESOTA OEPARTMENT^t »^JI L' 'i'' '-^1 <br />DIVISION OF WATER -—==- , .) <br />111 <br />project ;— <br />AT /XlWCXJftX------Lona_y^ <br />Lone LrC. <br />!jl\: WGZlISQl trW— ~27-150 <br />Hennepin 87-115 <br />PURPOSE : SURVEY <br />nvestigation maintenance <br />type; levels <br />topography NOHW / OHW reconnaissance <br />I <br />I <br />hydrographic work report <br />Creek. <br />On 6/26/87 the survey crew J°g"|;ations at the^outlet. downstream to <br />investigation of the lake "i^^^|^°Sntrol fo^ the survey was from <br />the Burlington Northern R.R. 9rade. = 972.508, NGVD 1929. <br />use & GS B.M. "U 117" (located in NV.-SV, of Sec. tiev. <br />Following are the elevations we found at the outlet: <br />"At 6' X 8' concrete box culvert thru old Hwy. 12 <br />Water surface, Long Lk. <br />(no outflow) <br />P?esent“KroSr(Uw°po1nt on rocks across upstream <br />Lorpoirt^tTeMlns of possible old supporter <br />the alleged metal plate across upstre-m end <br />of culvert <br />Upstream invert of culvert <br />Upstream soffitt u^.A.:,n <br />(B.M.) Top centerline of upstream headwall <br />Centerline of old Hwy. 12 . . <br />Top centerline of downstream headwall <br />Downstream invert <br />Downstream flowline <br />Flowline at end of apron <br />End of apron <br />943.24 <br />943.48 <br />944.0 <br />943.9 <br />943.29 <br />949.21 <br />951.15 <br />952 .j <br />950.82 <br />942.89 <br />943.0 <br />942 <br />942.69 <br />"At 4' X 6' concrete box culvert thru new Hwy. 12" <br />Stain on upstream wingwall <br />Stain on upstream wingwall <br />Top centerline upstream headwall <br />7/13/87 <br />n * T E <br />John f-k/Senerek <br />943.9 <br />944.7 <br />950.08 <br />S » C N c 3 <br />Survey Cr0w <br />T I T w C <br />.MUbt