A Research Paper on Hydrology
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Added on 2020-04-13
A Research Paper on Hydrology
Added on 2020-04-13
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Hydrology 1HYDROLOGY ASSIGNMENTA Research Paper on Hydrology ByStudent’s NameName of the ProfessorInstitutional AffiliationCity/StateYear/Month/Day
Hydrology 2PROBLEM 1After many years if flooding Columbian University new campus, the NYC planners have decided it is time to construct a unit hydrograph that represent the rate of discharge at the newcampus per 1cm of runoff over the Hudson River. The data below shows the flow at the new campus generated by runoff produced by the Hudson River Basin (A = 50km2) for a storm last year. a.Hydrograph of the above storm0510152025303540450102030405060708090Hydrograph
Hydrology 3b.Total volume of overland produced by the storm above the assuming a base flow of 14.16m3/sSum of VDEH at 3 hours interval = (14.16 + 33.98 + 63.71 + 82.68 + 75.61 + 58.55 + 40.49 + 31.15 + 25.77 + 22.09 + 19.26 +16.99+15.29+14.16)Sm of VDEH at 3 hours interval = 528.33Volume of runoff = 528.33*3*60*60 = 5704236m3c.What is the depth of runoff for this storm?Runoff depth = VDEH/A basin = 5704236/(50*1000000) = 0.114m = 11.4cmd.Construct and plot a Unit Hydrograph for the Hudson River basin. The unit hydrographs = flow /runoff depth = 14.16/11.4 = 1.242m3/sec/cmSimilarly to others:Time(h)Flow (m3/se)UH (M3/sec/cm)014.161.242333.982.981663.715.589982.687.2521275.616.6321558.555.1361840.493.5522131.152.7322425.772.2612722.091.9383019.291.6923316.991.4903615.291.3413914.441.2674214.161.242
Hydrology 4051015202530354045012345678Now using the amount of runoff calculated from problem 2, and assuming an instantaneous pulse of rainfall at 6am on both days:e.Plot the hydrograph for Saturday’s stormsFrom the values of problem 2 below:Runoff coefficient with 5% saturation = 3.33*108And runoff coefficient with 90% saturation = 0.0000006Plot the hydrograph for Sunday’s storm:The intensity is 30mm/hour = 3cm/hrTime(h)Flow (m3/se)UH (M3/sec/cm)DRH for 6 hours014.161.2423.726333.982.9818.964663.715.58916.767982.687.25221.7561275.616.63219.8961558.555.13615.4081840.493.55210.656
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