Stormwater quiz TR-55 with complete
solutions
SCS ii- iiAnswers ii-Soil iiConservation iiService. iiPromoted iicontrol iiand iiprevention iiof
iisoil iierosion: iiissued iiTR-55
Was iiTR-55 iimethod iidesigned iito iidescribe iiflows iiin iidrainage iiareas iiwith iia iisignificant
iiportion iiof iiflow iiwithin iistormwater iisewers? ii- iiAnswers ii-No, iiTR-55 iiis iibased iion
iiopen iiand iiunconfined iiflow iiover iiland iior iiin iichannels
Identify iithe iivariables iiin iiSCS iirunoff iiequation ii- iiAnswers ii-Q ii(runoff), iiP ii(rainfall),
iiS(potential iimax iiretention iiafter iirunoff iibegins) iiand iiIa ii(initial iiabstraction)
What iiare iithe iiunits iifor iiQ iiin iithe iiSCS iirunoff iiequation ii- iiAnswers ii-in
What iifactors iiaffect iithe iicurve iinumber ii- iiAnswers ii-Hydrologic iisoil iigroup ii(HSG),
iiCover iitype, iitreatment, iihydrologic iicondition, iiantecedent iirunoff iicondition ii(ARC),
iiconnectivity iiof iiareas
What iidoes ii'treatment' iimean iiwith iirespect iito iithe iiCN ii- iiAnswers ii-A iicover iitype
iimodifier iito iidescribe iithe iimanagement iiof iicultivated iiagricultural iilands
Does iirunoff iiincrease iior iidecrease iias iiCN iiincreases ii- iiAnswers ii-increase
What iiis iithe iikey iicharacteristic iiused iito iicategorize iisoils iiinto iiHSG ii- iiAnswers ii-
minimum iiinfiltration iirate
What iiassumptions iiabout iithe iiconnectivity iiof iiimperviousness iiare iiused iito iidevelop
iiCN iivalues ii- iiAnswers ii-Assume iithey iiare iidirectly iiconnected iito iithe iidrainage iisystem
What iikey iifactors iiaffect iithe iitime iiof iiconcentration ii(time iifor iirunoff iito iitravel iifrom iithe
iihydraulically iimost iidistant iipoint iiof iithe iiwatershed iito iia iipoint iiof iiinterest)? ii- iiAnswers
ii-Surface iiroughness, iichannel iishape iiand iiflow iipatterns, iislope
Identify iithe iivariables iiin iiMannings iisolution iifor iioverland iiflow iitime ii- iiAnswers ii-Tt=
iitravel iitime, iin= iimannings iiroughness iicoefficient, iiL=flow iilength, iiP2 ii= ii2 iiyear ii24hr
iirainfall, iis=slope iiof iihydraulic iigrade iiline
When iido iiyou iiuse iigraphical iipeak iidischarge iimethod iiversus iitabular iihydrograph
iimethod ii- iiAnswers ii-you iiuse iigraphical iipeak iiwhen iisubareas iiand iihydrograph iiare
iinot iirequired, iiyou iimust iiuse iithe iitabular iimethod iiif iieither iiare iinecessary
solutions
SCS ii- iiAnswers ii-Soil iiConservation iiService. iiPromoted iicontrol iiand iiprevention iiof
iisoil iierosion: iiissued iiTR-55
Was iiTR-55 iimethod iidesigned iito iidescribe iiflows iiin iidrainage iiareas iiwith iia iisignificant
iiportion iiof iiflow iiwithin iistormwater iisewers? ii- iiAnswers ii-No, iiTR-55 iiis iibased iion
iiopen iiand iiunconfined iiflow iiover iiland iior iiin iichannels
Identify iithe iivariables iiin iiSCS iirunoff iiequation ii- iiAnswers ii-Q ii(runoff), iiP ii(rainfall),
iiS(potential iimax iiretention iiafter iirunoff iibegins) iiand iiIa ii(initial iiabstraction)
What iiare iithe iiunits iifor iiQ iiin iithe iiSCS iirunoff iiequation ii- iiAnswers ii-in
What iifactors iiaffect iithe iicurve iinumber ii- iiAnswers ii-Hydrologic iisoil iigroup ii(HSG),
iiCover iitype, iitreatment, iihydrologic iicondition, iiantecedent iirunoff iicondition ii(ARC),
iiconnectivity iiof iiareas
What iidoes ii'treatment' iimean iiwith iirespect iito iithe iiCN ii- iiAnswers ii-A iicover iitype
iimodifier iito iidescribe iithe iimanagement iiof iicultivated iiagricultural iilands
Does iirunoff iiincrease iior iidecrease iias iiCN iiincreases ii- iiAnswers ii-increase
What iiis iithe iikey iicharacteristic iiused iito iicategorize iisoils iiinto iiHSG ii- iiAnswers ii-
minimum iiinfiltration iirate
What iiassumptions iiabout iithe iiconnectivity iiof iiimperviousness iiare iiused iito iidevelop
iiCN iivalues ii- iiAnswers ii-Assume iithey iiare iidirectly iiconnected iito iithe iidrainage iisystem
What iikey iifactors iiaffect iithe iitime iiof iiconcentration ii(time iifor iirunoff iito iitravel iifrom iithe
iihydraulically iimost iidistant iipoint iiof iithe iiwatershed iito iia iipoint iiof iiinterest)? ii- iiAnswers
ii-Surface iiroughness, iichannel iishape iiand iiflow iipatterns, iislope
Identify iithe iivariables iiin iiMannings iisolution iifor iioverland iiflow iitime ii- iiAnswers ii-Tt=
iitravel iitime, iin= iimannings iiroughness iicoefficient, iiL=flow iilength, iiP2 ii= ii2 iiyear ii24hr
iirainfall, iis=slope iiof iihydraulic iigrade iiline
When iido iiyou iiuse iigraphical iipeak iidischarge iimethod iiversus iitabular iihydrograph
iimethod ii- iiAnswers ii-you iiuse iigraphical iipeak iiwhen iisubareas iiand iihydrograph iiare
iinot iirequired, iiyou iimust iiuse iithe iitabular iimethod iiif iieither iiare iinecessary
