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Characterizing Extreme Precipitation in the Upper Midwest United States for Urban Watershed Management and Adaptation
Characterizing Extreme Precipitation in the Upper Midwest United States for Urban Watershe...
Characterizing Extreme Precipitation in the Upper Midwest United States for Urban Watershed Management and Adaptation

Detailed Information

자료유형  
 학위논문 서양
최종처리일시  
20260202105258
ISBN  
9798263319793
DDC  
551
저자명  
Gallagher, Noah Donald.
서명/저자  
Characterizing Extreme Precipitation in the Upper Midwest United States for Urban Watershed Management and Adaptation
발행사항  
[Sl] : University of Minnesota, 2025
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2025
형태사항  
97 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-05, Section: B.
주기사항  
Advisor: Gulliver, John S.;Erickson, Andrew J.
학위논문주기  
Thesis (Ph.D.)--University of Minnesota, 2025.
초록/해제  
요약Urban watersheds, where the natural soils are often replaced with impervious cover during development, face flooding risks from extreme precipitation events. Such watersheds typically experience changes in their hydrologic properties with greater regularity than they observe the largest and most dangerous events, like the 100-year storm. As a result, watershed managers and stormwater engineers must address the risk from extreme precipitation under uncertainty. This dissertation focuses on three aspects of extreme precipitation relevant to designing infrastructure for risk reduction: (1) the extent to which extreme precipitation events are increasing in frequency; (2) the classification of adaptation strategies that most effectively mitigate flood impacts; and (3) the representation of rainfall distributions within extreme events.This research shows that extreme precipitation is increasing in frequency for the Upper Midwest United States, with weather stations 30\\% more likely to report the largest event on record in 2024 compared to the average between 1900 and 2024. Two inflection points in extreme precipitation dynamics were identified, with the most recent inflection occurring in 1970, when air temperatures also began to increase over the continental United States. The best strategy to reduce flood risk at a watershed level was found to be achieved by adding storage volume to the stormwater infrastructure network. Specifically, installing new stormwater ponds reduced both average water depth and peak outlet flow rate when compared to baseline conditions, which when combined with continuous monitoring and adaptive control technology provided the greatest benefit. This research also proposes a new method for quantifying intra-event rainfall intensity which can be used to generate rainfall distributions with specified intensity exceedance probabilities. These new distributions were simulated and compared to real storms recorded in Minnesota. The frequency with which real storms exceeded the runoff volume and runoff rate generated by a new curves was shown to reproduce the desired exceedance probability across several soil types.
일반주제명  
Hydrologic sciences
일반주제명  
Climate change
일반주제명  
Water resources management
키워드  
Extreme precipitation
키워드  
Flooding
키워드  
Hyetograph
키워드  
Urban hydrology
기타저자  
University of Minnesota Civil Engineering
기본자료저록  
Dissertations Abstracts International. 87-05B.
전자적 위치 및 접속  
로그인 후 원문을 볼 수 있습니다.

MARC

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■035    ▼a(MiAaPQ)AAI32279844
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a551
■1001  ▼aGallagher,  Noah  Donald.
■24510▼aCharacterizing  Extreme  Precipitation  in  the  Upper  Midwest  United  States  for  Urban  Watershed  Management  and  Adaptation
■260    ▼a[Sl]▼bUniversity  of  Minnesota▼c2025
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2025
■300    ▼a97  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-05,  Section:  B.
■500    ▼aAdvisor:  Gulliver,  John  S.;Erickson,  Andrew  J.
■5021  ▼aThesis  (Ph.D.)--University  of  Minnesota,  2025.
■520    ▼aUrban  watersheds,  where  the  natural  soils  are  often  replaced  with  impervious  cover  during  development,  face  flooding  risks  from  extreme  precipitation  events.  Such  watersheds  typically  experience  changes  in  their  hydrologic  properties  with  greater  regularity  than  they  observe  the  largest  and  most  dangerous  events,  like  the  100-year  storm.  As  a  result,  watershed  managers  and  stormwater  engineers  must  address  the  risk  from  extreme  precipitation  under  uncertainty.  This  dissertation  focuses  on  three  aspects  of  extreme  precipitation  relevant  to  designing  infrastructure  for  risk  reduction:  (1)  the  extent  to  which  extreme  precipitation  events  are  increasing  in  frequency;  (2)  the  classification  of  adaptation  strategies  that  most  effectively  mitigate  flood  impacts;  and  (3)  the  representation  of  rainfall  distributions  within  extreme  events.This  research  shows  that  extreme  precipitation  is  increasing  in  frequency  for  the  Upper  Midwest  United  States,  with  weather  stations  30\\%  more  likely  to  report  the  largest  event  on  record  in  2024  compared  to  the  average  between  1900  and  2024.  Two  inflection  points  in  extreme  precipitation  dynamics  were  identified,  with  the  most  recent  inflection  occurring  in  1970,  when  air  temperatures  also  began  to  increase  over  the  continental  United  States.  The  best  strategy  to  reduce  flood  risk  at  a  watershed  level  was  found  to  be  achieved  by  adding  storage  volume  to  the  stormwater  infrastructure  network.  Specifically,  installing  new  stormwater  ponds  reduced  both  average  water  depth  and  peak  outlet  flow  rate  when  compared  to  baseline  conditions,  which  when  combined  with  continuous  monitoring  and  adaptive  control  technology  provided  the  greatest  benefit.  This  research  also  proposes  a  new  method  for  quantifying  intra-event  rainfall  intensity  which  can  be  used  to  generate  rainfall  distributions  with  specified  intensity  exceedance  probabilities.  These  new  distributions  were  simulated  and  compared  to  real  storms  recorded  in  Minnesota.  The  frequency  with  which  real  storms  exceeded  the  runoff  volume  and  runoff  rate  generated  by  a  new  curves  was  shown  to  reproduce  the  desired  exceedance  probability  across  several  soil  types.
■590    ▼aSchool  code:  0130.
■650  4▼aHydrologic  sciences
■650  4▼aClimate  change
■650  4▼aWater  resources  management
■653    ▼aExtreme  precipitation
■653    ▼aFlooding
■653    ▼aHyetograph
■653    ▼aUrban  hydrology
■690    ▼a0595
■690    ▼a0388
■690    ▼a0404
■71020▼aUniversity  of  Minnesota▼bCivil  Engineering.
■7730  ▼tDissertations  Abstracts  International▼g87-05B.
■790    ▼a0130
■791    ▼aPh.D.
■792    ▼a2025
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360061▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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