| 000 | 04708nas a2200481 a 4500 | ||
|---|---|---|---|
| 005 | 20260818172120.0 | ||
| 008 | 200903s2019 th m rtt 000 a eng d | ||
| 035 | _a.b12313725 | ||
| 099 | 9 | _aAIT Thesis no.WM-19-08 | |
| 100 | 1 | _aK. C., Saurav | |
| 245 | 1 | 0 | _aPluvial flood hazard assessment and management under urbanization and climate change scenarios in Kathmandu Metropolitan city, Nepal |
| 260 |
_aPathum Thani, Thailand : _bAsian Institute of Technology, _c2019 |
||
| 300 |
_a132 leaves : _bill. (some col.) + _e1 online resource |
||
| 490 | 1 |
_aThesis; _vno. WM-19-08 |
|
| 500 | _aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Water Engineering and Management | ||
| 502 | _aThesis (M.Eng.) - Asian Institute of Technology, 2019 | ||
| 520 | _aUrbanization and climate change collectively impose threats for pluvial flooding in cities. The transformation of natural landcover toward imperviousness and the changes in local climatic condition, increases flood frequencies in rapidly growing metropolitans like Kathmandu. This study emphases to assess the impact of urbanization and climate change in pluvial flooding of Kathmandu Metropolitan City (KMC), Nepal. The study used observed rainfall data, three individual RCMs namely ACCESS 1, CNRM and MPI and one ENSEMBLE RCM (average) to analyze the historical and future rainfall trend and extreme analysis. The overall results showed that KMC is likely to have more intense rainfall events with shorter durations in the future. Moreover, the performance of ensembled RCM after linear bias correction shows an underestimation for extreme events as compared to individual RCMs. The study deals with the individual and combined impact of urbanization and climate change using PCSWMM Professional 2D model and the results show that, KMC is likely to have increase in flood volume, extent, depth and velocity. CNRM (2 and 20-year return period) under RCP 4.5 projects the maximum flooding in future. The increase in flood volume for current and extreme imperviousness under different climate change scenarios is likely to be more than 60% exceeding up to 90% as compared to the baseline conditions. For a 2-year return period, KMC is likely to increase in flooding extent with average maximum depth 0.10-0.25 m (low- medium hazard depths). Similarly, the flooding velocity is likely to increase in the areas with a depth greater than 0.25-0.4 m (and higher). In case of the 20-year return period, KMC is likely to have more increase in flooding areas having depth between 0.25-0.4m followed by areas with depth more than O.4m. The four major cause of frequent pluvial flooding in KMC are increased impervious cover, unplanned settlement, clogging of sewers and undersized design of sewers. The study analyzed that reducing the surface runoff through infiltration and introducing overflow storages can reduce flood by 20-35%. Furthermore, there is a great need for exploring location-based effective adaptation and/or management options to reduce the frequent pluvial flood in KMC. | ||
| 650 | 0 |
_aFlood control _zNepal _zKathmandu |
|
| 650 | 0 |
_aUrbanization _zNepal _zKathmandu |
|
| 650 | 0 |
_aClimatic changes _zNepal _zKathmandu |
|
| 700 | 1 |
_aShrestha, Sangam, _eChairperson |
|
| 700 | 0 |
_aTawatchai Tingsanchali, _eExamination committee |
|
| 700 | 0 |
_aSarawut Ninsawat, _eExamination committee |
|
| 700 | 0 |
_aSomchai Chonwattana, _eExamination committee (External Expert) |
|
| 710 | 2 |
_aAIT Fellowship, _eScholarship Donor |
|
| 810 | 2 |
_aAsian Institute of Technology. _tThesis; _vno. WM-19-08 |
|
| 856 |
_3Full-Text _uhttp://203.159.5.9/ait-thesis/detail.php?q=B05739 |
||
| 907 |
_a.b12313725 _bmnait _cm |
||
| 902 | _a240422 | ||
| 998 |
_b0 _c200903 _dm _ea _fm _g0 |
||
| 945 | _lmnait | ||
| 945 | _lmnait | ||
| 945 | _lmnarc | ||
| 945 | _lmnarc | ||
| 942 | _c40 | ||
| 942 | _c61 | ||
| 942 | _c20 | ||
| 909 |
_aBarcode : 30050120878359 _bCREATED : 2019-06-18 _cRECORD # : i13193922 _dLPATRON : 0 _eLCHKIN : - _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 0 _iTOT CHKOUT : 0 _jTOT RENEW : 0 |
||
| 909 |
_aBarcode : - _bCREATED : 2019-06-18 _cRECORD # : i13193934 _dLPATRON : 0 _eLCHKIN : - _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 0 _iTOT CHKOUT : 0 _jTOT RENEW : 0 |
||
| 909 |
_aBarcode : 30050120979777 _bCREATED : 2020-03-09 _cRECORD # : i13293035 _dLPATRON : 0 _eLCHKIN : - _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 1 _iTOT CHKOUT : 0 _jTOT RENEW : 0 |
||
| 909 |
_aBarcode : 30050120979769 _bCREATED : 2020-03-09 _cRECORD # : i13293047 _dLPATRON : 1031171 _eLCHKIN : 2022-06-15 _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 0 _iTOT CHKOUT : 3 _jTOT RENEW : 2 |
||
| 999 |
_c88817 _d88817 |
||