Automation of DEM Cutting for Hydrologic/Hydraulic Modeling

dc.contributor.author Gelder, Brian
dc.contributor.department Institute for Transportation
dc.date 2018-02-15T20:57:52.000
dc.date.accessioned 2020-06-30T04:50:03Z
dc.date.available 2020-06-30T04:50:03Z
dc.date.embargo 2015-02-27
dc.date.issued 2015-02-01
dc.description.abstract <p>Hydrologic analysis is a critical part of transportation design because it helps ensure that hydraulic structures are able to accommodate the flow regimes they are likely to see. This analysis is currently conducted using computer simulations of water flow patterns, and continuing developments in elevation survey techniques result in higher and higher resolution surveys. Current survey techniques now resolve many natural and anthropogenic features that were not practical to map and, thus, require new methods for dealing with depressions and flow discontinuities. A method for depressional analysis is proposed that uses the fact that most anthropogenically constructed embankments are roughly more symmetrical with greater slopes than natural depressions. An enforcement method for draining depressions is then analyzed on those depressions that should be drained. This procedure has been evaluated on a small watershed in central Iowa, Walnut Creek of the South Skunk River, HUC12 # 070801050901, and was found to accurately identify 88 of 92 drained depressions and place enforcements within two pixels, although the method often tries to drain prairie pothole depressions that are bisected by anthropogenic features.</p>
dc.format.mimetype PDF
dc.identifier archive/lib.dr.iastate.edu/intrans_reports/103/
dc.identifier.articleid 1103
dc.identifier.contextkey 6743685
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath intrans_reports/103
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/44726
dc.language.iso english
dc.relation.ispartofseries IHRB TR-631; InTrans Project 11-397
dc.source.bitstream archive/lib.dr.iastate.edu/intrans_reports/103/IADOT_InTrans_Automation_DEM_Cutting_Hydrologic_Hydraulic_Modeling_2015.pdf|||Fri Jan 14 18:18:03 UTC 2022
dc.subject.disciplines Civil Engineering
dc.subject.keywords Drainage
dc.subject.keywords Flood hydrographs
dc.subject.keywords Flood plains
dc.subject.keywords Hydraulics
dc.subject.keywords Hydrology
dc.subject.keywords Watersheds
dc.subject.keywords Des Moines River
dc.subject.keywords Mississippi River
dc.subject.keywords Missouri River
dc.subject.keywords depressional analysis
dc.subject.keywords digital elevation model
dc.subject.keywords drainage
dc.subject.keywords hydrologic analysis
dc.subject.keywords hydrologic enforcement
dc.subject.keywords LiDAR
dc.subject.keywords watershed characterization
dc.title Automation of DEM Cutting for Hydrologic/Hydraulic Modeling
dc.type article
dc.type.genre report
dspace.entity.type Publication
relation.isOrgUnitOfPublication 0cffd73a-b46d-4816-85f3-0f6ab7d2beb8
File
Original bundle
Now showing 1 - 1 of 1
Name:
IADOT_InTrans_Automation_DEM_Cutting_Hydrologic_Hydraulic_Modeling_2015.pdf
Size:
1.42 MB
Format:
Adobe Portable Document Format
Description:
Collections