{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/49398"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/49398","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Hydraulic modelling of Chicago Area Waterways System (CAWS) to assess the impact of hydrologic separation on water levels and potential flooding during extreme rainfall events in Chicago, Illinois","abstract":"An unsteady 1D hydraulic model (HEC—RAS) was implemented for the Chicago Area Waterways System (CAWS) for two configurations: i) current conditions, and i) physical separation with barriers. Hydrologic conditions were those for the 100-year storm event observed in September 2008. Combined Sewer Overflow hydrographs at +150 locations were estimated using the CityModel (InfoWorks). Historic conditions were defined by setting historic operation of gates and locks at controlling structures at Lakefront and Lockport. Also operation rules were set for required get open heights based on water levels at reference stations. Results show that the physical barriers and a new operation (lakefront structures permanently full-open) do have important consequences on the water levels in the CAWS. Control of water levels from Lockport would be lost on the lakeside of the barrier, and Lake Michigan would become a dominant factor on water levels. Although peak water levels would not necessarily increase in the presence of the barrier, water levels remain higher thereby increasing the chances that submerged outfalls would not be able to discharge stormwater, runoff, and CSOs into CAWS, and that flow back-ups would occur in sewers. Since the storage capacity of the CAWS on the lakeside of the barrier would be significatively reduced, reversals volumes to Lake Michigan would increase in the presence of the barrier.","abstract_html":"An unsteady 1D hydraulic model (HEC—RAS) was implemented for the Chicago Area Waterways System (CAWS) for two configurations: i) current conditions, and i) physical separation with barriers. Hydrologic conditions were those for the 100-year storm event observed in September 2008. Combined Sewer Overflow hydrographs at +150 locations were estimated using the CityModel (InfoWorks). Historic conditions were defined by setting historic operation of gates and locks at controlling structures at Lakefront and Lockport. Also operation rules were set for required get open heights based on water levels at reference stations. Results show that the physical barriers and a new operation (lakefront structures permanently full-open) do have important consequences on the water levels in the CAWS. Control of water levels from Lockport would be lost on the lakeside of the barrier, and Lake Michigan would become a dominant factor on water levels. Although peak water levels would not necessarily increase in the presence of the barrier, water levels remain higher thereby increasing the chances that submerged outfalls would not be able to discharge stormwater, runoff, and CSOs into CAWS, and that flow back-ups would occur in sewers. Since the storage capacity of the CAWS on the lakeside of the barrier would be significatively reduced, reversals volumes to Lake Michigan would increase in the presence of the barrier.","abstract_has_math":false,"creators":["Santacruz Salazar, Santiago"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Civil Engineering","degree_department":null,"school":null,"contributors":["Garcia, Marcelo H."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2014,"date_issued":"2014-05-30T16:42:03Z","date_published":"2014-05-30T16:42:03Z","updated_at":"2026-07-22T22:25:38Z","subjects":["Chicago River","Hydrologic Engineering Centers River Analysis System (HEC-RAS)"],"languages":["en"],"rights":["Copyright 2014 Santiago Santacruz"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/49398","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Garcia, Marcelo H."]},{"key":"dc:creator","label":"Author","values":["Santacruz Salazar, Santiago"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2014-05-30T16:42:03Z","2014-05"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Civil Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.S."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Chicago River","Hydrologic Engineering Centers River Analysis System (HEC-RAS)"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2014 Santiago Santacruz"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/49398"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["An unsteady 1D hydraulic model (HEC—RAS) was implemented for the Chicago Area Waterways System (CAWS) for two configurations: i) current conditions, and i) physical separation with barriers. Hydrologic conditions were those for the 100-year storm event observed in September 2008. Combined Sewer Overflow hydrographs at +150 locations were estimated using the CityModel (InfoWorks). Historic conditions were defined by setting historic operation of gates and locks at controlling structures at Lakefront and Lockport. Also operation rules were set for required get open heights based on water levels at reference stations. Results show that the physical barriers and a new operation (lakefront structures permanently full-open) do have important consequences on the water levels in the CAWS. Control of water levels from Lockport would be lost on the lakeside of the barrier, and Lake Michigan would become a dominant factor on water levels. Although peak water levels would not necessarily increase in the presence of the barrier, water levels remain higher thereby increasing the chances that submerged outfalls would not be able to discharge stormwater, runoff, and CSOs into CAWS, and that flow back-ups would occur in sewers. Since the storage capacity of the CAWS on the lakeside of the barrier would be significatively reduced, reversals volumes to Lake Michigan would increase in the presence of the barrier.","Item withdrawn by Laura Spradlin (lspradl2@illinois.edu) on 2013-12-13T21:51:02Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 1 Santacruz_Santiago.pdf: 1338615 bytes, checksum: a68977d3ae1834faf43234d08c3ce955 (MD5)","Made available in DSpace on 2014-05-30T16:42:03Z (GMT). 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Historic conditions were defined by setting historic operation of gates and locks at controlling structures at Lakefront and Lockport. Also operation rules were set for required get open heights based on water levels at reference stations. Results show that the physical barriers and a new operation (lakefront structures permanently full-open) do have important consequences on the water levels in the CAWS. Control of water levels from Lockport would be lost on the lakeside of the barrier, and Lake Michigan would become a dominant factor on water levels. Although peak water levels would not necessarily increase in the presence of the barrier, water levels remain higher thereby increasing the chances that submerged outfalls would not be able to discharge stormwater, runoff, and CSOs into CAWS, and that flow back-ups would occur in sewers. Since the storage capacity of the CAWS on the lakeside of the barrier would be significatively reduced, reversals volumes to Lake Michigan would increase in the presence of the barrier.","Item withdrawn by Laura Spradlin (lspradl2@illinois.edu) on 2013-12-13T21:51:02Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 1 Santacruz_Santiago.pdf: 1338615 bytes, checksum: a68977d3ae1834faf43234d08c3ce955 (MD5)","Made available in DSpace on 2014-05-30T16:42:03Z (GMT). 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