2026-09-21T20:52:20Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/86100 2023-07-11 col_2142_5131 col_2142_14847 com_2142_5130 com_2142_683 com_2142_397

Mitchell, J. Kent Yuan, Yongping 2015-09-28T14:53:57Z 2015-09-28T14:53:57Z 10000-01-01 2000 2000 Tile flow can be quantified using the altered SCS-CN method. Through theory analogy, a procedure similar to the traditional SCS-CN method was developed to estimate tile flow from rainfall. However, the relationship between initial abstractions and potential maximum retention was redefined. Curve number was obtained from observed rainfall and tile flow by assuming that initial abstractions were a portion of potential maximum retention. The curve number was sensitive to the ratio of initial abstractions/potential maximum retention. Additionally, curve number varied with rainfall amount, date and previous rainfall condition. Therefore, multiple regression was performed based on curve number and date, rainfall amount, and previous rainfall conditions. Regression results were used to obtain a curve number for each individual rainfall event. Flow was predicted based on the curve number obtained from regression. Comparisons were made between observed flow and predicted flow for five tile monitoring stations in Little Vermilion River watershed in east central Illinois. The method was successful in estimating tile flow regardless of whether the tile drain system is regular or irregular. Made available in DSpace on 2015-09-28T14:53:57Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 9955685.pdf: 12668580 bytes, checksum: c0772d44b0dd3b03156f7a81889a3f4e (MD5) Previous issue date: 2000 Embargo set by: Seth Robbins for item 87381 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs U of I Only 311 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2000. http://hdl.handle.net/2142/86100 (MiAaPQ)AAI9955685 eng Agriculture, Soil Science Tile -Drained Watershed Scs-Curve Number Model text Agricultural Engineering Agricultural Engineering University of Illinois at Urbana-Champaign Dissertation Ph.D.