Predicting the Impact of Drainage Ditches upon Hydrology and Sediment Loads Using KINEROS 2 Model: A Case Study in Ontario

• Published in: Canadian biosystems engineering 2018-01, Vol.60, p.1.1
• Main Authors: Gupta, Anand K, Rudra, Ramesh P, Gharabaghi, Bahram, Daggupati, Prasad, Goel, Pradeep K, Shukla, Rituraj
• Format: Article
• Language: eng ; fre
• Subjects: Calibration; Case studies; Design storms; Ditches; Drainage; Drainage ditches; Hydrologic models; Hydrology; Impact analysis; Impact prediction; Predictions; Roads; Runoff; Sediment yield; Sediments; Stream discharge; Stream flow; Vegetation; Water; Watersheds
• ISSN: 1492-9058; 1492-9066

Hydrologic models are calibrated and validated with an existing drainage network/drainage pattern (DNDP). However, in present times water could be routed through alternative DNDPs. The main objective of thispaper was to explore the performance of KINEROS 2 model in predicting streamflow and sediment yield in response to alterations in DNDP. Adopting the existing DNDP as an input, the model was calibrated for three events (18 April 2013, 12 June 2012, and 12 June 2013) and validated for two events (12 April 2014, and 30 August 2013) for flow at the watershed outlet. Further, the model was calibrated for eight events and validated for seven events for sediment content at the watershed outlet. Thereafter, the model was driven with a modified DNDP, and its response upon peak flow, direct runoff and sediment yield were investigated for two events (12 April 2014 and 18 April 2013) and a synthetic design storm (2-year-24 hour) at a sub-basin outlet (GUL_RSD). Three DNDPs: DNDP_M (road-side ditches with the same Manning’s n), DNDP_MV (road-side ditches lined with medium vegetation), and DNDP_HV (road-side ditches lined with thick vegetation) were considered. KINEROS 2 results revealed that peak flow, direct runoff, and sediment yield increased by 47.36 %, 31.39 %, and 26.96 % respectively for 12 April 2014 event for DNDP_M. Similar results were obtained for 18 April 2013 and synthetic design storm events. However, when road-side ditches were lined with a thicker vegetation (DNDP_MV and DNDP_HV), a reduction in peak flow, direct runoff, and sediment yield was observed.