Prairie Hydrological Model Study Progress Report, December 2008
Date
2009
Authors
Pomeroy, John
Westbrook, Cherie
Fang, Xing
Brown, Tom
Minke, Adam
Guo, Xulin
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Centre for Hydrology, University Saskatchewan, Saskatoon, Saskatchewan
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Technical Report
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Abstract
This report is an update on progress made to the middle of December 2008, corresponding to “Milestone Month 20”. According to our study plan, at this milestone “we will have completed a wetland module and with evaluation on Smith Creek Research Basin and archival data available at the Centre for Hydrology (Objective 3, 4)”.
More specifically, Objectives 3 and 4 are stated as:
• Objective 3: A physically based, hydrological response unit-based hydrological model, (the Prairie Hydrological Model), will be developed that is suitable for multiple season simulation of the hydrology of the Canadian Prairie environment. The model will be capable of predicting water balance, soil moisture, snow cover, actual evaporation and streamflow on a daily time-step with minimal calibration of model parameters from streamflow records. The model will contain a wetland module that includes assigned variable drainage rates from the wetland. The intended basins would drain to a stream or internally drained lake/wetland, with basin size to be greater than ~1 km2 and less than ~250 km2.
• Objective 4: The Prairie Hydrological Model will be evaluated at Smith Creek through hydrological simulation and quantitative analysis of multi-objective criteria, including streamflow and wetland extent. Whilst calibration will be minimised and limited to non-physical aspects of the model, certain parameters will be optimised from these comparisons. For streamflow, both annual and peak flows are parameters of interest. For wetlands, seasonal extent is the parameter of interest.
Outlined below are the research activities regarding these two objectives, beginning with a description of the model created with the Cold Regions Hydrological Modelling Platform (CRHM), the CRHM-Prairie Hydrological Model, or CRHM-PHM, followed by a description of the addition of the wetland module, and concluding with preliminary results from CRHM-PHM evaluations at Smith Creek.
Description
© Centre for Hydrology, University of Saskatchewan, Saskatoon, Saskatchewan, December 2008
Keywords
Centre for Hydrology Report #4, Prairie Hydrological Model, wetland module, Smith Creek Research Basin, water balance, evaporation, snow cover, streamflow
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Centre for Hydrology Report #4