Probable Maximum Precipitation and Precipitation Frequency Analyses for the Lower Nelson River, Manitoba.
Project Scope
PMP depths across the 90,000-square kilometer basin for both the summer/fall and spring seasons were developed for all projects within the Manitoba Hydro portfolio. This included a larger region which is affected by significant snowmelt runoff and northerly latitudes and variable climate conditions. In addition, flows into this large basin are affected by the large body of water from Lake Winnipeg.
The new PMP estimates are available from a single grid point to the entire region and are provided via out GIS tool and database. This allows any combination of PMP scenarios to be evaluated. This provides the required outputs for proper hydrologic modelling over this complex system, including rain on snow events as the area transitions from spring snowmelt to rainfall runoff situations.
