Title:
1-500 yr Flood Mapping - North SK River, Prince Albert SK
Agreement Number:
the PSIMS agreement number: 20799
Agreement Value:
$60,000.00
Agreement Date:
May 22, 2019 - Mar 31, 2020
Description:
The general scope of this project is to complete a river hydraulics model to update the flood mapping for the City of Prince Albert. State of the art modeling and mapping techniques will be required to complete the study with a three phased approach being implemented: Phase 1-Data Acquisition and Review: - Review previous hydraulics and flood mapping reports and establish model domain area in order to identify data gaps to complete the modeling. - Conduct a hydrographic river survey to measure bathymetry profiles of the North Saskatchewan River and the Spruce River within the study area; and - Summarize available data regarding infrastructure (i.e. culverts, bridges, outfalls, storm water connectivity, etc.) Phase 2 - River Hydraulics Modeling: - Complete a statistical analysis of historical stream-flow data to estimate design flows for the 100-yr and 500-yr return periods for the North SK River and Spruce River. - Create geometric data for the hydraulic model of the study reach by including LiDAR and bathymetric data for the North SK River and Spruce River and set-up model parameters. - Calibrate-validate the model with observed/historic flood data and conduct a sensitivity analysis of critical parameters within the process Phase 3 - Flood Hazard Analysis and Reporting - Evaluate the two design flood events by using the hydraulics model and estimate water levels and velocity profiles of flood waters. - Apply and calibrate model for the design floods. - Identify the two flood hazard zones (floodway and flood fringe) and develop GIS based flood maps. - Identify possible mitigation measures to minimize the impact of design flood.
Organization:
Public Safety Canada
Expected Results:
There are 4 different neighborhoods and over 2000 properties that lie within the 1:500 yr flood plain in Prince Albert. Significant capital investment in projects such as berms, diking, etc. would be required to completely remove these properties from the flood plain. These projects would not be able to move forward without accurate data and flood modeling. - The new flood modelling will more accurately reflect the risk of flood events in the future based on updated data models. The additional data will be utilized for the development of infill neighbourhoods. New flood mapping will be used to update design standards for new neighbourhoods in Prince Albert and will incorporate risks of flooding due. Investment decisions for flood prone areas in build-out neighbourhoods will also consider better data.
Location:
Regina/ Régina, Saskatchewan, CA S4P 3T2
Reference Number:
214-2019-2020-Q1-0016
Agreement Type:
Contribution
Report Type:
Grants and Contributions
Recipient Business Number:
Not Applicable
Recipient Type:
Government
Recipient's Legal Name:
Province of Saskatchewan/ Province de Saskatchewan
Federal Riding Name:
Regina--Wascana (Saskatchewan)
Federal Riding Number:
47009
Program:
National Disaster Mitigation Program (NDMP)
Program Purpose:
The NDMP addresses rising flood risks and costs, and builds the foundation for informed mitigation investments that could reduce, or even negate, the effects of flood events. The NDMP fills a critical gap in Canada's ability to effectively mitigate, prepare for, respond to, and recover from, flood-related events by building a body of knowledge on flood risks in Canada, and investing in foundational flood mitigation activities.