Next Article in Journal
Comparison of a Floating Cylinder with Solid and Water Ballast
Previous Article in Journal
Streamflow variability over the Period of 1990–2014 in Mahaweli River basin, Sri Lanka and Its Possible Mechanisms
Open AccessArticle

“Garbage in, Garbage Out” Does Not Hold True for Indigenous Community Flood Extent Modeling in the Prairie Pothole Region

1
School of Environment and Sustainability, University of Saskatchewan, Saskatoon, SK S7N 5A2, Canada
2
Department of Geography and Planning, University of Saskatchewan, Saskatoon, SK S7N 5C8, Canada
3
Special Projects, Mistawasis Nêhiyawak, Leask, SK S0J 1M0, Canada
4
Lands & Resources Department, Mistawasis Nêhiyawak, Leask, SK S0J 1M0, Canada
*
Author to whom correspondence should be addressed.
Water 2019, 11(12), 2486; https://doi.org/10.3390/w11122486
Received: 30 September 2019 / Revised: 20 November 2019 / Accepted: 22 November 2019 / Published: 25 November 2019
(This article belongs to the Section Water Resources Management and Governance)
Extensive land use changes and uncertainties arising from climate change in recent years have contributed to increased flood magnitudes in the Canadian Prairies and threatened the vulnerabilities of many small and indigenous communities. There is, thus, a need to create modernized flood risk management tools to support small and rural communities’ preparations for future extreme events. In this study, we developed spatial flood information for an indigenous community in Central Saskatchewan using LiDAR based DEM and a spatial modeling tool, the wetland DEM ponding model (WDPM). A crucial element of flood mapping in this study was community engagement in data collection, scenario description for WDPM, and flood map validation. Community feedback was also used to evaluate the utility of the modelled flood outputs. The results showed the accuracy of WDPM outputs could be improved not only with the quality of DEM but also with additional community-held information on contributing areas (watershed information). Based on community feedback, this accessible, spatially-focused modeling approach can provide relevant information for community spatial planning and developing risk management strategies. Our study found community engagement to be valuable in flood modeling and mapping by: providing necessary data, validating input data through lived experiences, and providing alternate scenarios to be used in future work. This research demonstrates the suitability and utility of LiDAR and WDPM complemented by community participation for improving flood mapping in the Prairie Pothole Region (PPR). The approach used in the study also serves as an important guide for applying transdisciplinary tools and methods for establishing good practice in research and helping build resilient communities in the Prairies.
Keywords: flood risk; flood mapping; LiDAR; spatial modeling; GIS; Prairie Pothole Region; community flood management flood risk; flood mapping; LiDAR; spatial modeling; GIS; Prairie Pothole Region; community flood management
MDPI and ACS Style

Thapa, A.; Bradford, L.; Strickert, G.; Yu, X.; Johnston, A.; Watson-Daniels, K. “Garbage in, Garbage Out” Does Not Hold True for Indigenous Community Flood Extent Modeling in the Prairie Pothole Region. Water 2019, 11, 2486.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop