Horsefly Regional Emergency Spillway Project

The Municipal District of Taber is proposing the expansion of an existing emergency spillway to divert overland floodwaters and stormwater runoff within the St. Mary River Irrigation District to the Oldman River. The project would be located mostly on private lands near Taber, Alberta. The expansion would increase the diversion capacity of the existing spillway from approximately 7.6 m3/s to 40 m3/s.


This map is for illustrative purposes. The markers represent the approximate locations based on available data. More than one marker may be identified for a given assessment.


Latest update

December 23, 2021 — The Impact Assessment Agency of Canada has suspended the timeline for the impact assessment at the request of the proponent.


December 17, 2021 — The Impact Assessment Agency of Canada issued the Summary of Issues to the proponent on December 8, 2021 for the preparation of the Detailed Project Description and Response to the Summary of Issues.


December 12, 2021 — The participant funding application period is closed. The Impact Assessment Agency of Canada is reviewing the funding applications.


Key documents

Key documents
Document Number Document Title File Date
18 Summary of Issues PDF (600 KB) December 8, 2021
3 Summary of an Initial Project Description of a Designated Project PDF (5.3 MB) November 5, 2021

List all records


Horsefly Regional Emergency Spillway Project
Impact Assessment Agency of Canada
Canada Place
9700 Jasper Avenue, Suite 1145
Edmonton, Alberta T5J 4C3

  • Location

    • Taber (Alberta)
  • Nature of Activity

    • Dams and reservoirs
  • Assessment Status

    In progress
  • Start Date

  • Proponent

    Municipality of Taber
  • Authorities

    • Impact Assessment Agency of Canada
  • Assessment Type

    Planning Phase for Impact Assessment
  • Reference Number


Nearby assessments

..within 200 kilometres
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