Flood Mitigation Program
Flood Mitigation Updates
The City will be hosting a second Flood Mitigation Program open house a=in City Park tomorrow, Tuesday, August 24, at 9:00 am. We’ve prepared a list of frequently asked questions from last Thursday’s open house.
Q: What is the width of the dike, both the top width and base
- Dikes will be 4m across the top in almost all locations. Depending on how low-lying the ground is, the footprint of the dikes will be 10-15m across. (30-45 ft)
- For example, a dike where the Flood Construction Level is 2m above ground would be 12m across the base (dike top of 4m + 2:1 slope x height). A dike on higher ground, with Flood Construction Level is only 1m above the ground, would be 8 m wide at the base (2m per side plus the 4 m top)
Q: What material will the dike be made out of
- Earth berm dikes are a mixture of sand, gravel, silt and clay according to engineered specifications. Layers or courses of these materials are laid down and compacted. If it is next to the river, the dike will have large rocks (rip-rap) and geotextile fabric to prevent erosion from the river.
- Some areas do not have room for earth berm dikes, so engineers have specified reinforced concrete or sheet pile flood walls. Concrete walls are specially engineered with deep, wide footings. Sheet pile walls are long sections of interlocking steel sheets that are driven by hydraulic pounding or vibration, then capped with concrete.
Q: When will these dikes begin construction.
- Depending on permitting, dike construction and other flood protection works such as stormwater mains will begin this winter.
The City of Grand Forks invites proposals to purchase and relocate over 30 houses and improvements acquired by the City for its Flood Mitigation Program. Houses must be viewed in a site visit on August 27th or September 3rd and must be removed by either November 15, 2021 or April 1st, 2022, depending on site. All information required by the proponent is their responsibility to obtain in the viewing days or after.
The Request for Proposal documents are available through BC Bid and on the City website, but the information package is available by request only. Proponents are solely responsible for ensuring any addenda are downloaded, reviewed, and included in their Proposal. Questions regarding specifications can be directed to Graham Watt, Manager of Strategic Initiatives/Flood Recovery or Justin Dinsdale, Manager of Capital Projects and Utilities by email at email@example.com or by telephone at 250-422-8266. Do not send proposals to this email address.
Proponents must refer to the RFP Documents for the terms governing the Proposal process. Proposals shall be prepared and submitted at the sole expense of the Proponent and without cost to the Corporation of the City of Grand Forks. All Proposals received by the City of Grand Forks Corporate Officer become the property of the Corporation of the City of Grand Forks and as such are subject to the Freedom of Information and Protection of Privacy Act.
Proposals may be submitted until 2:00:00 p.m. (local time), Monday, September 13th, to firstname.lastname@example.org. Only electronic submissions will be accepted.